xAI announced Grok in November 2023 as a beta assistant with access to live information from X. Its release history now includes reasoning models, image and video generation, voice APIs, coding agents, and autonomous Grok Bot features. The company behind Grok also changed: xAI acquired X in 2025 and joined SpaceX in February 2026.
This timeline starts with the July 2023 announcement of xAI and continues through October 2026, including Grok 4.7 and The X Subscription. Each date identifies a model announcement, public rollout, API release, product milestone, or company change.
Last updated: October 14, 2026
Grok release timeline
2026: Grok models and milestones
| Date | Event |
|---|---|
| October 14, 2026 | Grok Voice 3.0 launches in the Voice Agent API at $0.08 per minute, unchanged from Voice 2.0. It supports real-time speech-to-speech conversations and tool use, and powers voice mode in Grok Bot and the Grok assistant in Tesla vehicles. The grok-voice-latest alias automatically switches to grok-voice-3.0 with no API changes; grok-voice-2.0 is deprecated. |
| October 12, 2026 | The X Subscription launches, unifying Grok, Grok Bot, Cursor, and X Premium. New subscriptions open immediately; migration for existing customers begins rolling out. |
| October 8, 2026 | Grok Imagine Video 1.5 Lite becomes available through the API for lower-cost text-to-video and image-to-video generation with audio. |
| October 2, 2026 | The grok-voice-transcribe-1.0 API model retires. Requests to its existing model ID are redirected to version 2.0. |
| September 28, 2026 | Team Bots launches for Cursor teams, with shared Bot knowledge and private individual conversations. |
| September 21, 2026 | Grok 4.7 launches for coding, multi-step agent tasks, and knowledge work. The grok-4.7 API model has a 500K-token context window. |
| September 18, 2026 | Grok Voice Transcribe 2.0 is announced for batch and streaming speech recognition, including timestamps and speaker diarization. |
| September 16, 2026 | Grok Build gains project and global memory for information carried into later coding sessions. |
| September 3, 2026 | Grok Bot becomes available to Grok and Cursor enterprise customers with organizational access and audit controls. |
| August 29, 2026 | Grok Bot introduces an X connector for posts, timelines, mentions, and trends. |
| August 26, 2026 | Grok 4.6 becomes available in Microsoft Foundry. Grok Bot expands to SuperGrok, Cursor Pro, and Cursor Teams plans. |
| August 19, 2026 | Grok Build expands to all plans on web, iOS, and Android for building and publishing apps through chat. Grok 4.6 also reaches Amazon Bedrock. |
| August 14, 2026 | Grok 4.6 becomes available in GitHub Copilot for cloud agents, the Copilot CLI, and VS Code. |
| August 14, 2026 | SpaceX completes its acquisition of Cursor. |
| August 12, 2026 | Grok 4.6 launches for coding, agent tasks, and knowledge work, with a 500K-token context window and configurable reasoning. |
| August 11, 2026 | Grok Bot enters beta as an autonomous agent that uses a persistent cloud computer and connected apps. |
| August 7, 2026 | Grok Imagine Image 2 launches for image generation and editing on the web and Grok mobile apps. |
| July 31, 2026 | Grok Imagine Video 1.5 adds reference-to-video and native 1080p generation for supported modes. |
| July 29, 2026 | Grok Voice 2.0 launches as a speech-to-speech voice model with improved conversations and tool use. |
| July 22, 2026 | Grok 4.5 rolls out to grok.com, X, iOS, and Android, following its earlier API availability. |
| July 16, 2026 | Grok 4.5 receives its public launch announcement, emphasizing coding and agent tasks. Grok Automations launches for scheduled or triggered work. |
| July 15, 2026 | The Grok Build coding-agent harness becomes open source. |
| July 8, 2026 | Grok 4.5 becomes available through the xAI API, ahead of the July 16 launch announcement and July 22 consumer rollout. |
| June 18, 2026 | Grok becomes available through Word and Databricks Agent Bricks. |
| June 17, 2026 | Grok 4.3 becomes generally available through Amazon Bedrock, with a 1M-token context window. |
| June 16, 2026 | Grok Imagine Video 1.5 reaches general API availability; Grok for PowerPoint launches. |
| May 29, 2026 | Grok Build 0.1 enters public beta on the xAI API as a coding-focused model. |
| May 25, 2026 | Grok Build launches as a terminal coding agent in early beta. |
| May 18, 2026 | Skills launches across Grok web and mobile apps for reusable instructions and document workflows. |
