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Model launch

Anthropic releases Claude Sonnet 4.6

Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project m

Type
MODEL_LAUNCH
Detection
benchmark
Confidence
high
Status

Primary source

Epoch AI Benchmarking Hub · epoch.ai/benchmarks/eci ↗

Independent benchmark runs (GPQA Diamond, SWE-bench Verified, FrontierMath, ...) plus externally reported leaderboards and the Epoch Capabilities Index (ECI).

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