Modelsstrong signal
Anthropic releases Claude Sonnet 5.5, with input and output tokens at half the Opus 5.5 price
Claude Sonnet 5.5 keeps Sonnet 5's prices: $2 per million input tokens and $10 per million output tokens. That is half of what Opus 5.5 charges, while Anthropic's own benchmarks put the two models within a few points of each other. Code that turns thinking off needs a change before the switch, because the old setting now returns an error.
Anthropicverified