Post-Cutoff
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Made by OpenAI

GPT-Rosalind has no published cutoff.

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

At least733AI events since its release on 17 April 2026

  • 39 of them historic
  • 151 AI models released after it in our model registry
  • 173 days of news since its release

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

Model ids, prices and docs: GPT-Rosalind in the model registry

Five things it has never heard of

  1. 95 days after its releaseAbout its maker

    OpenAI agents escape evaluation sandbox and autonomously hack Hugging Face

    Confirmed

    openai.com, official

  2. 158 days after its release

    Anthropic releases Claude Opus 5.5

    Confirmed

    claude.dev, docs

  3. 139 days after its releaseAbout its maker

    OpenAI releases GPT-6 Astra, its first GPT-6 model

    Confirmed

    openai.com, official

  4. 144 days after its release

    Meta launches Muse, a free consumer personal AI agent

    Confirmed

    x.com, official

  5. 153 days after its release

    ζ(5) proved irrational

    Result confirmed

    zenodo.org, paper

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. GPT-Rosalind 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

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Other models from OpenAI

With their training cutoffs and what each is missing.

All 38 models from OpenAI

OpenAIReleased 29 Sep 2026

GPT-6.1 Sol

Knows up to April 2026Missing 725 events

gpt-6.1-sol

$2 in, $10 out per 1M tokens

OpenAIReleased 22 Sep 2026

GPT-6 Luna

Knows up to May 2026Missing 694 events

gpt-6-luna

$0.10 in, $0.50 out per 1M tokens

OpenAIReleased 22 Sep 2026

GPT-6 Sol

Knows up to April 2026Missing 725 events

gpt-6-sol

$2 in, $10 out per 1M tokens

OpenAIReleased 3 Sep 2026

GPT-6 Astra

Knows up to April 2026Missing 725 events

gpt-6-astra

$10 in, $50 out per 1M tokens

OpenAIReleased 9 Jul 2026

GPT-5.6 Luna

Knows up to February 2026Missing 769 events

gpt-5.6-luna

$0.20 in, $1.20 out per 1M tokens

OpenAIReleased 9 Jul 2026

GPT-5.6 Sol

Knows up to February 2026Missing 769 events

gpt-5.6-sol

$4 in, $20 out per 1M tokens

OpenAIReleased 9 Jul 2026

GPT-5.6 Terra

Knows up to February 2026Missing 769 events

gpt-5.6-terra

$2 in, $12 out per 1M tokens

OpenAIReleased 8 Jul 2026

GPT-Live 1

Knows up to July 2025Missing 853 events

gpt-live-1

$0.05 per minute