# Claude 2.1 vs Molmo 2 8b

> Molmo 2 8b is the stronger model overall, scoring 39.1 to 25.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-2-1-vs-molmo-2-8b
- Last updated: 2026-10-12
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where Molmo 2 8b leads 25.6 to 21.4.
- Molmo 2 8b has downloadable open weights; the other is API-only.

## Snapshot

| | Claude 2.1 | Molmo 2 8b |
|---|---|---|
| Provider | Anthropic | Allen Institute for AI (Ai2) |
| Noometry Index | 25.2 | 39.1 |
| Rank | 345 | 174 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Open |

## Coding

- Claude 2.1: 26.2 (#327)
- Molmo 2 8b: —

| Benchmark | Claude 2.1 | Molmo 2 8b |
|---|---|---|
| WeirdML | 7.1% | — |

## Reasoning

- Claude 2.1: 21.4 (#221)
- Molmo 2 8b: 25.6 (#146)

| Benchmark | Claude 2.1 | Molmo 2 8b |
|---|---|---|
| LMArena Hard Prompts | — | 1287 |
| DTBench | 51% | — |
| Epoch Capabilities Index | 119.27 | — |
| ForecastBench | 54.2 | — |

## Math

- Claude 2.1: 10.2 (#315)
- Molmo 2 8b: —

| Benchmark | Claude 2.1 | Molmo 2 8b |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | — |

## Knowledge

- Claude 2.1: 15.4 (#292)
- Molmo 2 8b: —

| Benchmark | Claude 2.1 | Molmo 2 8b |
|---|---|---|
| GPQA Diamond | 33% | — |
| MMLU | 73.5% | — |

## Multimodal

- Claude 2.1: —
- Molmo 2 8b: 30.2 (#112)

| Benchmark | Claude 2.1 | Molmo 2 8b |
|---|---|---|
| LMArena Vision | — | 1081 |

## Multilingual

- Claude 2.1: —
- Molmo 2 8b: 42.7 (#190)

| Benchmark | Claude 2.1 | Molmo 2 8b |
|---|---|---|
| LMArena Non-English | — | 1276 |

## Instruction Following

- Claude 2.1: —
- Molmo 2 8b: 67.0 (#201)

| Benchmark | Claude 2.1 | Molmo 2 8b |
|---|---|---|
| LMArena Instruction Following | — | 1270 |

## Writing & Preference

- Claude 2.1: —
- Molmo 2 8b: 49.4 (#191)

| Benchmark | Claude 2.1 | Molmo 2 8b |
|---|---|---|
| LMArena Text | — | 1288 |

## FAQ

### Is Claude 2.1 better than Molmo 2 8b?

Molmo 2 8b is the stronger model overall, scoring 39.1 to 25.2 on the Noometry Index.

### How many benchmarks do Claude 2.1 and Molmo 2 8b share?

0 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and Molmo 2 8b has 5.