Model comparison
GPT-5.6 Luna vs o1-mini
GPT-5.6 Luna is the stronger model overall, scoring 54.6 to 34.0 on the Noometry Index.
Last verified . 24 shared benchmarks.
Summary
- They share 24 benchmarks with published results for both. GPT-5.6 Luna scores higher in 9 categories and o1-mini in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-5.6 Luna leads 77.7 to 35.4.
- The biggest single-benchmark swing is ARC-AGI-1: 88% for GPT-5.6 Luna and 14% for o1-mini.
Side by side
| GPT-5.6 Luna | o1-mini | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 54.6 | 34.0 |
| Released | 2026-07-09 | 2024-09-12 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.20 | — |
| Output $ / M tokens | $1.20 | — |
| Results tracked | 52 | 39 |
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Category by category
Coding GPT-5.6 Luna leads
GPT-5.6 Luna: 54.5 (#28), o1-mini: 35.5 (#224)
| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| WeirdML | 60.9% | 36.3% |
| LMArena Coding | 1466 | 1362 |
| DeepSWE | 67.2% | — |
| FrontierCode | 39.8% | — |
| Aider Polyglot | — | 32.9% |
| CursorBench | 35.9% | — |
| LMArena WebDev | 1519 | — |
| SciCode | 53.6% | — |
| LiveBench Coding | — | 48% |
| ALE-Bench | 1,667 | — |
| HumanEval+ | — | 89% |
| MBPP+ | — | 78.8% |
Agentic & Tool Use GPT-5.6 Luna leads
GPT-5.6 Luna: 34.4 (#45), o1-mini: 24.6 (#118)
| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| APEX-Agents | 43% | — |
| Cybench | — | 10% |
| BALROG | 45.6% | — |
| GDP.pdf | 22.7% | — |
| Vending-Bench 2 | 4,095 | — |
Reasoning GPT-5.6 Luna leads
GPT-5.6 Luna: 47.6 (#43), o1-mini: 8.8 (#346)
| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| ARC-AGI-2 | 59.5% | 0.8% |
| SimpleBench | 46.8% | 18.1% |
| ARC-AGI-1 | 88% | 14% |
| LMArena Hard Prompts | 1451 | 1333 |
| Epoch Capabilities Index | 156.39 | 135.82 |
| Kagi LLM Benchmark | 49.1% | — |
| NYT Connections (extended) | 69.4% | — |
| CritPt | 20.6% | — |
| Chess Puzzles | 40% | — |
| LiveBench Reasoning | — | 72.3% |
| Mystery Game Puzzles | 21% | — |
| DTBench | 89.1% | — |
| LiveBench Data Analysis | — | 57.9% |
| LMCA | 48.5% | — |
| Surface Evolver Bench | 61.9% | — |
| LiveBench | — | 57.8% |
Math GPT-5.6 Luna leads
GPT-5.6 Luna: 77.7 (#14), o1-mini: 35.4 (#186)
| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 98.3% | 46.9% |
| LMArena Math | 1458 | 1358 |
| FrontierMath (Tiers 1-3) | 82.1% | — |
| FrontierMath Tier 4 | 61% | — |
| ProofBench | 60% | — |
| LiveBench Math | — | 62% |
| MATH Level 5 | — | 89.2% |
| FrontierMath (Feb 2025 set) | — | 1.7% |
Knowledge GPT-5.6 Luna leads
GPT-5.6 Luna: 58.5 (#34), o1-mini: 34.9 (#192)
| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| GPQA Diamond | 91.6% | 62.4% |
| LMArena Expert | 1478 | 1316 |
| SimpleQA Verified | 41% | — |
| Confabulations | — | 18.6% |
Multimodal Not comparable
GPT-5.6 Luna: 42.7 (#28), o1-mini: —
| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| LMArena Vision | 1258 | — |
| Blueprint-Bench 2 | 22.6% | — |
| Furniture Assembly | 42.5% | — |
| LMArena Document | 1457 | — |
Multilingual GPT-5.6 Luna leads
GPT-5.6 Luna: 52.8 (#78), o1-mini: 43.6 (#182)
| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| LMArena Non-English | 1417 | 1289 |
| LMArena Chinese | 1470 | 1314 |
| LMArena French | 1456 | 1293 |
| LMArena German | 1454 | 1278 |
| LMArena Japanese | 1411 | 1245 |
| LMArena Korean | 1415 | 1223 |
| LMArena Russian | 1428 | 1283 |
| LMArena Spanish | 1448 | 1303 |
Instruction Following GPT-5.6 Luna leads
GPT-5.6 Luna: 75.6 (#57), o1-mini: 66.7 (#206)
| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| LMArena Instruction Following | 1437 | 1304 |
| LiveBench Instruction Following | — | 65.4% |
Long Context GPT-5.6 Luna leads
GPT-5.6 Luna: 43.9 (#82), o1-mini: 40.1 (#161)
| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| LMArena Longer Query | 1436 | 1320 |
Writing & Preference GPT-5.6 Luna leads
GPT-5.6 Luna: 68.0 (#29), o1-mini: 48.4 (#202)
| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| LMArena Text | 1431 | 1317 |
| LMArena Creative Writing | 1396 | 1244 |
| LMArena Multi-Turn | 1434 | 1314 |
| Short-Story Creative Writing | — | 64.9% |
| EQ-Bench Creative Writing | 1829 | — |
| EQ-Bench 4 | 1156 | — |
| LiveBench Language | — | 40.9% |
Frequently asked questions
Is GPT-5.6 Luna better than o1-mini?
GPT-5.6 Luna is the stronger model overall, scoring 54.6 to 34.0 on the Noometry Index.
Is GPT-5.6 Luna or o1-mini better for coding?
GPT-5.6 Luna scores higher on coding benchmarks: 54.5 versus 35.5 in the Noometry coding category.
How many benchmarks do GPT-5.6 Luna and o1-mini share?
24 benchmarks have published results for both models. GPT-5.6 Luna has 52 scored results on Noometry and o1-mini has 39.