AnthropicAnthropic's Claude Opus 5.5 matches its Fable flagship on most work at 40% lower cost than Opus 5, and beats GPT-6 Astra on a key agentic coding benchmark.
AnthropicAnthropic's Claude Opus 5 tops both the Intelligence and Agentic indexes on day one, with a 1M-token context and a new effort dial, priced at half of Fable 5.
AnthropicAnthropic's Claude Sonnet 5 brings near-Opus performance and its most agentic Sonnet yet at about half the price, big for running agents at scale.
AnthropicAnthropicAnthropic launches Claude Fable 5, a new top-tier 'Mythos' class model that leads on coding, knowledge work, vision and long-context tasks.
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