SONNET 5.5 IS OUT! It has dramatically improved writing even versus Opus 5.5 in my testing for @every. Astra is still my favorite for writing, but this model beats it at revision tasks. It's faster and cheaper than Opus 5.5, so it's @kieranklaassen's preferred model for quick iterative coding and design work. But both @kplikethebird and @hammer_mt feel like they don't have room in their stack for mid-tier models anymore. Full vibe check coming on @every! Until then you can see Sonnet's…

Claude@claudeai2h 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.