Release notes
xAI's official release notes for Grok: new Grok models and what changed for developers building with them.
New model·Sep 1, 2026Announcement
Grok 4.7, SpaceXAI's frontier model for coding, agentic tasks, and knowledge work, is now available on the xAI API as grok-4.7. It has a 500k context window, text and image inputs with text-only output, and no text output limit. Pricing is $2 / $0.50 / $6 per 1M tokens (input / cached input / output) below 200k prompt tokens, and $4 / $1 / $12 above.
New model·Sep 1, 2026
grok-voice-transcribe-2.0 is now available. Use grok-voice-transcribe-1.0 or grok-voice-transcribe-2.0; the default is grok-voice-transcribe-1.0.
New model·Aug 1, 2026Announcement
Grok 4.6, SpaceXAI's frontier model for coding, agentic tasks, and knowledge work, is now available on the xAI API. It has a 500k context window, text and image inputs with text-only output, and no text output limit. Pricing is $2 / $0.50 / $6 per 1M tokens (input / cached input / output) below 200k prompt tokens, and $4 / $1 / $12 above.
New model·Jul 1, 2026Announcement
Grok 4.5, SpaceXAI's model for coding, agentic tasks, and knowledge work, is now available on the xAI API. Priced at $2 / 1M input tokens and $6 / 1M output tokens, with configurable reasoning effort (low, medium, or high; default high).
New model·Jul 1, 2026
Grok 4.5 is now available in the API console for EU users.
grok-imagine-video-1.5 now supports text-to-video, image-to-video, and reference-to-video (including optional preset voices), with native 1080p for T2V and I2V. Text-to-video on this model runs as text-to-image then image-to-video under the hood.
grok-voice-think-fast-2.0 is now available with Speech to Speech. grok-voice-latest will route to this model starting August 5, 2026. To get started, see the Speech to Speech docs.
New model·May 1, 2026
xAI's coding model, trained specifically for agentic coding workflows. Currently in early access. The model slug is grok-build-0.1.
New model·Apr 1, 2026Announcement
You can now use grok-voice-think-fast-1.0 with the Speech to Speech API. To get started, check out the Speech to Speech docs.
New model·Mar 1, 2026
For more details on Grok 4.20 Multi-agent, check out the docs
New model·Nov 1, 2025
You can now use Grok 4.1 Fast models with the agent tools, check out the documentation of agent tools to get started. The price of agent tools drops by up to 50% to no more than $5 per 1000 successful calls, see the new prices at the pricing page.
New model·Nov 1, 2025Announcement
You can now use Grok 4.1 Fast in the xAI Enterprise API.
New model·Jul 1, 2025
You can now use Grok 4 via our API or on https://grok.com.
New model·Apr 1, 2025
Our latest flagship Grok 3 models are now generally available via the API. For more info, see models.
New model·Mar 1, 2025
The image generation model is available on API. Visit Image Generations for more details on using the model.
New model·Dec 1, 2024
A month ago, we launched the public beta of our enterprise API with grok-beta and grok-vision-beta. We’re adding grok-2-1212 and grok-2-vision-1212, offering better accuracy, instruction-following, and multilingual capabilities.