The company said Claude Sonnet 5.5 runs 30%+ faster, and costs up to 30% less for most work than its predecessor.

Anthropic says that on several evaluations, Sonnet 5.5 running at Low or Medium effort can surpass Sonnet 5’s best score at ...

Claude Sonnet 5.5 is announced but not released yet. Treat circulating speed and pricing claims as unconfirmed until ...

Anthropic’s Claude Sonnet 5.5 delivers 30% faster output, stronger coding performance, and up to 30% lower per-task costs ...

Sept 28 (Reuters) - Anthropic on Monday released Claude Sonnet 5.5, the second model in its Claude 5.5 family, as the AI lab ...

Anthropic noted that Sonnet 5.5 is more than 30% faster than the previous generation in output speed, making it the fastest ...

Anthropic released Claude Sonnet 5.5 on September 28, 2026, the second model in its Claude 5.5 family. The model keeps Claude ...

Anthropic said it blocked scientists who used its Claude AI models "in ways that could support biological weapons development." ...

Anthropic declined an Australian Senate AI hearing as officials investigate an OpenAI agent breach and consider mandatory AI ...

Anthropic will not appear before an Australian senate committee hearing on AI on October 1, a source familiar with the matter ...

Anthropic has released Claude Sonnet 5.5 on Monday. It is the second model in its Claude 5.5 family. The AI lab is expanding ...