Claude Sonnet 5.5: near-Opus results, 30% faster, same price
Anthropic's Claude Sonnet 5.5 runs over 30% faster than Sonnet 5, costs up to 30% less per task at the same per-token price, and lands within a few points of Opus 5.5 on most benchmarks. Here is what is new and what developers need to change.
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