Anthropic launches Claude Sonnet 5.5, a faster, cheaper AI model

SentiSense · Published Sep 28, 2026, 2:00 PM ET · Updated Sep 28, 2026, 4:51 PM ET

Anthropic released Claude Sonnet 5.5 on Monday, replacing Sonnet 5 as its mid-tier model. The company says it runs more than 30% faster and costs up t...