Anthropic Expands Claude Opus 5.5 Session Limits, Weekly Caps Stay

Anthropic has expanded per-session limits for Claude Opus 5.5 while keeping weekly caps unchanged. The update continues its rivalry with OpenAI, whose Sol 6.1 adds free resets and a session toggle.

• Opus 5.5: longer sessions, weekly cap unchanged
• OpenAI Sol 6.1 adds free resets and a toggle
• Opus 5.5 is more token-efficient on simple tasks, costlier on complex ones
• Sol 6.1 does not beat Opus 5.5 in every scenario