GPT-5.1 Instant: benchmark results
OpenAI's fast GPT-5.1 Instant tier for low-latency chat. Provider: OpenAI. Released 2025-11-12. Access: API.
Unified ELO 1590 ± 1, rank #293 of 1392 rated models, from 13 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| ZeroEval GPQA Diamond | 88.1 | GPQA Diamond Score | 84.2 |
| LLM Stats Score | 36.69 | LLM Stats Score (conservative rating) | 80.3 |
| SEAL - Fortress | 30.36 | Score | 57.1 |
| SEAL - MASK | 63.33 | Score | 53 |
| LLM Stats (BrowseComp Long Context 128k) | 90 | Score (%) | 37.5 |
| SEAL - MultiChallenge | 51.23 | Score | 27.6 |
| SEAL - TutorBench | 49.08 | Score | 26.9 |
| SEAL - Humanity's Last Exam | 6.8 | Score | 24 |
| SEAL - Humanity's Last Exam (Text Only) | 6.49 | Score | 23.3 |
| SEAL - VISTA | 34.87 | Score | 21 |
| EnigmaEval | 1.94 | Score (self-reported) | 18 |
| SEAL - MultiNRC | 18.29 | Score | 16.3 |
Interactive version: theaggregate.ai/model?slug=gpt-5-1-instant · How It Works · Data refreshed daily, snapshot 2026-09-05.