🤖Claude Sonnet 5.5: 70.6% Terminal-Bench 4.0 at $2/$10
TL;DR
Anthropic released Claude Sonnet 5.5 on September 28 at the same $2/$10 per million token price as Sonnet 5. It scores 70.6% on Terminal-Bench 4.0 and 80.1% on OSWorld 2.1, and runs over 30% faster.
Anthropic released Claude Sonnet 5.5 on September 28 at the same $2/$10 per million token price as Sonnet 5. It scores 70.6% on Terminal-Bench 4.0 and 80.1% on OSWorld 2.1, and runs over 30% faster.
Key Points
70.6% on Terminal-Bench 4.0, versus 10.3% for Sonnet 5
80.1% on OSWorld 2.1 for computer use
Generates output 30%+ faster, with up to 30% lower cost per task
Pricing holds at $2 input, $10 output, $0.20 cache reads per million tokens
Live on Claude.ai, the API (claude-sonnet-5-5), AWS, Google Cloud and Azure
Why It Matters
A mid-tier model that nearly matches Opus 5.5 on knowledge work at Sonnet pricing pushes agent builders to re-run their model routing. The catch: the Terminal-Bench jump is vendor-reported.
Quick Facts
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