xAI changelog: September 2026

3 releases from to

Everything xAI shipped in September 2026, collected from official xAI sources. Each entry is dated and links to the page it came from.

September 2026 at a glance

In September 2026, xAI released Grok 4.7, a model with a 500k context window, text and image inputs, and no text output limit. Grok Voice Transcribe 2.0 updated transcription capabilities, and the safety_identifier request field was added to the Grok API for user identification.

Summary generated from the releases listed below.

September 2026 was xAI's 6th busiest month of the 12 months to then: 3 releases, close to its monthly average of 4. That was 1 release fewer than August 2026. Releases were spread across Developer Tools (1), Model (1) and Product (1).

Releases

3

-1 vs August 2026

Rank of 12 months

6th

Average 3.8 a month

Most shipped

Developer Tools

1 release

Notable xAI launches in September 2026

  • Model

    Grok 4.7

    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 /…

    Source: xAI Release Notes
  • Product

    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 .

    Source: xAI Release Notes
  • Developer Tools

    safety_identifier request field

    You can now send safety_identifier, an opaque end-user identifier assigned by your application, on Chat Completions, the Responses API, deferred chat completions, the Batch API, and the gRPC GetCompletionsRequest . It lets SpaceXAI attribute a policy violation to one of your end…

    Source: xAI Release Notes

All xAI releases in September 2026

Newest first. Each entry links to the official page it came from.

September 20263 releases

safety_identifier request field

You can now send safety_identifier, an opaque end-user identifier assigned by your application, on Chat Completions, the Responses API, deferred chat completions, the Batch API, and the gRPC GetCompletionsRequest . It lets SpaceXAI attribute a policy violation to one of your end…

Grok APIDeveloper ToolsSource: xAI Release Notes

Grok 4.7

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 /…

Where September 2026 sits

xAI releases per month, for September 2026 and the 11 months before it. A taller bar means more releases that month; the dated entries for each month are on its own page.

Other companies in September 2026

26 of the companies we track shipped in September 2026; xAI ranks 16th by number of releases.

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