Claude Sonnet 5.5
Anthropic released Claude Sonnet 5.5, over 30% faster and up to 30% cheaper while beating Sonnet 5.
Anthropic released Claude Sonnet 5.5, priced the same as Sonnet 5 but described as running more than 30% faster and costing up to 30% less for most work. Simon Willison reports it appears to beat Sonnet 5 on every benchmark and approaches Opus 5.5 on some coding tasks, including viral 3D animation prompts. A pelican SVG test at max thinking effort hit the same 128,000-token bug as Opus 5.5 and failed after costing $1.28; an xhigh run succeeded in 41 seconds for 5.74 cents.
76