🏆 ยอดนิยม: anthropic claude timeline - ประเด็นร้อน

Claude is Anthropic’s family of AI assistants and large language models. The first public Claude release arrived on March 14, 2023, with Claude and Claude Instant available through a chatbot app and API.

The most recent Claude model launch is Claude Haiku 5.5, released on October 7, 2026. Anthropic’s current model comparison features Haiku 5.5, Sonnet 5.5, Opus 5.5, and Fable 5.1. Access to Claude Mythos 5.1 is limited to approved trusted-access programs.

This timeline prioritizes Claude versions and model release dates, then records the Claude products and ecosystem milestones that changed how people use Claude. These include Claude Code, Claude Duet, Claude Tag, Claude Design, Claude Docs, Claude Slides, Claude Dashboards, Claude Motion, Claude Science, Claude Security, Claude Cowork, Claude Academy, computer use, the Skills API, the Files API, Skills, the Model Context Protocol, connectors, desktop apps, and managed agents.

Last Updated: October 22, 2026

Claude Timeline Quick Facts

Question	Answer
When was Claude first released?	March 14, 2023
When was Claude 2 released?	July 11, 2023
When did the Claude 3 family launch?	March 4, 2024
When was Claude Code introduced?	February 24, 2025, as a research preview
What is the latest Claude model release?	Claude Haiku 5.5, released October 7, 2026
Which Claude models are in the current API lineup?	Claude Haiku 5.5, Claude Sonnet 5.5, Claude Opus 5.5, and Claude Fable 5.1
Which current Claude model has restricted access?	Claude Mythos 5.1

Claude Versions and Release Dates

Model or Product	Release Date	Key Highlight
Claude Haiku 5.5	October 7, 2026	Fast, low-cost model for high-volume tasks, with a 1M-token context window, up to 128K output tokens, adaptive thinking, and adjustable effort.
Claude Sonnet 5.5	September 28, 2026	Faster Sonnet model for everyday tasks, coding, and document work. It generates output more than 30% faster than Sonnet 5. Current API prices are $2 per million input tokens, $10 per million output tokens, and $0.10 per million cache reads.
Claude Opus 5.5	September 22, 2026	Anthropic’s most capable Opus model; matches Fable 5.1 on most work, has a 1M-token context window, and costs 40% less to run than Opus 5 on typical workloads. API prices are $4 per million input tokens, $20 per million output tokens, and $0.20 per million cache reads.
Claude Fable 5.1	September 1, 2026	Anthropic’s most capable generally available model for demanding reasoning, long-running agents, coding, research, and document work, with a 1M-token context window and 128K maximum output.
Claude Mythos 5.1	September 1, 2026	Restricted-access version of the same underlying model as Fable 5.1, available by invitation through Project Glasswing.
Claude Opus 5	July 24, 2026	Opus model for complex agentic coding and enterprise work, with a 1M-token context window, 128K maximum output, and adaptive thinking enabled by default.
Claude Sonnet 5	June 30, 2026	Sonnet model for agentic coding, tool use, reasoning, knowledge work, and lower-cost agent workflows.
Claude Fable 5	June 9, 2026	First generally available Mythos-class model for long-running agents, coding, knowledge work, vision, and research workflows.
Claude Mythos 5	June 9, 2026	Restricted-access version of the same underlying model as Fable 5, deployed through approved trusted-access programs.
Claude Opus 4.8	May 28, 2026	Opus upgrade for coding, agentic tasks, professional work, and more reliable long-running collaboration.
Claude Opus 4.7	April 16, 2026	Opus upgrade for advanced software engineering, complex multi-step tasks, high-resolution vision, and professional work.
Claude Sonnet 4.6	February 17, 2026	Sonnet upgrade for coding, computer use, long-context reasoning, agent planning, knowledge work, and design.
Claude Opus 4.6	February 5, 2026	Opus upgrade with stronger planning, code review, debugging, long-running agent reliability, and 1M context in beta.
Claude Opus 4.5	November 24, 2025	High-intelligence Opus model for coding, agents, computer use, spreadsheets, and long-running chats.
Claude Haiku 4.5	October 15, 2025	Fast, lower-cost model in the Claude 4.5 generation.
Claude Sonnet 4.5	September 29, 2025	Sonnet model for agents, coding, and computer use.
Claude Opus 4.1	August 5, 2025	Opus 4 upgrade for coding precision and agentic tasks.
Claude Opus 4 and Claude Sonnet 4	May 22, 2025	Claude 4 generation for coding, advanced reasoning, and AI agent workflows.
Claude Code	February 24, 2025	Agentic coding tool released as a research preview with Claude 3.7 Sonnet.
Claude 3.7 Sonnet	February 24, 2025	Hybrid reasoning model with standard and extended thinking modes.
Claude 3.5 Haiku	November 4, 2024 (announced October 22)	Faster, lower-cost model in the Claude 3.5 family.
Upgraded Claude 3.5 Sonnet	October 22, 2024	Improved Claude 3.5 Sonnet with stronger coding and computer use in public beta.
Claude 3.5 Sonnet	June 21, 2024	First Claude 3.5 model, with stronger reasoning, coding, visual understanding, and Artifacts.
Claude 3 Haiku	March 13, 2024	Fast Claude 3 model for lower-latency enterprise and API workloads.
Claude 3	March 4, 2024	Model family with Claude 3 Haiku, Claude 3 Sonnet, and Claude 3 Opus.
Claude 2.1	November 21, 2023	200K context window, lower hallucination rates, system prompts, and early tool use.
Claude Instant 1.2	August 9, 2023	Faster, lower-cost Claude Instant update with improvements across math, coding, reasoning, safety, and instruction following.
Claude 2	July 11, 2023	Improved performance, longer responses, API access, and a public beta web experience.
Claude 1	March 14, 2023	First public Claude assistant from Anthropic.

