Checked fact 446510 Nov 2026Research

The post's caption describes a single run per model.

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The exact words it rests on

a single run per model

What the source said when we opened it, on 10 Nov 2026.

The source

Claude Fable 5.2 and Claude Mythos 5.2
Anthropic · 2026-11-09

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Checked

Checked by the notis newsroom on 10 Nov 2026, against the source above.

In the story

Anthropic says 1,000 Fable 5.2 agents formalized Fermat's Last Theorem in Lean in 30 hours; the post names no checker. 10 Nov 2026

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“The post's caption describes a single run per model.” ai notis, checked 10 Nov 2026. Source: Claude Fable 5.2 and Claude Mythos 5.2 (Anthropic). https://ainotis.com/c/4465

As a reference (APA style)

ai notis. (2026, November 10). The post's caption describes a single run per model [Checked claim 4465]. ai notis. https://ainotis.com/c/4465

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