Model comparison
GPT-5.1 vs o1-mini
GPT-5.1 is the stronger model overall, scoring 49.0 to 34.0 on the Noometry Index.
Last verified . 32 shared benchmarks.
Summary
- They share 32 benchmarks with published results for both. GPT-5.1 scores higher in 9 categories and o1-mini in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.1 leads 39.8 to 8.8.
- The biggest single-benchmark swing is ARC-AGI-1: 72.8% for GPT-5.1 and 14% for o1-mini.
Side by side
| GPT-5.1 | o1-mini | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 49.0 | 34.0 |
| Released | 2025-11-13 | 2024-09-12 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $1.25 | — |
| Output $ / M tokens | $10 | — |
| Results tracked | 63 | 39 |
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Category by category
Coding GPT-5.1 leads
GPT-5.1: 46.4 (#66), o1-mini: 35.5 (#224)
| Benchmark | GPT-5.1 | o1-mini |
|---|---|---|
| WeirdML | 60.8% | 36.3% |
| LiveBench Coding | 72.5% | 48% |
| LMArena Coding | 1454 | 1362 |
| SWE-bench Verified | 68% | — |
| SWE-bench Verified (bash only) | 66% | — |
| Aider Polyglot | — | 32.9% |
| LMArena WebDev | 1395 | — |
| SciCode | 43.3% | — |
| GSO | 13.7% | — |
| ALE-Bench | 1,192 | — |
| HumanEval+ | — | 89% |
| MBPP+ | — | 78.8% |
Agentic & Tool Use GPT-5.1 leads
GPT-5.1: 32.7 (#60), o1-mini: 24.6 (#118)
| Benchmark | GPT-5.1 | o1-mini |
|---|---|---|
| Terminal-Bench | 47.6% | — |
| Cybench | — | 10% |
| DeepResearch Bench | 42.8% | — |
| LMArena Search | 1199 | — |
| Vending-Bench 2 | 1,473 | — |
Reasoning GPT-5.1 leads
GPT-5.1: 39.8 (#58), o1-mini: 8.8 (#346)
| Benchmark | GPT-5.1 | o1-mini |
|---|---|---|
| ARC-AGI-2 | 17.6% | 0.8% |
| SimpleBench | 53.2% | 18.1% |
| ARC-AGI-1 | 72.8% | 14% |
| LiveBench Reasoning | 95.8% | 72.3% |
| LMArena Hard Prompts | 1457 | 1333 |
| LiveBench Data Analysis | 72.1% | 57.9% |
| Epoch Capabilities Index | 149.64 | 135.82 |
| LiveBench | 78.8% | 57.8% |
| CritPt | 4.9% | — |
| Chess Puzzles | 32% | — |
| EnigmaEval | 11.2% | — |
| Mystery Game Puzzles | 19% | — |
| DTBench | 90.1% | — |
| LMCA | 43.9% | — |
| ForecastBench | 58.1 | — |
Math GPT-5.1 leads
GPT-5.1: 52.2 (#51), o1-mini: 35.4 (#186)
| Benchmark | GPT-5.1 | o1-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 88.6% | 46.9% |
| LiveBench Math | 94.5% | 62% |
| LMArena Math | 1447 | 1358 |
| FrontierMath (Feb 2025 set) | 31% | 1.7% |
| Omni-MATH | 46.4% | — |
| MATH Level 5 | — | 89.2% |
| FrontierMath Tier 4 (v1) | 12.5% | — |
Knowledge GPT-5.1 leads
GPT-5.1: 50.6 (#71), o1-mini: 34.9 (#192)
| Benchmark | GPT-5.1 | o1-mini |
|---|---|---|
| GPQA Diamond | 87.6% | 62.4% |
| LMArena Expert | 1470 | 1316 |
| Humanity's Last Exam | 23.7% | — |
| SimpleQA Verified | 48% | — |
| MMLU-Pro | 57.9% | — |
| Confabulations | — | 18.6% |
| Vectara Hallucination Rate | 10.9% | — |
| GPQA (HELM) | 44.2% | — |
Multimodal Not comparable
GPT-5.1: 44.8 (#19), o1-mini: —
| Benchmark | GPT-5.1 | o1-mini |
|---|---|---|
| LMArena Vision | 1250 | — |
| VPCT | 58.7% | — |
| LMArena Document | 1403 | — |
Multilingual GPT-5.1 leads
GPT-5.1: 53.8 (#56), o1-mini: 43.6 (#182)
| Benchmark | GPT-5.1 | o1-mini |
|---|---|---|
| LMArena Non-English | 1431 | 1289 |
| LMArena Chinese | 1495 | 1314 |
| LMArena French | 1450 | 1293 |
| LMArena German | 1438 | 1278 |
| LMArena Japanese | 1453 | 1245 |
| LMArena Korean | 1401 | 1223 |
| LMArena Russian | 1435 | 1283 |
| LMArena Spanish | 1433 | 1303 |
Instruction Following GPT-5.1 leads
GPT-5.1: 83.9 (#1), o1-mini: 66.7 (#206)
| Benchmark | GPT-5.1 | o1-mini |
|---|---|---|
| LiveBench Instruction Following | 93.3% | 65.4% |
| LMArena Instruction Following | 1443 | 1304 |
| IFEval | 93.5% | — |
Long Context GPT-5.1 leads
GPT-5.1: 47.6 (#14), o1-mini: 40.1 (#161)
| Benchmark | GPT-5.1 | o1-mini |
|---|---|---|
| LMArena Longer Query | 1447 | 1320 |
| CL-bench | 23.7% | — |
| CL-bench Life | 17.3% | — |
Writing & Preference GPT-5.1 leads
GPT-5.1: 64.5 (#55), o1-mini: 48.4 (#202)
| Benchmark | GPT-5.1 | o1-mini |
|---|---|---|
| LMArena Text | 1443 | 1317 |
| LMArena Creative Writing | 1427 | 1244 |
| LMArena Multi-Turn | 1450 | 1314 |
| LiveBench Language | 80.2% | 40.9% |
| Short-Story Creative Writing | — | 64.9% |
| WildBench | 86.3% | — |
Frequently asked questions
Is GPT-5.1 better than o1-mini?
GPT-5.1 is the stronger model overall, scoring 49.0 to 34.0 on the Noometry Index.
Is GPT-5.1 or o1-mini better for coding?
GPT-5.1 scores higher on coding benchmarks: 46.4 versus 35.5 in the Noometry coding category.
How many benchmarks do GPT-5.1 and o1-mini share?
32 benchmarks have published results for both models. GPT-5.1 has 63 scored results on Noometry and o1-mini has 39.