Expert-SWE (OpenAI)
Not in model cards
Agents do long-horizon coding tasks with a median estimated human completion time of 20 hours.
OpenAI calls it an internal frontier eval. The GPT-5.5 post (2026-04-23) reports 73.1% for GPT-5.5 and 68.5% for GPT-5.4.
- Level
- Expert Specialists with years of training, often over hours of work
- Scored
- Checked automatically A program checks the result against an answer key, unit tests or the expected final state.
- Answers
- Agent task Many steps in a terminal, browser, desktop, app, game or robot.
No scores here yet
No lab, leaderboard or Epoch AI run has reported a score for Expert-SWE (OpenAI) yet.
No lab model card reports it yet
We read the headline results of 479 launch posts from 51 labs, and none of them list this benchmark.
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