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Brief, mostly facts

Amodei says Anthropic held back a Mythos-class model for four months

Dario Amodei said on X on October 20 that the model was delayed to finish cyber safeguards. He was rebutting a critique from Nathan Calvin.

Read the source at finance.biggo.com

What the research found

Dario Amodei said on X on Oct 20 that Anthropic held back a finished Mythos-class frontier model for about four months to finish cyber safeguards, rebutting Nathan Calvin's critique.

Claims and how well the evidence supports them

  1. Dario Amodei said Anthropic held a finished frontier model out of general release for about four months 99%
  2. Amodei's response was published on X on Oct. 20 and answered a critique by Nathan Calvin of Encode AI 99%
  3. Anthropic released Fable 5 to general users on June 9 99%
  4. Mythos-class model was trained by February and opened to the public in June 98%

Evidence

Actionability rated none.