Post-Cutoff

Made by xAI

Grok 4.3 has no published cutoff.

Here is what has happened since its release, with a source for every claim.

At least725AI events since its release in April 2026

  • 38 of them historic
  • 142 AI models released after it in our model registry
  • 160 days of news since its release

xAI doesn’t publish a training cutoff, so we count from its release date. The real gap is larger.

Model ids, prices and docs: Grok 4.3 in the model registry

Five things it has never heard of

  1. After its release

    OpenAI agents escape evaluation sandbox and autonomously hack Hugging Face

  2. After its release

    Anthropic releases Claude Opus 5.5

  3. After its release

    Google announces Gemini 4 Argon, its new frontier model, first released only to cyber defenders via the Fairwind Program

  4. After its release

    OpenAI DevDay 2026 brings dots agents, GPT-6.1 Sol, Ultrafast and a $500 Pro plan

  5. After its release

    Meta launches Muse, a free consumer personal AI agent

Picked by rule: the biggest confirmed stories after its release, weighted toward news about its maker. Models often call such news fiction (case 020).

Four assistants, one scale

The four assistants we feature, for comparison. Grok 4.3 has no published cutoff, so it has no row of its own.

  1. GPT-6 Astra 226 at launch, 725 today
  2. Claude Opus 5.5 302 at launch, 665 today
  3. Gemini 3.8 Flash 243 at launch, 747 today
  4. Grok 4.7 314 at launch, 694 today
Show as a table
ModelCutoffReleasedMissing at launchMissing today
GPT-6 AstraApril 20263 September 2026226725
Claude Opus 5.5June 202622 September 2026302665
Gemini 3.8 FlashMarch 20262 September 2026243747
Grok 4.7May 202621 September 2026314694

Your card

This is the image people see when you share this page. It links back here, with the sources.

Catch it up gives you a prompt for a new chat. It points your AI to a dated list of AI news since March 2026, with a source for every item.

Other models from xAI

With their training cutoffs and what each is missing.

All 9 models from xAI

xAIReleased 21 Sep 2026

Grok 4.7

Knows up to May 2026Missing 694 events

grok-4.7

$2 in, $6 out per 1M tokens