Current Claude Model Lineup

Claude Opus 5.5 is Anthropic’s most capable Opus model. It matches Claude Fable 5.1 on most work, has a 1M-token context window, and costs 40% less to run than Opus 5 on typical workloads. Its API list prices are $4 per million input tokens, $20 per million output tokens, and $0.20 per million cache reads.

Claude Fable 5.1 is Anthropic’s most capable generally available model for demanding reasoning, long-running agents, coding, research, and document, spreadsheet, and slide work. It uses a 1M-token context window, supports up to 128K output tokens, and keeps adaptive thinking on. It costs $10 per million input tokens and $50 per million output tokens, while cache reads cost $0.25 per million tokens.

Claude Opus 5 is also available for complex agentic coding and enterprise work, with a 1M-token context window, up to 128K output tokens, and adaptive thinking. Opus 5.5 is the newer Opus release.

Claude Sonnet 5.5 is Anthropic’s newest Sonnet model for everyday tasks, bug fixes, and document, slide, and spreadsheet work. It generates output more than 30% faster than Sonnet 5. Its API prices are $2 per million input tokens, $10 per million output tokens, and $0.10 per million cache reads.

Claude Sonnet 5 combines faster responses with strong coding, tool use, reasoning, and knowledge-work performance. It serves as the practical default for many agent and production workflows. Its $2 per million input tokens and $10 per million output tokens API pricing is now permanent.

Claude Haiku 5.5 handles high-volume tasks such as classification, extraction, summaries, and subagent work. It supports a 1M-token context window, up to 128K output tokens, and adaptive thinking with adjustable effort. For prompts up to 100,000 tokens, API prices are $0.10 per million input tokens, $0.50 per million output tokens, and $0.01 per million cache reads. For longer prompts, the rates are $0.50, $2.50, and $0.05, respectively. The previous Haiku release, Claude Haiku 4.5, is also available. Claude Mythos 5.1 uses the same underlying model as Fable 5.1. Access is restricted to approved trusted-access programs, including the expanded Cyber Verification Program.

For current API prices and model-by-model costs, see the Claude API pricing comparison.

Claude Model Status and Retirement Dates

Model	Status	Retirement or Replacement Note
Claude Haiku 5.5	Active	Latest Haiku release; not scheduled to retire before October 7, 2027
Claude Sonnet 5.5	Active	Latest Sonnet release in the active Claude model lineup
Claude Opus 5.5	Active	Latest Opus release in the active Claude model lineup
Claude Fable 5.1	Active	Latest generally available Mythos-class model; not scheduled to retire before September 1, 2027
Claude Mythos 5.1	Limited availability	Restricted access through approved trusted-access programs, including the expanded Cyber Verification Program
Claude Opus 5	Active	Previous Opus release
Claude Sonnet 5	Active	Previous Sonnet release
Claude Haiku 4.5	Active	Previous Haiku release
Claude Fable 5	Active	Previous generally available Mythos-class release
Claude Mythos 5	Limited availability	Previous restricted trusted-access release
Claude Opus 4.8	Active	Supported API model
Claude Opus 4.7	Active	Supported API model
Claude Opus 4.6	Active	Supported API model
Claude Sonnet 4.6	Active	Supported API model
Claude Opus 4.5	Active	Supported API model; not scheduled to retire before November 24, 2026
Claude Sonnet 4.5	Deprecated	Deprecated September 30, 2026; Claude API retirement scheduled for November 30, 2026; recommended replacement: Sonnet 5.5
Claude Opus 4.1	Retired	Retired from the Claude API on August 5, 2026; recommended replacement: Opus 4.8
Claude Opus 4 and Claude Sonnet 4	Retired	Retired from the Claude API on June 15, 2026
Claude 3.7 Sonnet	Retired	Retired from the Claude API on February 19, 2026
Claude 3.5 Sonnet	Retired	Retired from the Claude API on October 28, 2025
Claude 3.5 Haiku	Retired	Retired from the Claude API on February 19, 2026
Claude 3 Opus	Retired	Retired from the Claude API on January 5, 2026
Claude 3 Sonnet	Retired	Retired from the Claude API on July 21, 2025
Claude 3 Haiku	Retired	Retired from the Claude API on April 20, 2026
Claude 2 and Claude 2.1	Retired	Retired from the Claude API on July 21, 2025
Claude 1 and Claude Instant	Retired	Retired from the Claude API on November 6, 2024

Claude Product and Ecosystem Timeline

The timeline below preserves the popular Claude product history behind the model releases. It includes major Anthropic/Claude products, platform features, developer tools, Claude Code milestones, Claude Cowork, integrations, and access changes.

