GPT-5.1 Instant
GPT-5.1 Instant is the next iteration of GPT-5, designed to be more conversational than earlier chat models. It features improved instruction following and an adaptive reasoning capability that lets it decide when to think before responding. GPT-5.1 Instant offers clearer and more engaging interactions, reducing jargon and enhancing user comprehension. It demonstrates significant improvements in coding tasks, making it a valuable tool for developers. GPT-5.1 Auto routes each query to the model best suited for it, so users typically don't need to choose a model manually.
Benchmark results
| Benchmark | Score | Tags | Source |
|---|---|---|---|
| AIME 2025 | 94.0% | self-reported llm-stats | link → |
| BrowseComp Long Context 128k | 90.0% | self-reported llm-stats | link → |
| FrontierMath | 26.7% | self-reported llm-stats | link → |
| GPQA | 88.1% | self-reported llm-stats | link → |
| MMMU | 85.4% | self-reported llm-stats | link → |
| SWE-Bench Verified | 76.3% | self-reported llm-stats | link → |
| Tau2 Airline | 67.0% | self-reported llm-stats | link → |
| Tau2 Retail | 77.9% | self-reported llm-stats | link → |
| Tau2 Telecom | 95.6% | self-reported llm-stats | link → |