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xAI Docs

xAI · Docs

xAI Docs

July 12, 2026 at 12:17 AM UTC

Updated the models overview note to state the Grok 4.5 knowledge cutoff is February 1, 2026.

Changelog

Developers / Models

  • Updated the models overview note to state the Grok 4.5 knowledge cutoff is February 1, 2026.
  • Added a Knowledge cutoff row (February 1, 2026) to the Grok 4.5 model details table.

Developers / REST API (Chat / Responses)

  • Documented image_generation_calls (integer, required) — number of image generation calls — in the chat/response usage fields.
  • Expanded the documented output and tools array type unions to include an additional object variant.

Other

  • Minor typo fix in a reasoning example on the text reasoning capabilities page.

No pages were added or removed.

Older release← Jul 11, 00:17 UTCNewer release→ Jul 12, 06:17 UTC
All xAI Docs releases →