# GPT-5.6 Luna vs o1-mini

> GPT-5.6 Luna is the stronger model overall, scoring 54.7 to 33.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-6-luna-vs-o1-mini
- Last updated: 2026-10-10
- Shared benchmarks: 24

## 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 77.5 to 33.7.
- The biggest single-benchmark swing is ARC-AGI-1: 88% for GPT-5.6 Luna and 14% for o1-mini.

## Snapshot

| | GPT-5.6 Luna | o1-mini |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 54.7 | 33.7 |
| Rank | 24 | 230 |
| Context | 1.05M | — |
| Input $/M | $0.20 | — |
| Output $/M | $1.20 | — |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5.6 Luna: 53.9 (#25)
- o1-mini: 35.1 (#218)

| 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 | 1517 | — |
| SciCode | 53.6% | — |
| LiveBench Coding | — | 48% |
| ALE-Bench | 1,667 | — |
| HumanEval+ | — | 89% |
| MBPP+ | — | 78.8% |

## Agentic & Tool Use

- GPT-5.6 Luna: 35.3 (#37)
- o1-mini: 24.3 (#112)

| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| Cybench | — | 10% |
| BALROG | 45.6% | — |
| GDP.pdf | 22.7% | — |
| Vending-Bench 2 | 4,095 | — |

## Reasoning

- GPT-5.6 Luna: 47.5 (#38)
- o1-mini: 8.9 (#340)

| 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 | 1452 | 1333 |
| Epoch Capabilities Index | 156.32 | 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: 77.5 (#12)
- o1-mini: 33.7 (#168)

| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 98.3% | 46.9% |
| LMArena Math | 1455 | 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: 58.6 (#31)
- o1-mini: 34.8 (#180)

| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| GPQA Diamond | 91.6% | 62.4% |
| LMArena Expert | 1479 | 1316 |
| SimpleQA Verified | 41% | — |
| Confabulations | — | 18.6% |

## Multimodal

- GPT-5.6 Luna: 43.0 (#22)
- o1-mini: —

| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| LMArena Vision | 1259 | — |
| Blueprint-Bench 2 | 22.6% | — |
| Furniture Assembly | 42.5% | — |
| LMArena Document | 1457 | — |

## Multilingual

- GPT-5.6 Luna: 53.0 (#73)
- o1-mini: 43.8 (#177)

| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| LMArena Non-English | 1418 | 1289 |
| LMArena Chinese | 1469 | 1314 |
| LMArena French | 1457 | 1292 |
| LMArena German | 1459 | 1278 |
| LMArena Japanese | 1416 | 1245 |
| LMArena Korean | 1414 | 1223 |
| LMArena Russian | 1428 | 1283 |
| LMArena Spanish | 1445 | 1302 |

## Instruction Following

- GPT-5.6 Luna: 76.0 (#48)
- o1-mini: 67.0 (#200)

| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| LMArena Instruction Following | 1440 | 1304 |
| LiveBench Instruction Following | — | 65.4% |

## Long Context

- GPT-5.6 Luna: 43.9 (#78)
- o1-mini: 40.1 (#156)

| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| LMArena Longer Query | 1437 | 1321 |

## Writing & Preference

- GPT-5.6 Luna: 68.3 (#27)
- o1-mini: 48.6 (#196)

| Benchmark | GPT-5.6 Luna | o1-mini |
|---|---|---|
| LMArena Text | 1432 | 1317 |
| LMArena Creative Writing | 1397 | 1244 |
| LMArena Multi-Turn | 1433 | 1314 |
| Short-Story Creative Writing | — | 64.9% |
| EQ-Bench Creative Writing | 1829 | — |
| EQ-Bench 4 | 1156 | — |
| LiveBench Language | — | 40.9% |

## FAQ

### Is GPT-5.6 Luna better than o1-mini?

GPT-5.6 Luna is the stronger model overall, scoring 54.7 to 33.7 on the Noometry Index.

### Is GPT-5.6 Luna or o1-mini better for coding?

GPT-5.6 Luna scores higher on coding benchmarks: 53.9 versus 35.1 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 51 scored results on Noometry and o1-mini has 39.