Recent 2026 Updates

Date	Milestone/Key Moment
October 22, 2026	Claude Models on Google Cloud (Anthropic managed) became generally available with Google Cloud IAM authentication, Marketplace billing, and usage that counts toward Google Cloud commitments. Anthropic operates the service and processes the data. US and Global endpoints support Fable 5.1, Opus 5.5, Sonnet 5.5, and Haiku 5.5, with new Claude Platform features and betas available on launch day. The offering includes Managed Agents in beta and Opus 5.5 fast mode.
October 21, 2026	Claude Duet opened a waitlist research preview for US Pro and Max subscribers. Powered by Opus 5.5, it provides briefings, monitors connected apps, and completes tasks in the background. It runs on iOS, Android, and claude.ai, shares Claude plan limits, and requires approval before sending messages, making payments, signing documents, or deleting content.
October 21, 2026	Claude Security added continuous repository scanning, automatic fix tracking, project knowledge bases, editable threat models, an API, webhooks, and an MCP connector. The update remains in public beta for Enterprise customers and uses models including Mythos without requiring Cyber Verification Program access.
October 21, 2026	Claude API version 2026-10-21 launched with new major SDK and ant CLI releases. The new version removes temperature, top_p, and top_k request parameters and changes several API response fields. Integrations need migration checks before upgrading.
October 20, 2026	Organization web access controls added web fetch disabling and domain restrictions in the Claude Console, also enforced in Managed Agents.
October 20, 2026	API user profiles launched to identify end customers per request and apply safety enforcement to individual users. Organization webhooks entered beta for enforcement notifications.
October 20, 2026	Inference hooks became generally available for Claude Enterprise organizations.
October 15, 2026	Claude Opus 5.5 fast mode left research preview, removed its access-request requirement, and added support for Azure-hosted Microsoft Foundry deployments.
October 15, 2026	Code Review became generally available for Team and Enterprise organizations. Reviews run automatically on new pull requests after setup, with Quick, Standard, and Deep review levels for each repository. Most reviews finish in 6–10 minutes.
October 14, 2026	Managed Agents scheduled deployments became available on Claude Platform on AWS.
October 14, 2026	OpenTelemetry export entered beta for tracing Messages API requests and Managed Agents sessions in observability platforms.
October 9, 2026	Claude Managed Agents dynamic workflows entered beta for multiagent tasks that run in phases and combine their results.
October 8, 2026	Claude Dashboards entered beta on paid plans for live dashboards built from connected data warehouses and business apps. Charts expose their queries and refresh times. Enterprise access is off by default.
October 8, 2026	Claude Motion entered beta on Team and Enterprise plans for editable, code-based animations of text, charts, shapes, and images, with MP4 export. Enterprise access is off by default.
October 8, 2026	Claude Docs, Slides, and Design became generally available on all plans, including Free. Artifacts added customer-managed encryption keys, team editing, external sharing controls, and mobile editing. On Enterprise plans, these three templates turn on by default October 15.
October 8, 2026	Standalone Claude Design migration opened ahead of the December 14, 2026 closure of claude.ai/design. Users can migrate design systems into Claude; standalone chats, comments, and public project links will be unavailable after closure.
October 8, 2026	Compliance API chat endpoints expanded to return chats from the unified Claude experience, in beta for Enterprise organizations using their existing Compliance Access Key.
October 7, 2026	Claude Haiku 5.5 launched as the third Claude 5.5 model for high-volume, cost-sensitive tasks. It supports a 1M-token context window, up to 128K output tokens, adaptive thinking, and adjustable effort. It is available on the Claude API, Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry.
October 7, 2026	Claude Sonnet 5.5 cache reads dropped from $0.20 to $0.10 per million tokens. Input, output, and cache-write prices stayed unchanged.
October 7, 2026	Monthly API credits began rolling out for Max and Team plans: $100 for Max 5x, $200 for Max 20x, and up to $500 pooled across Team seats. Users claim them by linking a Claude Console organization; unused credits expire each billing cycle.
October 7, 2026	Python and TypeScript SDK toolsets added beta support for browser use and computer use. Developers supply browser or desktop actions, while the SDK handles the tool loop and approval callbacks.
October 7, 2026	Claude Managed Agents tightened web access: limited cloud environments apply allowed hosts to web search and fetch, and web fetch accepts only URLs already present in the session.
October 6, 2026	Cyber Verification Program expanded into Defense Access, Red Team Access, and Specialized Access tiers for verified security professionals. The program integrates Project Glasswing and provides qualifying users with access to Opus 5.5, Sonnet 5.5, and Mythos 5.1 with tier-specific cyber safeguards.
October 6, 2026	Claude Startups expanded with up to $7,000 in Claude products and credits for eligible members, including a free year of up to five Team Premium seats for companies new to Team and a one-time $1,000 API credit. The new Claude Startup Stack offers up to $45,000 in partner benefits.
October 6, 2026	Claude for Google Workspace entered public beta on all paid Claude plans, with a sidebar add-on for editing Google Docs, Sheets, and Slides. New beta connectors also let Claude create and edit Google files from a conversation.
October 1, 2026	Claude Code mods launched in the CLI and desktop app. These TypeScript functions ship inside plugins and can rewrite prompts, customize tool calls and permission decisions, change the interface, and replace built-in features.
September 30, 2026	Claude Sonnet 4.5 entered deprecation, with retirement from the Claude API scheduled for November 30, 2026. Anthropic recommends migrating to Claude Sonnet 5.5.
September 30, 2026	Claude for Government became generally available to federal and state agencies through a FedRAMP High authorized environment. Claude Code CLI and Claude for Microsoft 365 also entered early access in that environment.
September 28, 2026	Anthropic released Claude Sonnet 5.5, the second model in the Claude 5.5 family. It generates output more than 30% faster than Sonnet 5 at the same API token prices.
September 25, 2026	Anthropic opened a developer portal for Claude plugins, where developers on paid plans can submit plugins to the Claude directory and track reviews and usage.
September 24, 2026	Claude Tag added personal connectors for requests in Slack channels, with controls for reviewing responses before posting. The feature began rolling out on Team plans.
September 23, 2026	Anthropic introduced Claude Marketplace to help teams discover plugins, connectors, agents, products, and service partners.
September 22, 2026	Anthropic released Claude Opus 5.5, the first model in the Claude 5.5 family. It matches Fable 5.1 on most work and costs 40% less to run than Opus 5 on typical workloads. Its API prices are 20% lower for input and output tokens and 60% lower for cache reads. See the Opus 5.5 pricing breakdown.

