Ex-Anthropic researcher Coxon says Mythos could be retrained with a fraction of the compute

The Decoder · rss · 2026-11-14

Former OpenAI and Anthropic researcher Jacob Coxon told The Decoder why he left Anthropic: citing a slide from the company's IPO roadshow, he argues its algorithms are improving at an accelerating rate — Anthropic could already retrain Mythos with "a fraction of the compute originally needed."

Coxon continues to call for a pause on frontier model development, arguing competitors should be allowed to catch up so human-level AI becomes a commodity rather than a moat.

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