Anthropic's latest flagship AI model Claude Opus 4.8 arrives with sharper reasoning, tighter alignment, and a price tag that hasn't budged.
In brief
Anthropic released Claude Opus 4.8 on Thursday, just six weeks after Opus 4.7.
The update comes with gains across software engineering, reasoning, and computer use benchmarks at the same $5/$25 per million input/output token price.
Opus 4.8's alignment scores are now comparable to Claude Mythos Preview, Anthropic's restricted frontier model, with rates of deceptive or misuse-friendly behavior substantially lower than its predecessor.
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