Date	Milestone/Key Moment
September 18, 2026	Anthropic partnered with Accenture on independent frontier-model evaluation, red-teaming, and safeguard testing.
September 17, 2026	Claude Code Projects entered beta for selected Pro and Max subscribers using cloud sessions. A coordinator can delegate work across parallel threads, review results, and assemble the completed work.
September 17, 2026	The Life Sciences Verification Program entered beta for teams and institutions, giving approved life-science researchers access to Mythos, Opus, and Sonnet models with more permissive biology safeguards.
September 17, 2026	Working in Claude Science, Claude optimized more than 30 open-source biomolecular models in under four weeks, with roughly 4x average speed-ups. Anthropic released the optimized code.
September 16, 2026	Anthropic began rolling out a combined Claude Cowork and chat experience. Claude Design, Claude Docs, and Claude Slides became available in conversations on all plans, including Free. On Enterprise plans, these features were in beta and off by default.
September 15, 2026	Salesforce in Claude entered beta for approved organizations on paid plans, bringing seller account, opportunity, and pipeline data into Claude with 37 sales skills.
September 15, 2026	Claude for Small Business expanded to 43 workflows and 27 new integrations, including Shopify, Salesforce, TikTok, Atlassian, Zoom, Xero, Square, Stripe, and Zapier.
September 14, 2026	Claude for Financial Advisors launched with connectors to financial custodians, portfolio platforms, CRMs, and planning tools, plus workflow skills for research, meeting preparation, and documentation.
September 1, 2026	Anthropic released Claude Fable 5.1 and Claude Mythos 5.1. Fable 5.1 became Anthropic’s most capable generally available model for long-running coding, research, and knowledge work, while Mythos 5.1 was invitation-only.
September 1, 2026	The Messages API introduced preserved thinking controls for Fable 5.1. For new API accounts, Fable 5.1 thinking blocks are bound to the model and conversation prefix, so developers should keep conversation history append-only and pass thinking blocks back unchanged.
September 1, 2026	Anthropic announced Enterprise Frontier Safeguards. The phased rollout will let eligible customers keep monitored activity data in cloud infrastructure they control and route automated misuse flags to their own review teams.
August 27, 2026	Anthropic opened a research preview of the Model Hardware Standard, a model-agnostic specification that lets Claude and other agents operate programmable lab and manufacturing equipment through MCP, command-line tools, or APIs.
August 27, 2026	Anthropic expanded its support for scientists with 10,000 free or discounted Claude Team seats for one year and up to $50,000 in Claude credits per eligible AI for Science project.
August 26, 2026	Claude now has its own built-in browser in Cowork.
August 25, 2026	Claude’s memory works everywhere, and you decide what’s in it.
August 20, 2026	Claude Academy became available with courses, tutorials, use cases, learning paths, completion tracking, badges, and a Claude Academy Skill.
August 20, 2026	Computer use, the browser use tool, the Skills API, and the Files API became generally available on the Claude Platform. Computer use can take several actions per turn, while the other APIs let agents use web pages, reusable skills, and stored files in production workflows.
August 20, 2026	Anthropic published the Claude Code Guide for Startups, which distills five operating rules from more than a dozen Claude Code deployments: ship broadly, automate tedious work, verify results, build for rebuilding, and move prototypes into production.
August 20, 2026	monday.com described rebuilding its platform around human-agent collaboration with Claude. The company reported more than 5 million agent interactions since its May launch.
August 19, 2026	Slack shared practices for human-agent teams using Claude Tag, including shared-channel context, agent-built briefings, clear handoffs, and human review of delegated work.
August 18, 2026	Claude Tag became Anthropic’s first responder for CI/CD incidents. Its first evidence-grounded analysis arrived after a median of 14 minutes, with human-reviewed fixes and pull requests supporting resolution.
August 18, 2026	The Gmail connector and Google Drive connector gained write actions. Claude can draft, send, reply to, and forward Gmail messages, and organize Drive files by moving, sharing, or trashing them. Claude asks for approval before changes by default.
August 18, 2026	Claude Cowork became available on the web and mobile apps for all paid plans. Remote sessions and files stay with the Claude account, so work can continue across devices.
August 17, 2026	ABC Legal reported more than 50 Claude Managed Agents in production, about 310 employees using Claude daily, and up to a 50% reduction in the cost of some human tasks.
August 13, 2026	Claude Tag began using wider channel context, memory, and standing instructions when deciding whether to respond proactively. Anthropic reported about a 30% improvement in that decision.
August 12, 2026	The Claude in Chrome side panel began using the same Cowork session as Claude on desktop, web, and mobile. Conversations are saved, and skills and connectors work in the browser.
August 11, 2026	The Compliance API beta expanded to Claude Cowork and Claude Code sessions, returning session content and metadata through the same interface used for Claude chats.
August 10, 2026	Anthropic made Claude Sonnet 5’s introductory API pricing permanent at $2 per million input tokens and $10 per million output tokens. Sonnet 5 announcement
August 7, 2026	Auto mode became the planned default for new Claude Code sessions on Pro, Max, and Team plans starting August 14. Its classifier checks tool calls for destructive, irreversible, or out-of-scope actions.
August 7, 2026	Anthropic updated Claude Fable 5’s biology safeguards, reducing biology-related fallbacks by about 85% in testing. Fable still falls back to Opus 5 for dual-use requests involving virology, toxicology, or molecular design.
August 6, 2026	Self-hosted Claude Code environments entered public beta for Team and Enterprise organizations, allowing sessions started from the web, mobile, desktop, or routines to run on infrastructure controlled by the organization.
August 5, 2026	Inference hooks entered beta for Claude Enterprise. A security server can inspect and allow or block prompts and tool responses across Claude, Claude Code, Cowork, MCP connectors, Skills, and plugins.
July 28, 2026	The MCP 2026-07-28 specification introduced a stateless core, standardized extensions for MCP Apps and Tasks, and stronger OAuth 2.0 and OIDC authorization as support rolled out across Claude products.

