BRO WHAT?! > #1 on the Intelligence Index > +5 freaking points higher than Astra > AND it costs ~40% less to run than Opus 5. > tested by METR this is their first model since calling for “pacing” the frontier. https://x.com/Hesamation/status/21024413…

Claude@claudeai3h ago

Introducing Claude Opus 5.5, the first model in our new Claude 5.5 family. It performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5.