Anthropic shipped Claude Opus 4.8 today. My favourite thing about it is this note in the release announcement: Users will find Opus 4.8 to be a modest but tangible improvement …

Anthropic's latest flagship AI model Claude Opus 4.8 arrives with sharper reasoning, tighter alignment, and a price tag that hasn't budged.

Anthropic says Opus 4.8 is “more likely to flag uncertainties.”

A Mythos-class model is expected in the coming weeks.