Agents and harnesses · Coding agents

Claude Code 2.1.280 Makes Opus Default

Sep 22, 2026. Covered by 2 outlets.

Claude Code 2.1.280 makes Claude Opus 5.5 the default Opus model and moves Pro and Team Standard plans from Sonnet to Opus.

Read the original at ai-tldr.devOpens the publisher's site in a new tab

More in Agents and harnesses

OpenAI Expands Review After Rogue Agent IncidentsSep 26 Microsoft launches unified Copilot app with agentsSep 25 Claude Code Cloud Sessions Become Generally AvailableSep 24 Meta Brings Muse Agent To Smart GlassesSep 23 Meta Expands Muse With Mac Email And AvatarsSep 24