Skip to content
Back

AI posts

AI release notes

xAI's official release notes for Grok: new Grok models and what changed for developers building with them.

Compiled by the Toolstash team · Updated

  1. New model

    Grok Voice 3.0 is available

    grok-voice-3.0 is now available with Speech to Speech, at the same price as Grok Voice 2.0. grok-voice-latest now points to grok-voice-3.0, so sessions that use the alias are upgraded automatically. The API is unchanged.

  2. New model

    grok-voice-transcribe-1.0 end of life

    grok-voice-transcribe-1.0 is deprecated and reaches end of life on October 2, 2026. All requests to that slug are routed to grok-voice-transcribe-2.0 at the same price, with higher accuracy.

  3. New modelAnnouncement

    Grok 4.7

    Grok 4.7, SpaceXSI'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.

  4. New model

    Grok Voice Transcribe 2.0

    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-2.0.

  5. New modelAnnouncement

    Grok 4.6

    Grok 4.6, SpaceXSI'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.

  6. New modelAnnouncement

    Grok 4.5

    Grok 4.5, SpaceXSI'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).

  7. New model

    Grok 4.5 available in the EU

    Grok 4.5 is now available in the API console for EU users.

  8. New model

    grok-imagine-video-1.5 modalities

    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.

  9. New modelAnnouncement

    Grok Voice 2.0 is available

    grok-voice-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.

  10. New modelAnnouncement

    Grok Voice Think Fast 2.0 is available

    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.

  11. New model

    Grok Build 0.1

    SpaceXSI's coding model, trained specifically for agentic coding workflows. Currently in early access. The model slug is grok-build-0.1.

  12. New modelAnnouncement

    Grok Voice 1.0 is available

    Grok Voice 1.0 is now available with the Speech to Speech API. To get started, check out the Speech to Speech docs.

  13. New modelAnnouncement

    Grok Voice Think Fast 1.0 is available

    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.

  14. New model

    Grok 4.20 and Grok 4.20 Multi-agent are live

    For more details on Grok 4.20 Multi-agent, check out the docs

  15. New model

    Agent tools adapt to Grok 4.1 Fast models and tool prices dropped

    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.

  16. New modelAnnouncement

    Grok 4.1 Fast is available in Enterprise API

    You can now use Grok 4.1 Fast in the xAI Enterprise API.

  17. New model

    Grok 4 is released

    You can now use Grok 4 via our API or on https://grok.com.

  18. New model

    Grok 3 models launch on API

    Our latest flagship Grok 3 models are now generally available via the API. For more info, see models.

  19. New model

    Image Generation Model available on API

    The image generation model is available on API. Visit Image Generations for more details on using the model.

  20. New model

    Released the new grok-2-1212 and grok-2-vision-1212 models

    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.