Claude & Claude Code news

Claude Sonnet 5.5 is out! We wrote a guide for building with it: • choosing between Sonnet 5.5 and Opus 5.5 • migrating from Sonnet…

Claude can now help you build evaluations and hillclimb on them. In this article, we share guidance on eval design & skills that Claude Code…

@LEJ_limited gave Sonnet 5.5 a 60×46 pixel emoji and asked for a 3D model he could print. A few hours later, it was on his…

A thread of early experiments with Claude Sonnet 5.5. A fall foliage simulator by @_re_pete , made with Sonnet 5 vs Sonnet 5.5. pic.twitter.com/bVbUmS7tSw

Sonnet 5.5 is smarter, more efficient, and 30% faster than Sonnet 5. It costs up to 30% less for most work, so your Claude Code…

Price is the same as Sonnet 5: $2/$10 per million tokens with cache reads at $0.20. Thinking is always on but you can use `between_tools`…

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…

Two ways to submit: - Single MCP connector: point to your remote MCP server - Plugin bundle: combine MCP servers and skills in a GitHub…

It’s now easier to build plugins for Claude. We built a new portal to submit your plugin, track review, and see usage. Plugins package MCP…

As we roll this out, it's available for: - Pro plans once a week - Max and Team Premium plans each time a 5-hour session…

Claude Code will now try to find a graceful stopping point when you hit your 5-hour limit mid-task, instead of cutting off mid-edit. It gets…

Opus 5.5 is 20% cheaper per input and output token than Opus 5, and 60% cheaper on cache reads. So what does that actually do…

Claude FM 🎵 music for thinking and building https://t.co/ORVEHOr1Dh

Claude Opus 5.5 has been out for a few days. Some of our favorite things people have explored and discovered with it so far: https://t.co/FPJnNX0kio

https://t.co/8wFUiDx8K2