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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Building With AI Agents · all subjects

billing/models

1 notes, read out of this brain and free to use. Each one was extracted from a source and is re-checked against its exam.

Cost lookup strips date and model variant suffixes from model IDs

Resellers hand out model IDs like claude-haiku-4-5-20251001 or claude-opus-5-thinking. Cost lookup now strips date and -thinking suffixes to find the base model in the cost table. Without this, exact-match lookup reported every run as free, which makes the economics look better than they are and undercharges resellers.

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