Date	Milestone/Key Moment
July 2026	Anthropic released Claude Opus 5. The model is available on the Claude API and major cloud platforms at the same $5 per million input tokens and $25 per million output tokens as Opus 4.8. It adds a 1M-token context window, 128K output tokens, adaptive thinking by default, and a five-level effort setting.
July 2026	Voice mode now runs on Claude’s more capable models and reaches the tools you’ve connected mid-conversation.
July 2026	The Claude Security plugin for Claude Code is now available in beta. Scan your changes for vulnerabilities before you commit, or run a full scan across your codebase, all from your terminal on the Claude inference you already run.
July 2026	New in Claude Cowork: teach Claude a skill. Record your screen while you do a task, talk through it as you go, and Claude turns it into a skill it can run again. Find it under Record a skill in the + menu of the Claude desktop app. Available on Pro, Max, and Team plans.
July 2026	Anthropic announced Claude for K-12 teachers, a free, premium-tier AI platform tailored specifically for verified U.S. K-12 educators.
July 2026	Your monthly recap shows when you use Claude most and what you spent that time working on, with options to set quiet hours and nudges to take breaks. Find your dashboard in Settings under Reflect.
July 2026	Claude Cowork began rolling out to mobile and web, with remote sessions that continue in the cloud and follow users across devices.
June 2026	Anthropic introduced Claude Sonnet 5, a Sonnet model for agentic coding, tool use, reasoning, knowledge work, and lower-cost agent workflows.
June 2026	Anthropic introduced Claude Science, a beta AI workbench for scientific research on macOS, Linux, remote machines, and HPC environments.
June 2026	Claude in Microsoft Foundry is now generally available, hosted on Azure.
June 23, 2026	Anthropic introduced Claude Tag, a persistent team agent that works inside shared Slack channels.
June 2026	Anthropic introduced Claude Fable 5 and Claude Mythos 5. Fable 5 became the newest generally available Claude model, while Mythos 5 launched for restricted trusted-access use.
May 2026	Anthropic introduced Claude Opus 4.8, an Opus upgrade for coding, agentic tasks, professional work, and long-running collaboration.
May 2026	Claude Code introduced dynamic workflows in research preview. Claude can plan large tasks, run many parallel subagents, verify outputs, and report results back to the user.
May 2026	Claude added effort control in claude.ai and Cowork, which gives users a way to choose how much effort Claude puts into a response.
May 2026	The Messages API added support for system entries inside the messages array, so developers can update Claude’s instructions mid-task.
May 2026	Anthropic announced Claude for Small Business, a package of connectors and ready-to-run workflows for small business tasks.
May 2026	The Claude Platform on AWS became available. Claude also remained available on Amazon Bedrock, where AWS is the data processor. Claude Platform on AWS
May 2026	Agent View was added to Claude Code.
April 2026	Anthropic added connectors for creative work, including Blender, Autodesk, Adobe, Ableton, Splice, and more.
April 2026	Claude added connectors for everyday apps, including AllTrails, Instacart, Audible, TripAdvisor, Intuit TurboTax, and more. Claude connectors
April 2026	Claude for Word became available on Pro and Max plans.
April 2026	Anthropic announced Claude Design, an Anthropic Labs product for designs, prototypes, slides, one-pagers, and related visual work.
April 2026	Anthropic introduced Claude Opus 4.7, an Opus upgrade for advanced software engineering, complex workflows, high-resolution vision, and professional work.
April 2026	Anthropic announced Routines in Claude Code, which can run on a schedule, from an API call, or in response to an event.
April 2026	Anthropic redesigned Claude Code on desktop with side-by-side sessions and a sidebar for session management.
April 2026	Anthropic announced an Advisor tool on the Claude Platform.
April 2026	Claude Cowork became generally available on paid plans.
April 2026	Anthropic introduced Claude Managed Agents, a suite of APIs for building and deploying cloud-hosted agents.
April 30, 2026	Claude Security entered public beta for Enterprise customers to scan codebases, validate findings, and suggest patches for review.
March 2026	Anthropic introduced auto mode in Claude Code, a permissions mode where Claude makes permission decisions with safeguards.
March 2026	Claude gained the ability to use a computer to complete tasks.
March 2026	Claude added support for interactive charts, diagrams, and visualizations.
February 2026	Anthropic introduced Claude Sonnet 4.6, a broad upgrade across coding, computer use, long-context reasoning, agent planning, knowledge work, and design.
February 2026	Anthropic announced Claude Opus 4.6, with stronger planning, code review, debugging, long-running agent reliability, and 1M context in beta.
