Benchmark · KnowledgeCompetitive

PostTrainBench

Updated 2026-07-24
Models tested
23
Top score
41.8
Claude Fable 5
Median
19.0
min 7.3
Top-5 spread
σ 3.3
Competitive

Best score over time · one chart, every benchmark

POSTTRAINBENCH22 MODELS · FRONTIER RUNNING MAX0255075100SCORE ↑Sep 25Dec 25Feb 26May 26Jul 26RELEASE DATE →benchgecko.ai/benchmark/posttrainbench · frontier
Frontier on PostTrainBench rose from 7.4 to 41.8 in 9 months · +34.4 points · latest leader Claude Fable 5 from Anthropic.
Pink dots = frontier records · 8 totalClick to open model page

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