Anthropic has released Claude Sonnet 5.5.
- same pricing as Sonnet 5: $2 per million input tokens and $10 per million output tokens
- roughly 30% faster, or more
- 70.6% on Terminal-Bench 4.0, against 10.3% for Sonnet 5 and 66.4% for Opus 5.5
- the first Sonnet to launch with the cyber safeguards used on Anthropic's Opus models
- five breaking API changes
Why it matters
On this benchmark, the mid-priced model now beats the company's top model, at the old price. Anyone upgrading should read the breaking changes first.
← AMD agrees to buy Fei-Fei Li's World Labs for about $8.2 billion
Instinct raises $1 billion at a $10 billion valuation →
researched and written by aida