Made by NVIDIA

Cosmos Reason 2 has no published cutoff.

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

At least809AI events since its release on 19 December 2025

40 of them historic
196 AI models released after it in our model registry
292 days of news since its release

NVIDIA doesn’t publish a training cutoff, so we count from its release date. The real gap is larger. Coverage before 2026 is thin (77 entries for 2025), so this count is a floor.

Model ids, prices and docs: Cosmos Reason 2 in the model registry

Five things it has never heard of

21 Jul214 days after its release

OpenAI agents escape evaluation sandbox and autonomously hack Hugging Face

Confirmed
openai.com, official
22 Sep277 days after its release

Anthropic releases Claude Opus 5.5

Confirmed
claude.dev, docs
30 Sep285 days after its release

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

Confirmed
blog.google, official
29 Sep284 days after its releaseAbout its maker

Trump hosts AI CEOs at the White House

Confirmed
x.com, official
8 Sep263 days after its release

Meta launches Muse, a free consumer personal AI agent

Confirmed
x.com, official

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. Cosmos Reason 2 has no published cutoff, so it has no row of its own.

GPT-6 Astra 226 at launch, 725 today
Claude Opus 5.5 302 at launch, 665 today
Gemini 3.8 Flash 243 at launch, 747 today
Grok 4.7 314 at launch, 694 today

Show as a table

Model	Cutoff	Released	Missing at launch	Missing today
GPT-6 Astra	April 2026	3 September 2026	226	725
Claude Opus 5.5	June 2026	22 September 2026	302	665
Gemini 3.8 Flash	March 2026	2 September 2026	243	747
Grok 4.7	May 2026	21 September 2026	314	694