# GPT-6 Luna vs Molmo 2 8b

> GPT-6 Luna is the stronger model overall, scoring 45.1 to 38.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-6-luna-vs-molmo-2-8b
- Last updated: 2026-10-10
- Shared benchmarks: 4

## Summary

- They share 4 benchmarks with published results for both. GPT-6 Luna scores higher in 5 categories and Molmo 2 8b in 0 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in multimodal, where GPT-6 Luna leads 42.0 to 29.5.
- Molmo 2 8b has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-6 Luna | Molmo 2 8b |
|---|---|---|
| Provider | OpenAI | Allen Institute for AI (Ai2) |
| Noometry Index | 45.1 | 38.7 |
| Rank | 65 | 170 |
| Context | 1.05M | — |
| Input $/M | $0.10 | — |
| Output $/M | $0.50 | — |
| Weights | Proprietary | Open |

## Coding

- GPT-6 Luna: 54.7 (#24)
- Molmo 2 8b: —

| Benchmark | GPT-6 Luna | Molmo 2 8b |
|---|---|---|
| DeepSWE | 66.6% | — |
| FrontierCode | 42.4% | — |
| LMArena WebDev | 1583 | — |
| LMArena Coding | 1448 | — |

## Reasoning

- GPT-6 Luna: 31.7 (#68)
- Molmo 2 8b: 24.5 (#146)

| Benchmark | GPT-6 Luna | Molmo 2 8b |
|---|---|---|
| LMArena Hard Prompts | 1415 | 1288 |
| NYT Connections (extended) | 68.7% | — |

## Math

- GPT-6 Luna: 35.6 (#140)
- Molmo 2 8b: —

| Benchmark | GPT-6 Luna | Molmo 2 8b |
|---|---|---|
| LMArena Math | 1396 | — |

## Knowledge

- GPT-6 Luna: 40.1 (#110)
- Molmo 2 8b: —

| Benchmark | GPT-6 Luna | Molmo 2 8b |
|---|---|---|
| LMArena Expert | 1458 | — |

## Multimodal

- GPT-6 Luna: 42.0 (#27)
- Molmo 2 8b: 29.5 (#106)

| Benchmark | GPT-6 Luna | Molmo 2 8b |
|---|---|---|
| LMArena Vision | — | 1081 |
| Furniture Assembly | 44.2% | — |

## Multilingual

- GPT-6 Luna: 51.0 (#111)
- Molmo 2 8b: 42.8 (#186)

| Benchmark | GPT-6 Luna | Molmo 2 8b |
|---|---|---|
| LMArena Non-English | 1390 | 1275 |
| LMArena Chinese | 1425 | — |
| LMArena Russian | 1392 | — |
| LMArena Spanish | 1416 | — |

## Instruction Following

- GPT-6 Luna: 74.7 (#85)
- Molmo 2 8b: 67.2 (#196)

| Benchmark | GPT-6 Luna | Molmo 2 8b |
|---|---|---|
| LMArena Instruction Following | 1414 | 1270 |

## Long Context

- GPT-6 Luna: 43.3 (#95)
- Molmo 2 8b: —

| Benchmark | GPT-6 Luna | Molmo 2 8b |
|---|---|---|
| LMArena Longer Query | 1417 | — |

## Writing & Preference

- GPT-6 Luna: 58.4 (#115)
- Molmo 2 8b: 49.5 (#187)

| Benchmark | GPT-6 Luna | Molmo 2 8b |
|---|---|---|
| LMArena Text | 1392 | 1288 |
| LMArena Creative Writing | 1357 | — |
| LMArena Multi-Turn | 1400 | — |

## FAQ

### Is GPT-6 Luna better than Molmo 2 8b?

GPT-6 Luna is the stronger model overall, scoring 45.1 to 38.7 on the Noometry Index.

### How many benchmarks do GPT-6 Luna and Molmo 2 8b share?

4 benchmarks have published results for both models. GPT-6 Luna has 18 scored results on Noometry and Molmo 2 8b has 5.