Anthropic releases Sonnet 5.5, saying it generates outputs 30%+ faster than Sonnet 5 and costs up to 30% less per task, and plans to release Haiku 5.5 soon (Anthropic)

Anthropic has released Sonnet 5.5, an update that reportedly generates outputs over 30% faster and costs up to 30% less per task compared to Sonnet 5. This new version is positioned as a faster, more cost-effective alternative to Claude Opus 5.5, which is designed for complex tasks requiring careful judgment. Anthropic also announced plans to release Haiku 5.5 in the near future.