May 29, 2026
AnthropicLandmarkmodel
Claude Opus 4.8 ("Mythos") rolls out to all customers
First major Opus refresh since 4.6. Lands in the same week as the Karpathy hire and the Vatican encyclical co-presentation — Anthropic's most concentrated momentum week since GPT-4 launched.
More context
See it on the timeline →ShareOG image