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Anthropic launches Claude Opus 4.8, prepares Mythos-class models for all customers

Anthropic released Claude Opus 4.8 to all users with unchanged pricing, featuring improvements in model honesty that enable it to better acknowledge knowledge gaps and avoid unsupported claims. The company also announced plans to make its Mythos-class models available to all customers in the coming weeks.

read1 min publishedMay 29, 2026

Anthropic has released Claude Opus 4.8 and outlined plans for broader access to its Mythos-class models, which the company expects to make available to all customers in the coming weeks. Claude Opus 4.8 (Source: Anthropic) Claude Opus 4.8 is available to all users, with pricing unchanged from Opus 4.7. Anthropic highlighted improvements in model honesty, noting that Opus 4.8 is more likely to acknowledge when it lacks sufficient information and less likely to make unsupported … More

The post Anthropic launches Claude Opus 4.8, prepares Mythos-class models for all customers appeared first on Help Net Security.

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