Unverified50% confidenceBenchmarkExact time
LangChain's Deep Agents, on GPT-5.2-Codex, raised its Terminal-Bench 2.0 score from 52.8% to 66.5% solely by restructuring the harness.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/24/2026
First Seen
Valid until: 1/22/2027
Sources
Related Entities
Related Claims
UnverifiedOn the Terminal-Bench 2.0 benchmark, the same model GPT-5.5 scores from 66.07% to 88.09% under different harnesses (a gap of about 22 percentage points).74% similarUnverifiedThe full TwinCheck strategy improved the task success rate of the GPT-5.6 Sol model from 45.3% to 58.5%, with a 95% task bootstrap confidence interval of [8.2, 18.8].64% similar
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