Model

GPT-5.1 Codex Max

OpenAI · closed weights

openai.com

Agentic / Tool Use

Agentic / Tool Use
BenchmarkScoreMetricHarnessSourceConfidenceLink
Terminal-Bench60.4accuracyCodex CLIIndependentmediumtbench.ai
Terminal-Bench57.8accuracyCruxIndependentmediumtbench.ai
Terminal-Bench53.5accuracyLetta CodeIndependentmediumtbench.ai
Terminal-Bench36.9accuracyTerminus 2Independentmediumtbench.ai

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