GPT 5.4
22nd on DeepSWE v1.1 Best (xhigh) at 51.8%.
OpenAI · Proprietary · Fetched 2026-10-10
Benchmark scores
Boards older than 90 days are not counted as recommendationsBenchmarkSettingScoreRankCostAs of
Use it or not
Why
- Still has a checkable long-horizon engineering score on DeepSWE.
When not
- Well behind the GPT 5.5 / 5.6 rows on that board.