ANTHROPIC IR snapshot

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AI research and products that put safety at the frontier. AI will have a vast impact on the world. Anthropic is a public benefit corporation dedicated to securing its benefits and mitigating its risks.
Claude Fable 5.2 and Mythos 5.2
Our most capable models for daunting technical work, setting a new bar in coding, finance, and the sciences.
[Introducing Fable 5.2 and Mythos 5.2](/claude-fable-and-mythos-5-2)
Our most capable models for daunting technical work. Claude Fable 5.2 sets a new bar in coding, finance, and the sciences.
- System Card
- [View](/claude-fable-5-2-mythos-5-2-system-card)
[Read announcement](/claude-fable-and-mythos-5-2)
[Introducing Claude Opus 5.5](/claude-opus-5-5)
Claude Opus 5.5 leads in agentic coding and knowledge work, and costs 40% less to run than Opus 5 on typical workloads.
[Read announcement](/claude-opus-5-5)
[Introducing Claude Sonnet 5.5](/claude-sonnet-5-5)
Claude Sonnet 5.5 is a clear upgrade over Claude Sonnet 5, runs 30%+ faster, and costs up to 30% less for most work.
[Read announcement](/claude-sonnet-5-5)

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