Anthropic launches Claude Sonnet 5.5, second model in the 5.5 family
Anthropic released Claude Sonnet 5.5 on September 28 as the second model in its Claude 5.5 family, a faster companion to Opus 5.5 that the company says is strongest at well-scoped everyday tasks, bug fixing and polished documents, slides and spreadsheets, and that generates output more than 30% faster than Sonnet 5. According to Anthropic’s announcement, it is the first Sonnet to beat Pokémon Red working only from screenshots and the first to ship with cyber safeguards like those on the company’s most capable models, with higher-risk security requests falling back to Sonnet 5. It is available on all of Anthropic’s platforms, including Amazon Web Services, Google Cloud and Microsoft Azure, and on the Claude Platform as claude-sonnet-5-5; Anthropic says Claude Haiku 5.5 will follow in the coming weeks.