Anthropic Launches Claude Sonnet 5.5: 30% Faster AI at Same Price Ahead of IPO
Anthropic shipped a new flagship model on Monday — and the sticker price didn’t move a cent. Claude Sonnet 5.5, the second model in Anthropic’s Claude 5.5 family, went live on September 28, 2026. Pricing holds steady at $2 per million input tokens and $10 per million output tokens, unchanged from its predecessor, Sonnet 5. The pitch is efficiency instead: Anthropic says the new model generates output more than 30% faster and needs far fewer tokens to finish the same work, cutting the cost of a completed task by up to 30%. ...