Anthropic releases Claude Sonnet 5.5: 30% faster and cheaper per task at the same price
Prepared by Sintelligent with the help of SI. Publication time restored from the build log. . Updated: .
A strong model for everyday work has become faster and cheaper, and an affordable SI assistant for code and documents is going mainstream.
The second model in the Claude 5.5 family after Opus 5.5 generates responses more than 30% faster and costs up to 30% less per task thanks to fewer tokens and tool calls; the price is unchanged at $2/$10 per million input/output tokens, identifier claude-sonnet-5-5. It is the first Sonnet model launched with cyber safeguards and fallback measures like those of more powerful systems, and the first Sonnet to complete Pokémon Red from screenshots alone. Anthropic promises a Haiku of the new version "in the coming weeks."