# Molmo 2 8b vs Sonar

> Molmo 2 8b and Sonar score almost the same on the Noometry Index (39.1 vs 38.5), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/molmo-2-8b-vs-sonar
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

- The widest gap is in instruction following, where Sonar leads 71.4 to 67.0.
- Molmo 2 8b has downloadable open weights; the other is API-only.

## Snapshot

| | Molmo 2 8b | Sonar |
|---|---|---|
| Provider | Allen Institute for AI (Ai2) | Perplexity |
| Noometry Index | 39.1 | 38.5 |
| Rank | 174 | 187 |
| Context | — | 128K |
| Input $/M | — | $1 |
| Output $/M | — | $1 |
| Weights | Open | Proprietary |

## Coding

- Molmo 2 8b: —
- Sonar: 35.7 (#221)

| Benchmark | Molmo 2 8b | Sonar |
|---|---|---|
| LiveBench Coding | — | 35.1% |

## Reasoning

- Molmo 2 8b: 25.6 (#146)
- Sonar: 21.1 (#227)

| Benchmark | Molmo 2 8b | Sonar |
|---|---|---|
| LiveBench Reasoning | — | 46.3% |
| LMArena Hard Prompts | 1287 | — |
| LiveBench Data Analysis | — | 37.9% |
| LiveBench | — | 46.9% |

## Math

- Molmo 2 8b: —
- Sonar: 33.7 (#200)

| Benchmark | Molmo 2 8b | Sonar |
|---|---|---|
| LiveBench Math | — | 41.6% |

## Multimodal

- Molmo 2 8b: 30.2 (#112)
- Sonar: —

| Benchmark | Molmo 2 8b | Sonar |
|---|---|---|
| LMArena Vision | 1081 | — |

## Multilingual

- Molmo 2 8b: 42.7 (#190)
- Sonar: —

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

## Instruction Following

- Molmo 2 8b: 67.0 (#201)
- Sonar: 71.4 (#150)

| Benchmark | Molmo 2 8b | Sonar |
|---|---|---|
| LiveBench Instruction Following | — | 76.2% |
| LMArena Instruction Following | 1270 | — |

## Writing & Preference

- Molmo 2 8b: 49.4 (#191)
- Sonar: 52.6 (#167)

| Benchmark | Molmo 2 8b | Sonar |
|---|---|---|
| LMArena Text | 1288 | — |
| LiveBench Language | — | 44.1% |

## FAQ

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

Molmo 2 8b and Sonar score almost the same on the Noometry Index (39.1 vs 38.5), so choose on price, context window or the category you care about most.

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

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