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The price of frontier-grade AI just dropped about 90% in 90 days. Sonnet 5 launched June 30 as Anthropic's best price-performance model. Today's Sonnet 5.5 beats its top scores on several benchmarks while spending roughly a tenth of the money per task. Same $2 per million token list price. The savings come from somewhere sneakier. Your AI bill is price times tokens consumed, and everyone watches the wrong half. List prices barely moved all year. Token efficiency is where the collapse is…
Introducing Claude Sonnet 5.5, the second model in the Claude 5.5 family. It’s a clear upgrade over Sonnet 5, runs more than 30% faster, and costs up to 30% less for most work.
