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Anthropic launches Claude Sonnet 5.5 with faster output

· TestingCatalog ·
Sonnet 5.5 is pitched as the faster, cheaper Claude 5.5 model for bounded daily work.

Anthropic says the model runs more than 30% faster than Sonnet 5 and can cost up to 30% less per task for most workloads, while per-token pricing stays unchanged. The piece cites large benchmark gains, including 70.6% on Terminal-Bench 4.0 versus 10.3% for Sonnet 5. It is available across Claude platforms and major clouds under `claude-sonnet-5-5`, with adjustable effort settings. Anthropic is also bringing Opus-style cyber safeguards to this Sonnet release, while saying routine software development and most life sciences work should not be affected. TestingCatalog's note

score 8

Categories: Model Releases