This is bigger news than it appears I’ve had early access to Sonnet 5.5 for a bit now and honestly at first I couldn’t tell the difference between this and Opus 5.5 It’s a fraction of the price of Opus, which already felt like you got an absurd amounts of usage out of for cheap It’s clear Anthropic has had some sort of breakthrough the last month The jump in intelligence, speed, and affordability of all their 5.5 models is maybe the biggest leap we’ve ever seen in AI You need to be using…

Claude@claudeai1h ago

Introducing Claude Sonnet 5.5, the second model in the Claude 5.5 family. It’s a clear upgrade over Sonnet 5, runs more than 30% faster, and costs up to 30% less for most work.