| May 15, 2026 | Older Grok API models, including Grok 3, Grok 4, Grok 4 Fast, and Grok Code Fast 1, reach scheduled retirement; legacy model IDs redirect to newer models. |
| May 6, 2026 | Connectors launches for external app integrations in Grok. |
| April 30, 2026 | Grok 4.3 reaches the API, following its April beta. The model has a 1M-token context window. |
| April 23, 2026 | Grok Voice 1.0 becomes available through the speech-to-speech API. |
| April 15, 2026 | Speech-to-Text API reaches general availability, followed by developer tools for multilingual streaming transcription. |
| March 16, 2026 | Text-to-Speech API reaches general availability. |
| March 10, 2026 | Grok 4.20 and Grok 4.20 Multi-agent become available through the API, introducing multi-agent collaboration. |
| February 2, 2026 | SpaceX announces that it has acquired xAI. |
| January 28, 2026 | Grok Imagine API expands into video generation and editing and updated image workflows. |
2025: Grok models and milestones
| Date | Event |
|---|---|
| December 17, 2025 | Grok Voice Agent API launches for developer-built voice agents. |
| November 19, 2025 | Grok 4.1 Fast and Agent Tools API launch, including web and X search, code execution, file search, and MCP tools. |
| November 17, 2025 | Grok 4.1 rolls out to grok.com, X, iOS, and Android. |
| September 19, 2025 | Grok 4 Fast launches with lower-cost reasoning, search access, and a context window of up to 2M tokens. |
| August 28, 2025 | Grok Code Fast 1 launches as a model optimized for agentic coding. |
| July 9, 2025 | Grok 4 and Grok 4 Heavy launch with native tool use, real-time search, subscription tiers, and API access. |
| April 3, 2025 | Grok 3 becomes available through the developer API. |
| March 28, 2025 | xAI acquires X, bringing Grok and the social network under one company. |
| February 19, 2025 | Grok 3 and Grok 3 mini are announced in beta, with Think reasoning and DeepSearch capabilities. |
2024: Grok models and milestones
| Date | Event |
|---|---|
| December 12, 2024 | Grok expands access on X with search, citations, and improved multilingual support. |
| December 9, 2024 | Aurora adds image generation to Grok. |
| November 4, 2024 | The xAI API public beta opens with grok-beta, function calling, and a 128K-token context window. |
| August 13, 2024 | Grok-2 and Grok-2 mini enter beta. |
| May 15, 2024 | Grok-1.5 becomes available through X. |
| April 12, 2024 | Grok-1.5V is announced as a vision model for documents, charts, diagrams, and images. |
| March 28, 2024 | Grok-1.5 is announced with improved reasoning and a 128K-token context window. |
| March 17, 2024 | xAI releases Grok-1 model weights and architecture under the Apache 2.0 license. |
2023: Grok models and milestones
| Date | Event |
|---|---|
| December 7, 2023 | Grok becomes available through X following its initial beta announcement. |
| November 6, 2023 | xAI announces PromptIDE for prompt engineering and interpretability research. |
| November 3, 2023 | xAI announces Grok as an early beta AI assistant with access to real-time information from X. |
| July 12, 2023 | Elon Musk announces xAI. |
Related resources
- Anthropic Claude Timeline
- Timeline of ChatGPT
- Google AI Timeline
- Meta AI Timeline
- Grok Build: SpaceXAIâs Open-source Terminal AI Coding Agen
- Grok Build CLI Cheatsheet: Commands, Shortcuts, Config, and Workflows
FAQs
What is the latest Grok language model?
As of October 15, 2026, Grok 4.7 is the latest publicly announced general-purpose Grok language model. It launched on September 21, 2026, and is available through the xAI API as grok-4.7. Grok Imagine and Grok Voice use separate model families.
Has Grok 5 been released?
No Grok 5 public release was confirmed as of October 13, 2026. xAI reported in January 2026 that Grok 5 was in training, but it did not provide a confirmed release date.
Why are there several different dates for a Grok model?
An API debut, an official announcement, and availability on grok.com, X, or mobile can happen on different dates. This timeline distinguishes those events when each marks a meaningful change.
What are xAI, SpaceXAI, and SpaceXSI?
xAI introduced Grok in 2023. SpaceX acquired xAI in February 2026, and SpaceXAI became the companyâs public brand. In October 2026, its current official site and subscription terms also use SpaceXSI, while the legal entity is listed as SpaceXAI LLC. These names refer to the company behind the Grok products.
