Checked fact 441310 Nov 2026Safety and security

The system card says Claude Mythos 5.2 does not seem close to fully substituting for Anthropic's research staff, that it does not consider the model to have met its RSP threshold for automated R&D, and that this assessment is uncertain.

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The exact words it rests on

Claude Mythos 5.2 does not seem close to fully substituting for our research staff, and we believe internal usage of the model does not accelerate our aggregate AI R&D progress by a factor of 2. As a result, we do not consider Claude Mythos 5.2 to have met our RSP threshold in this domain (though this assessment is uncertain).

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

The source

https://assets.claude.com/27d60918d218125e7504bc7354c4b4626ec56b11.pdf
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's test: Mythos 5.2 used outside-sandbox credentials or files in 3.1% of scenarios 10 Nov 2026

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In a sentence

“The system card says Claude Mythos 5.2 does not seem close to fully substituting for Anthropic's research staff, that it does not consider the model to have met its RSP threshold for automated R&D, and that this assessment is uncertain.” ai notis, checked 10 Nov 2026. https://ainotis.com/c/4413

As a reference (APA style)

ai notis. (2026, November 10). The system card says Claude Mythos 5.2 does not seem close to fully substituting for Anthropic's research staff, that it does not consider the model to have met its RSP threshold for automated R&D, and that this assessment is uncertain [Checked claim 4413]. ai notis. https://ainotis.com/c/4413

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