January 2026	Web connectors became available across Claude, Claude Desktop, and Claude Mobile for paid plans and some free-plan users.
January 2026	Anthropic introduced Cowork, a file-based work surface that gives Claude access to a chosen local folder.
January 2026	Anthropic announced Claude for Healthcare, a set of HIPAA-ready tools and resources for healthcare use cases.
November 2025	Anthropic released Claude Opus 4.5 for coding, agents, computer use, spreadsheets, and long-running chats.
October 2025	Claude for Excel entered beta as a research preview. Claude for Excel
October 2025	Claude Desktop became generally available. Claude Desktop
October 2025	Claude Code became available on the web for Pro and Max users. Claude Code on the web
October 2025	Claude Skills launched as packaged instructions, resources, and workflows for Claude. Claude Skills
October 2025	Anthropic released Claude Haiku 4.5 on October 15, 2025, as a fast, lower-cost model in the Claude 4.5 generation.
September 2025	Anthropic released Claude Sonnet 4.5 for agents, coding, and computer use.
September 2025	Claude added memory for Team and Enterprise users and incognito chats for all users. Claude memory
September 2025	Claude added file creation and editing. File creation and editing
August 2025	Claude Code added new admin controls for business plans. Claude Code on Team and Enterprise
August 2025	Claude Sonnet 4 added support for a 1M token context window. 1M context
August 2025	Anthropic released Claude Opus 4.1 as an upgrade for coding and agentic tasks. Claude Opus 4.1
July 2025	Claude added the ability to draft and send emails, messages, and calendar invites from the Claude app.
July 2025	Claude Code added subagents for specialized assistants inside Claude Code. Claude Code subagents
June 2025	Local MCP servers gained one-click installation on Claude Desktop.
June 2025	Claude gained the ability to build, host, and share interactive AI-powered apps inside Claude. Claude-powered Artifacts
June 2025	Claude Code added support for remote MCP servers.
June 2025	Projects on Claude added support for 10 times more content.
June 2025	Claude Code became available as part of the Pro plan.
May 2025	Web search became available to all Claude users.
May 2025	Anthropic began rolling out voice mode in beta on mobile.
May 2025	Anthropic launched Claude Opus 4 and Claude Sonnet 4 for coding, advanced reasoning, and AI agent workflows.
May 2025	Research became available on mobile.
May 2025	Anthropic announced the Web Search API for developers. Web Search API
May 2025	Anthropic announced Integrations and expanded Research. Claude Integrations
April 2025	Anthropic introduced Research and a Google Workspace integration for Claude. Claude Research
April 2025	Anthropic introduced the Max plan for heavier Claude usage. Claude Max plan
April 2025	Anthropic released Claude for Education.
March 2025	Claude added web search. Claude web search
February 2025	Anthropic introduced Claude Code in limited research preview. Claude 3.7 Sonnet and Claude Code
February 2025	Anthropic announced Claude 3.7 Sonnet, a hybrid reasoning model. Claude 3.7 Sonnet
November 2024	Anthropic introduced Styles for Claude. Claude Styles
November 2024	Anthropic introduced the Model Context Protocol. Model Context Protocol
November 2024	Claude added prompt improvement and example management in the Anthropic Console. Prompt improver
November 2024	Claude 3.5 Haiku became available on the Anthropic API, Amazon Bedrock, and Google Cloud Vertex AI.
October 2024	Anthropic released Claude for Desktop. Claude Desktop
October 2024	Anthropic introduced the analysis tool in Claude.ai. Analysis tool
October 2024	Anthropic announced an upgraded Claude 3.5 Sonnet, Claude 3.5 Haiku, and computer use in public beta. Claude 3.5 models and computer use
October 2024	Anthropic launched the Message Batches API. Message Batches API
August 2024	Artifacts became generally available. Artifacts
August 2024	Anthropic published system prompts for Claude models. Claude system prompts
August 2024	Anthropic announced prompt caching on the Claude API. Prompt caching
July 2024	Anthropic released the Claude Android app. Claude Android app
June 2024	Claude 3.5 Sonnet launched as the first Claude 3.5 model. Claude 3.5 Sonnet
May 2024	Tool use became generally available across the Claude 3 model family on the Anthropic Messages API, Amazon Bedrock, and Google Cloud Vertex AI. Tool use GA
March 2024	Anthropic launched the Claude 3 family with Haiku, Sonnet, and Opus. Claude 3 family
November 2023	Anthropic introduced Claude 2.1 with a 200K token context window, lower hallucination rates, system prompts, and early tool use. Claude 2.1
September 2023	Anthropic introduced Claude Pro for the Claude.ai chat experience. Claude Pro
August 2023	Anthropic introduced Claude Instant 1.2. Claude Instant 1.2
July 2023	Anthropic introduced Claude 2. Claude 2
May 2023	Claude’s context window expanded from 9K tokens to 100K tokens. 100K context windows
March 2023	Anthropic introduced Claude. Introducing Claude

