Bench: Clef-flash 9/12 at ~0.5 s with uninformative confidence, Llama 12/12 at ~2.6 s. brain=fast draws Clef's chart at once and redraws only if the LLM's differs. Series and filter questions reworded around the three misses. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01VDkN7ukK1kXkqov8FaZxva