Capability gains

Anthropic launches Claude 3.5 Sonnet with stronger coding

Anthropic launched Claude 3.5 Sonnet across its consumer service, API, Amazon Bedrock and Google Cloud, with major gains in coding, visual reasoning and agentic tool-use evaluations.

CURRENT ASSESSMENT · REVISION 1
TOWARD DOOM76confidence 99/100

Why it moved the index

The model advanced frontier coding, visual reasoning and tool-use performance while receiving immediate multi-cloud and free consumer distribution, combining capability and deployment gains.

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AUDIT TRAIL

Assessment history

  1. R1
    Toward 76 · confidence 99

    New June 2024 exact frontier model release and broad deployment.

    12 Aug 2026