Claude Code Milestones

Date	Claude Code Milestone
February 24, 2025	Claude Code launched in limited research preview with Claude 3.7 Sonnet.
June 2025	Claude Code gained remote MCP server support and became available through the Claude Pro plan.
July 2025	Subagents added specialized assistants inside Claude Code.
August 2025	Team and Enterprise administration controls expanded business deployment.
October 2025	Claude Code became available on the web for Pro and Max users.
March 2026	Auto mode introduced safeguarded permission decisions for longer-running tasks.
April 2026	Routines added scheduled, API-triggered, and event-triggered Claude Code work.
April 30, 2026	Claude Security entered public beta for Enterprise customers, with codebase vulnerability scanning and patch suggestions.
May 2026	Dynamic workflows introduced large task planning, parallel subagents, output verification, and long-running execution.
June 23, 2026	Claude Tag extended the Claude Code model into persistent, team-based Slack collaboration.
October 1, 2026	Mods added TypeScript customization of prompts, tools, permissions, and the interface in the Claude Code CLI and desktop app.
October 15, 2026	Code Review became generally available for Team and Enterprise organizations, with automatic pull request reviews and Quick, Standard, and Deep review levels.

See the complete Claude Code timeline for release-by-release coverage. Developers can also use the Claude Code resource list, Claude Code commands cheat sheet, Agent Skills collection, AI CLI resources, and coding agent resources.

Claude Generations Explained

Claude 1 established Anthropic’s public assistant experience in 2023. It focused on conversation, writing, summarization, Q&A, coding, and text processing.

Claude 2 expanded the model’s practical use with longer responses, stronger reasoning, better coding performance, API access, and a larger context window. Claude 2.1 then moved the product toward enterprise workflows with a 200K context window, system prompts, and early tool use.

Claude 3 introduced a clear model family: Haiku for speed, Sonnet for balanced performance, and Opus for the most demanding tasks. This generation also brought stronger vision capabilities and better accuracy.

Claude 3.5 improved the Sonnet and Haiku lines. Claude 3.5 Sonnet became a major model for coding, reasoning, visual tasks, Artifacts, and computer use. Claude 3.5 Haiku added a faster option for lower-cost workloads.

Claude 3.7 Sonnet introduced hybrid reasoning. It gave Claude a standard response mode and an extended thinking mode for tasks that benefit from deeper reasoning.

Claude 4 moved Claude deeper into coding, agents, advanced reasoning, and tool-based work. Claude Opus 4 and Claude Sonnet 4 became the foundation for later 4.x model upgrades.

Claude 4.5, 4.6, 4.7, and 4.8 refined Claude for real work across software engineering, long-running agents, computer use, design, spreadsheets, file work, and professional analysis.

Claude Haiku 5.5, Claude Sonnet 5.5, Claude Opus 5.5, Claude Fable 5.1, and Claude Mythos 5.1 are the newest releases in their model lines. Haiku 5.5 focuses on fast, low-cost tasks at scale. Sonnet 5.5 serves faster everyday and coding work, while Opus 5.5 handles more complex tasks. Fable 5.1 handles demanding work; Mythos 5.1 provides the same underlying model through restricted trusted-access programs.

Claude Model Names: Haiku, Sonnet, Opus, Fable, and Mythos

Claude Model Line	What It Means	Typical Role
Haiku	Smallest named Claude model line in recent families.	Fast responses, high-volume tasks, lower-cost workflows.
Sonnet	Middle Claude model line.	Balanced coding, reasoning, writing, agents, and knowledge work.
Opus	Top mainstream Claude model line before Fable and Mythos.	Hard coding tasks, agentic work, long-running workflows, and professional analysis.
Fable	Generally available Mythos-class model line.	Complex long-horizon tasks with safeguards for general use.
Mythos	Restricted Mythos-class model line.	Approved cyberdefense, research, and trusted-access programs.

Major Claude Product Milestones

Claude’s product history extends beyond model launches. The major product lines below changed where Claude runs, what it can access, and how much work users can delegate.

Claude Code brought Claude into terminals, repositories, development environments, and long-running software tasks. Its later milestones include MCP support, subagents, web access, routines, dynamic workflows, security scanning, Code Review, and Claude Tag. The Claude Code timeline provides the full product history.

Claude Desktop, Claude for Excel, Claude for Word, Claude for Google Workspace, Claude Cowork, and connectors expanded Claude into local files, documents, spreadsheets, business systems, and repeatable work. Claude Cowork added a file-based work surface for delegated tasks, then extended remote sessions to the web and mobile apps. Claude in Chrome can continue the same Cowork session across those surfaces.

Claude Design, Claude Docs, and Claude Slides provide editable designs, documents, and presentations inside conversations. All three became generally available on October 8, 2026. Claude Dashboards added live analysis of connected business data, while Claude Motion added editable animations and MP4 export. Claude Science introduced a dedicated research workbench. Claude Security added codebase scanning and patch suggestions, followed by continuous monitoring, fix tracking, and API and MCP integrations in October 2026.

Skills, the Model Context Protocol, Managed Agents, Routines, and dynamic workflows form the core of Claude’s agent ecosystem. The Model Context Protocol directory covers MCP servers, while the Agent Skills collection covers reusable instructions and workflows.

Claude Duet introduced a proactive assistant powered by Opus 5.5. It monitors connected apps, prepares briefings, and continues delegated work in the background. Its October 21, 2026 research preview opened through a waitlist for US Pro and Max subscribers on iOS, Android, and claude.ai.

Claude Tag extended Claude into shared Slack channels as a persistent team agent. It connects to selected tools, data, and codebases, builds channel-specific context, and completes delegated tasks for teams.

How Claude Changed Over Time

Claude’s early releases focused on safer chat, longer context, and general assistant tasks. The middle period focused on model families, better accuracy, vision, tool use, and stronger coding. The recent releases focus on agents, computer use, long-context workflows, enterprise integrations, and product-specific assistants.

The clearest trend is that Claude has moved from single-turn chat toward delegated work. Newer Claude releases handle tasks that involve files, tools, codebases, apps, images, documents, connectors, safeguards, and long-running plans.

