Expired75% confidenceFactTime unknown
GPT 5.5 achieved a score of 87% on the TerminalBench 2.0 benchmark, significantly leading and surpassing Anthropic's yet-to-be-released Mythos model.
1
Sources
75%
Confidence
Medium-term (~90 days)
Relevance
5/31/2026
First Seen
Valid until: 8/29/2026(expired)
Sources
Related Entities
Related Claims
UnverifiedGPT 5.5 leads on TerminalBench 2.0 with a score of 87%, surpassing even Anthropic's unreleased Mythos model84% similarUnverifiedIn the DeepSWE benchmark, GPT 5.5 tops the leaderboard with a pass rate of approximately 70%, leading Opus 4.7 by more than 15 percentage points.80% similarUnverifiedGPT-5 shows significantly improved performance over previous-generation models on mainstream programming benchmarks such as HumanEval and SWE-bench80% similarVerifiedGPT-5.4 achieved 57.7% accuracy on SWE-Bench Pro, surpassing GPT-5.3-Codex's 56.8%.79% similar
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