# Molmo 2 8b vs o1

> o1 is the stronger model overall, scoring 40.9 to 39.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/molmo-2-8b-vs-o1
- Last updated: 2026-10-11
- Shared benchmarks: 5

## Summary

- They share 5 benchmarks with published results for both. Molmo 2 8b scores higher in 0 categories and o1 in 5 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in instruction following, where o1 leads 74.8 to 67.0.
- Molmo 2 8b has downloadable open weights; the other is API-only.

## Snapshot

| | Molmo 2 8b | o1 |
|---|---|---|
| Provider | Allen Institute for AI (Ai2) | OpenAI |
| Noometry Index | 39.1 | 40.9 |
| Rank | 174 | 143 |
| Context | — | 200K |
| Input $/M | — | $15 |
| Output $/M | — | $60 |
| Weights | Open | Proprietary |

## Coding

- Molmo 2 8b: —
- o1: 46.1 (#70)

| Benchmark | Molmo 2 8b | o1 |
|---|---|---|
| Aider Polyglot | — | 61.7% |
| WeirdML | — | 47.6% |
| LiveBench Coding | — | 69.7% |
| LMArena Coding | — | 1367 |
| CadEval | — | 56% |
| HumanEval+ | — | 89% |
| MBPP+ | — | 80.2% |

## Agentic & Tool Use

- Molmo 2 8b: —
- o1: 24.6 (#117)

| Benchmark | Molmo 2 8b | o1 |
|---|---|---|
| Cybench | — | 10% |
| METR Time Horizons | — | 51.1% |

## Reasoning

- Molmo 2 8b: 25.6 (#146)
- o1: 27.9 (#111)

| Benchmark | Molmo 2 8b | o1 |
|---|---|---|
| LMArena Hard Prompts | 1287 | 1371 |
| SimpleBench | — | 41.7% |
| ARC-AGI-1 | — | 30.7% |
| Chess Puzzles | — | 15% |
| EnigmaEval | — | 5.7% |
| LiveBench Reasoning | — | 91.6% |
| DTBench | — | 74.7% |
| LiveBench Data Analysis | — | 65.5% |
| LMCA | — | 22.3% |
| Epoch Capabilities Index | — | 141.91 |
| LiveBench | — | 75.7% |

## Math

- Molmo 2 8b: —
- o1: 36.1 (#175)

| Benchmark | Molmo 2 8b | o1 |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 14.7% |
| OTIS Mock AIME 2024-2025 | — | 73.3% |
| LiveBench Math | — | 80.3% |
| LMArena Math | — | 1388 |
| MATH Level 5 | — | 94.7% |
| FrontierMath (Feb 2025 set) | — | 9.3% |

## Knowledge

- Molmo 2 8b: —
- o1: 41.5 (#110)

| Benchmark | Molmo 2 8b | o1 |
|---|---|---|
| GPQA Diamond | — | 76.8% |
| Humanity's Last Exam | — | 8% |
| SimpleQA Verified | — | 41.1% |
| Confabulations | — | 11.7% |
| LMArena Expert | — | 1361 |

## Multimodal

- Molmo 2 8b: 30.2 (#112)
- o1: 34.2 (#93)

| Benchmark | Molmo 2 8b | o1 |
|---|---|---|
| LMArena Vision | 1081 | 1168 |
| GeoBench | — | 80% |
| VPCT | — | 37% |
| SpatialViz-Bench | — | 41.4% |

## Multilingual

- Molmo 2 8b: 42.7 (#190)
- o1: 48.6 (#142)

| Benchmark | Molmo 2 8b | o1 |
|---|---|---|
| LMArena Non-English | 1276 | 1358 |
| LMArena Chinese | — | 1394 |
| LMArena French | — | 1344 |
| LMArena German | — | 1337 |
| LMArena Japanese | — | 1346 |
| LMArena Korean | — | 1396 |
| LMArena Russian | — | 1356 |
| LMArena Spanish | — | 1345 |

## Instruction Following

- Molmo 2 8b: 67.0 (#201)
- o1: 74.8 (#86)

| Benchmark | Molmo 2 8b | o1 |
|---|---|---|
| LMArena Instruction Following | 1270 | 1367 |
| LiveBench Instruction Following | — | 81.5% |

## Long Context

- Molmo 2 8b: —
- o1: 50.3 (#9)

| Benchmark | Molmo 2 8b | o1 |
|---|---|---|
| Fiction.LiveBench | — | 83.3% |
| LMArena Longer Query | — | 1378 |

## Writing & Preference

- Molmo 2 8b: 49.4 (#191)
- o1: 55.6 (#144)

| Benchmark | Molmo 2 8b | o1 |
|---|---|---|
| LMArena Text | 1288 | 1366 |
| LMArena Creative Writing | — | 1348 |
| Short-Story Creative Writing | — | 70.2% |
| LMArena Multi-Turn | — | 1369 |
| LiveBench Language | — | 65.4% |

## FAQ

### Is Molmo 2 8b better than o1?

o1 is the stronger model overall, scoring 40.9 to 39.1 on the Noometry Index.

### How many benchmarks do Molmo 2 8b and o1 share?

5 benchmarks have published results for both models. Molmo 2 8b has 5 scored results on Noometry and o1 has 52.