OpenAI o3 SWE-Bench Score: What Engineers Aren’t Told
OpenAI o3 crossed 90% on SWE-Bench Verified, the benchmark every developer uses to compare coding agents. The problem: OpenAI publicly declared that same benchmark contaminated and unreliable on February 22, 2026, six weeks before the score surfaced. This analysis breaks down what that contradiction actually means for engineering teams evaluating autonomous coding agents in 2026.
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