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Second-letter sort

instruction-following · GPT-5.4 nano · GPT-4.1 nano · Claude Haiku 4.5

The prompt (verbatim, sent to every lane)

Sort these eight words by their second letter, a to z: begin, chill, cameo, affix, edict, abide, agile, octet. Reply with just the comma-separated list.
How scoring works

Every lane gets the identical prompt at the same moment. A small script — not an AI judge — checks each answer against the rule below and stamps it CORRECT or WRONG; the line under each lane shows exactly what the check saw. No partial credit.

This challenge's rule

Exact match after lowercasing and comma-spacing normalization: cameo, abide, octet, edict, begin, affix, agile, chill. Any preamble fails — the instruction is the test. Scoring strips leading/trailing whitespace and one wrapping pair of code fences or quotes before it judges — content over ceremony. Winner rule: correct → cheapest → fastest.

Prices as listed by OpenAI and Anthropic, July 2026. Costs come from provider usage fields × list prices — nothing is invented.