claude sonnet xhigh series

Each model's score on the Intelligence board (Text arena) on the last day it was listed

1. claude-sonnet-5.5-xhighNo longer on the boardsReleased Oct 1, 20261,475#36

• Nov 102026IndustryAnthropic kicks off IPO roadshow under ticker ANT
• Nov 72026AI toolsAnthropic is building multiplayer for Claude Code
• Nov 62026AI toolsClaude Code can now set up its own cloud sessions
• Nov 62026ResearchClaude uses 'dreaming' to clean up its agent memory
• Nov 62026AI toolsClaude's iOS app tests a new side nav redesign
• Nov 62026ResearchAnthropic puts Claude into EVE Online to trade, fight, and miss the spy