# Molmo 2 8b vs Yi-1.5-34B

> Molmo 2 8b is the stronger model overall, scoring 38.7 to 30.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/molmo-2-8b-vs-yi-1-5-34b
- Last updated: 2026-10-10
- Shared benchmarks: 4

## Summary

- They share 4 benchmarks with published results for both. Molmo 2 8b scores higher in 4 categories and Yi-1.5-34B in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Molmo 2 8b leads 49.5 to 37.6.

## Snapshot

| | Molmo 2 8b | Yi-1.5-34B |
|---|---|---|
| Provider | Allen Institute for AI (Ai2) | 01.AI |
| Noometry Index | 38.7 | 30.2 |
| Rank | 170 | 286 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Open | Open |

## Coding

- Molmo 2 8b: —
- Yi-1.5-34B: 31.9 (#267)

| Benchmark | Molmo 2 8b | Yi-1.5-34B |
|---|---|---|
| BigCodeBench Instruct | — | 33.9% |
| LMArena Coding | — | 1169 |
| BigCodeBench Complete | — | 43.8% |

## Reasoning

- Molmo 2 8b: 24.5 (#146)
- Yi-1.5-34B: 21.5 (#195)

| Benchmark | Molmo 2 8b | Yi-1.5-34B |
|---|---|---|
| LMArena Hard Prompts | 1288 | 1160 |

## Math

- Molmo 2 8b: —
- Yi-1.5-34B: 25.3 (#248)

| Benchmark | Molmo 2 8b | Yi-1.5-34B |
|---|---|---|
| LMArena Math | — | 1182 |
| MATH Level 5 | — | 25.5% |

## Knowledge

- Molmo 2 8b: —
- Yi-1.5-34B: 14.8 (#290)

| Benchmark | Molmo 2 8b | Yi-1.5-34B |
|---|---|---|
| GPQA Diamond | — | 32% |
| LMArena Expert | — | 1144 |

## Multimodal

- Molmo 2 8b: 29.5 (#106)
- Yi-1.5-34B: —

| Benchmark | Molmo 2 8b | Yi-1.5-34B |
|---|---|---|
| LMArena Vision | 1081 | — |

## Multilingual

- Molmo 2 8b: 42.8 (#186)
- Yi-1.5-34B: 32.5 (#251)

| Benchmark | Molmo 2 8b | Yi-1.5-34B |
|---|---|---|
| LMArena Non-English | 1275 | 1121 |
| LMArena Chinese | — | 1213 |
| LMArena French | — | 1155 |
| LMArena German | — | 1111 |
| LMArena Japanese | — | 1021 |
| LMArena Korean | — | 1005 |
| LMArena Russian | — | 1091 |
| LMArena Spanish | — | 1120 |

## Instruction Following

- Molmo 2 8b: 67.2 (#196)
- Yi-1.5-34B: 59.4 (#252)

| Benchmark | Molmo 2 8b | Yi-1.5-34B |
|---|---|---|
| LMArena Instruction Following | 1270 | 1139 |

## Long Context

- Molmo 2 8b: —
- Yi-1.5-34B: 34.6 (#243)

| Benchmark | Molmo 2 8b | Yi-1.5-34B |
|---|---|---|
| LMArena Longer Query | — | 1144 |

## Writing & Preference

- Molmo 2 8b: 49.5 (#187)
- Yi-1.5-34B: 37.6 (#252)

| Benchmark | Molmo 2 8b | Yi-1.5-34B |
|---|---|---|
| LMArena Text | 1288 | 1173 |
| LMArena Creative Writing | — | 1135 |
| LMArena Multi-Turn | — | 1153 |

## FAQ

### Is Molmo 2 8b better than Yi-1.5-34B?

Molmo 2 8b is the stronger model overall, scoring 38.7 to 30.2 on the Noometry Index.

### How many benchmarks do Molmo 2 8b and Yi-1.5-34B share?

4 benchmarks have published results for both models. Molmo 2 8b has 5 scored results on Noometry and Yi-1.5-34B has 21.