# Granite 4.2 3b vs Sonar

> Granite 4.2 3b and Sonar score almost the same on the Noometry Index (39.4 vs 38.5), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/granite-4-2-3b-vs-sonar
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in writing & preference, where Sonar leads 52.6 to 47.2.
- Granite 4.2 3b has downloadable open weights; the other is API-only.

## Snapshot

| | Granite 4.2 3b | Sonar |
|---|---|---|
| Provider | IBM | Perplexity |
| Noometry Index | 39.4 | 38.5 |
| Rank | 169 | 187 |
| Context | — | 128K |
| Input $/M | — | $1 |
| Output $/M | — | $1 |
| Weights | Open | Proprietary |

## Coding

- Granite 4.2 3b: 40.0 (#151)
- Sonar: 35.7 (#221)

| Benchmark | Granite 4.2 3b | Sonar |
|---|---|---|
| LiveBench Coding | — | 35.1% |
| LMArena Coding | 1361 | — |

## Reasoning

- Granite 4.2 3b: 26.0 (#138)
- Sonar: 21.1 (#227)

| Benchmark | Granite 4.2 3b | Sonar |
|---|---|---|
| LiveBench Reasoning | — | 46.3% |
| LMArena Hard Prompts | 1306 | — |
| LiveBench Data Analysis | — | 37.9% |
| LiveBench | — | 46.9% |

## Math

- Granite 4.2 3b: —
- Sonar: 33.7 (#200)

| Benchmark | Granite 4.2 3b | Sonar |
|---|---|---|
| LiveBench Math | — | 41.6% |

## Knowledge

- Granite 4.2 3b: 36.3 (#171)
- Sonar: —

| Benchmark | Granite 4.2 3b | Sonar |
|---|---|---|
| LMArena Expert | 1315 | — |

## Multilingual

- Granite 4.2 3b: 42.1 (#198)
- Sonar: —

| Benchmark | Granite 4.2 3b | Sonar |
|---|---|---|
| LMArena Non-English | 1268 | — |
| LMArena Chinese | 1269 | — |
| LMArena Russian | 1249 | — |

## Instruction Following

- Granite 4.2 3b: 67.1 (#200)
- Sonar: 71.4 (#150)

| Benchmark | Granite 4.2 3b | Sonar |
|---|---|---|
| LiveBench Instruction Following | — | 76.2% |
| LMArena Instruction Following | 1273 | — |

## Long Context

- Granite 4.2 3b: 39.2 (#185)
- Sonar: —

| Benchmark | Granite 4.2 3b | Sonar |
|---|---|---|
| LMArena Longer Query | 1291 | — |

## Writing & Preference

- Granite 4.2 3b: 47.2 (#212)
- Sonar: 52.6 (#167)

| Benchmark | Granite 4.2 3b | Sonar |
|---|---|---|
| LMArena Text | 1293 | — |
| LMArena Creative Writing | 1205 | — |
| LMArena Multi-Turn | 1290 | — |
| LiveBench Language | — | 44.1% |

## FAQ

### Is Granite 4.2 3b better than Sonar?

Granite 4.2 3b and Sonar score almost the same on the Noometry Index (39.4 vs 38.5), so choose on price, context window or the category you care about most.

### Is Granite 4.2 3b or Sonar better for coding?

Granite 4.2 3b scores higher on coding benchmarks: 40.0 versus 35.7 in the Noometry coding category.

### How many benchmarks do Granite 4.2 3b and Sonar share?

0 benchmarks have published results for both models. Granite 4.2 3b has 11 scored results on Noometry and Sonar has 7.