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Agentic Task Completion on Terminal-Bench Hard 2 (30 tasks)

56.7Pass@1Codex
32.36438.6824551.318Apr 28, 2026

Evaluation results

MethodLinks
CodexBase Model=GPT-5.4 (high reasoning), Rollouts (k)=22026.0456.7
TF-GRPOBase Model=GPT-5.4 (high reasoning), Rollouts (k)=22026.0455.6
AHEBase Model=GPT-5.4 (high reasoning), Rollouts (k)=22026.0453.3
NexAU0Base Model=GPT-5.4 (high reasoning), Rollouts (k)=22026.0451.7
ACEBase Model=GPT-5.4 (high reasoning), Rollouts (k)=22026.0448.9
terminus-2Base Model=GPT-5.4 (high reasoning), Rollouts (k)=22026.0440
opencodeBase Model=GPT-5.4 (high reasoning), Rollouts (k)=22026.0433.3