Claude Timeline Changelog

Update	What Changed
October 21, 2026	Added Claude Duet, continuous Claude Security scanning and integrations, Code Review general availability, and October developer platform updates. Corrected the Claude Security public beta date in the Claude Code milestones and refreshed the product summaries.
October 9, 2026	Added Claude Dashboards and Claude Motion beta launches, general availability of Claude Docs, Slides, and Design, the standalone Design migration and closure date, and Managed Agents web access restrictions. Updated the product summary and Claude Design FAQ.
October 8, 2026	Added Claude Haiku 5.5, Sonnet 5.5 cache-read pricing changes, monthly API credits for Max and Team plans, browser and computer use SDK toolsets, and expanded Compliance API support. Updated the latest model, current lineup, status table, and FAQ.
October 7, 2026	Added Claude for Google Workspace, expanded Claude Startups benefits, Claude Code mods, Claude for Government general availability, the expanded Cyber Verification Program, and Sonnet 4.5 deprecation. Updated Mythos access and Claude Docs and Slides availability, and corrected the Claude Security public beta date.
September 29, 2026	Added Claude Sonnet 5.5, Claude Marketplace, plugin submissions, and Claude Tag personal connectors.
September 23, 2026	Updated Claude Opus 5.5 model and pricing details, added recent Claude product and science milestones, and corrected the Claude for Financial Advisors launch date.
September 12, 2026	Corrected the Claude Opus 4.1 replacement guidance, added Claude Instant 1.2 to the model release table, corrected the Claude Tag entry, and added related AI model references.
September 1, 2026	Added Claude Fable 5.1 and Claude Mythos 5.1, preserved thinking controls, Enterprise Frontier Safeguards, the Model Hardware Standard research preview, and expanded support for scientists. Updated the current model lineup and Claude Opus 4.1 retirement status.
August 25, 2026	Starting today, the memory you use in chat is the same as in Claude Cowork. Now, wherever you work with Claude, it starts from what it already knows about you. You can see everything Claude remembers, topic by topic, and edit or delete any of it.
August 21, 2026	Added Claude Academy, the general availability release for computer use, browser use, the Skills API, and the Files API, recent Claude Tag and Managed Agents deployments, enterprise controls, self-hosted Claude Code, the MCP 2026-07-28 release, and other August updates.
August 18, 2026	Added Gmail and Google Drive write actions, Cowork on web and mobile, shared Claude in Chrome sessions, permanent Sonnet 5 pricing, and updated Fable 5 biology safeguards.
August 1, 2026	Added current model status, retirement dates, Claude Code milestones, and stronger internal links.
July 24, 2026	Added Claude Opus 5.
June 30, 2026	Added Claude Sonnet 5 and the restoration of Fable 5 and Mythos 5 access.
June 23, 2026	Added Claude Tag.
June 9, 2026	Added Claude Fable 5 and Claude Mythos 5.
May 28, 2026	Added Claude Opus 4.8 and dynamic workflows.
April 17, 2026	Added Claude Design.

FAQs

Q: When did Claude first come out?

A: Claude first came out on March 14, 2023. Anthropic introduced Claude and Claude Instant through a chat interface and API.

Q: What is the latest Claude model release?

A: Claude Haiku 5.5 is the most recent Claude model release. Anthropic released it on October 7, 2026.

Q: What are the current Claude models?

A: The current comparison lineup includes Claude Haiku 5.5, Claude Sonnet 5.5, Claude Opus 5.5, and Claude Fable 5.1. Claude Mythos 5.1 has restricted availability through approved trusted-access programs, including the expanded Cyber Verification Program.

Q: What are the Claude versions in order?

A: The main generations are Claude 1, Claude 2 and 2.1, Claude 3, Claude 3.5, Claude 3.7 Sonnet, Claude 4 and its 4.x updates, followed by Claude Fable 5 and 5.1, Claude Mythos 5 and 5.1, Claude Sonnet 5 and 5.5, and Claude Opus 5 and 5.5.

Q: When did Claude Code come out?

A: Claude Code came out on February 24, 2025, as a limited research preview with Claude 3.7 Sonnet. It later added MCP support, subagents, web access, routines, dynamic workflows, and Claude Tag.

Q: What is Claude Tag?

A: Claude Tag is a persistent team agent that starts in Slack. Teams can connect it to selected channels, tools, data, and codebases, then delegate tasks by tagging @Claude.

Q: What is Claude Design?

A: Claude Design supports designs, interactive prototypes, and one-pagers inside Claude conversations. It launched in research preview on April 17, 2026, and became generally available on October 8, 2026, on all plans, including Free. The standalone claude.ai/design site closes on December 14, 2026.

Q: What is the difference between Claude Haiku, Sonnet, Opus, Fable, and Mythos?

A: Haiku prioritizes speed and cost. Sonnet balances speed and intelligence. Opus targets complex agentic and professional work. Fable is the generally available Mythos-class line with additional safeguards, while Mythos is restricted to approved trusted-access programs.

Q: Which Claude models are retired?

A: Retired API models include Claude 1 and Instant, Claude 2 and 2.1, Claude 3 Sonnet and Opus, Claude 3 Haiku, Claude 3.5 Sonnet and Haiku, Claude 3.7 Sonnet, and the original Claude 4 Opus and Sonnet model IDs. The status table above lists the main retirement dates.

Q: Is there a fixed release date for the next Claude model?

A: Anthropic has not published a fixed schedule for the next Claude model. This page records confirmed releases rather than predictions or rumors.

Q: Does this timeline include Claude product updates?

A: Yes. The page includes major Claude model launches and named product milestones such as Claude Code, Claude Duet, Claude Tag, Claude Design, Claude Docs, Claude Slides, Claude Dashboards, Claude Motion, Claude Science, Claude Security, Claude Cowork, Claude Academy, computer use, the Skills API, the Files API, Skills, MCP, Desktop, Artifacts, connectors, and Managed Agents.