Claude Sonnet 5.5 Beats Opus 5.5 On Terminal-Bench And Runs 30% Faster Than Sonnet 5
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Claude Sonnet 5.5 Beats Opus 5.5 On Terminal-Bench And Runs 30% Faster Than Sonnet 5
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Summary Report
Claude Sonnet 5.5 keeps Sonnet 5's price, runs 30%+ faster and beats Opus 5.5 on Terminal-Bench 4.0.
- 01. Terminal-Bench 4.0: 70.6% vs Opus 5.5 66.4% and Sonnet 5 10.3%
- 02. OSWorld 2.1: 80.1%, within two points of Opus 5.5; level on GDPval-AA knowledge work
Anthropic has released Claude Sonnet 5.5, the second model in the Claude 5.5 family. It keeps Sonnet 5's price, runs more than 30% faster and costs up to 30% less for most work. On Terminal-Bench 4.0 it scores 70.6% against Sonnet 5's 10.3%, beating Opus 5.5's 66.4%. On OSWorld computer use it hits 80.1%, within two points of Opus, and it's level with Opus on knowledge-work tests. Anthropic pitches it as the faster, cheaper complement to Opus for everyday tasks, bug fixes, documents, slides and spreadsheets.
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