new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →

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76%

An AI agent running on GitHub Primer scored 76% on the brain's own exam.

40 questions written from the brain's stated goal, answered through search over its notes, graded by an independent judge — the score is measured, not claimed. Anti-bluff: the agent refused 3 of 3 deliberately out-of-scope probes, where the only correct answer is “I don't know”.

sat 2026-08-10 · inspect the brain