# Gemma 2 9B vs Gemma 2B

> Gemma 2B is the stronger model overall, scoring 29.6 to 25.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemma-2-9b-vs-gemma-2b
- Last updated: 2026-10-11
- Shared benchmarks: 16

## Summary

- They share 16 benchmarks with published results for both. Gemma 2 9B scores higher in 5 categories and Gemma 2B in 2 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in math, where Gemma 2B leads 30.0 to 9.9.

## Snapshot

| | Gemma 2 9B | Gemma 2B |
|---|---|---|
| Provider | Google | Google |
| Noometry Index | 25.9 | 29.6 |
| Rank | 341 | 307 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Open | Open |

## Coding

- Gemma 2 9B: 29.4 (#304)
- Gemma 2B: 29.4 (#305)

| Benchmark | Gemma 2 9B | Gemma 2B |
|---|---|---|
| LMArena Coding | 1173 | 1010 |
| BigCodeBench Instruct | 34.7% | — |
| LiveBench Coding | 22.5% | — |
| BigCodeBench Complete | 40.6% | — |
| HumanEval+ | — | 20.7% |
| MBPP+ | — | 34.1% |

## Reasoning

- Gemma 2 9B: 15.9 (#309)
- Gemma 2B: 18.8 (#275)

| Benchmark | Gemma 2 9B | Gemma 2B |
|---|---|---|
| LMArena Hard Prompts | 1171 | 989 |
| Epoch Capabilities Index | 119.83 | 94.2 |
| PIQA | 83.7% | 77.3% |
| LiveBench Reasoning | 15.2% | — |
| LiveBench Data Analysis | 36.4% | — |
| BIG-Bench Hard | — | 35.2% |
| HellaSwag | — | 71.4% |
| LiveBench | 28.7% | — |
| WinoGrande | — | 65.4% |

## Math

- Gemma 2 9B: 9.9 (#318)
- Gemma 2B: 30.0 (#239)

| Benchmark | Gemma 2 9B | Gemma 2B |
|---|---|---|
| LMArena Math | 1183 | 1009 |
| GSM8K | 84.9% | 17.7% |
| OTIS Mock AIME 2024-2025 | 0.6% | — |
| LiveBench Math | 19.8% | — |
| MATH Level 5 | 21% | — |

## Knowledge

- Gemma 2 9B: 9.7 (#305)
- Gemma 2B: —

| Benchmark | Gemma 2 9B | Gemma 2B |
|---|---|---|
| BoolQ | 85.7% | 69.4% |
| MMLU | 72.1% | 42.3% |
| GPQA Diamond | 27.5% | — |
| LMArena Expert | 1147 | — |
| ARC (AI2) Challenge | — | 42.1% |
| TriviaQA | — | 53.2% |

## Multilingual

- Gemma 2 9B: 36.6 (#238)
- Gemma 2B: 23.0 (#294)

| Benchmark | Gemma 2 9B | Gemma 2B |
|---|---|---|
| LMArena Non-English | 1188 | 958 |
| LMArena Chinese | 1185 | 986 |
| LMArena Russian | 1200 | 937 |
| LMArena French | 1190 | — |
| LMArena German | 1186 | — |
| LMArena Japanese | 1144 | — |
| LMArena Korean | 1137 | — |
| LMArena Spanish | 1200 | — |

## Instruction Following

- Gemma 2 9B: 57.6 (#269)
- Gemma 2B: 48.5 (#302)

| Benchmark | Gemma 2 9B | Gemma 2B |
|---|---|---|
| LMArena Instruction Following | 1178 | 970 |
| LiveBench Instruction Following | 52.6% | — |

## Long Context

- Gemma 2 9B: 36.3 (#233)
- Gemma 2B: 29.9 (#291)

| Benchmark | Gemma 2 9B | Gemma 2B |
|---|---|---|
| LMArena Longer Query | 1197 | 981 |

## Writing & Preference

- Gemma 2 9B: 32.1 (#281)
- Gemma 2B: 24.0 (#308)

| Benchmark | Gemma 2 9B | Gemma 2B |
|---|---|---|
| LMArena Text | 1207 | 1002 |
| LMArena Creative Writing | 1206 | 987 |
| LMArena Multi-Turn | 1193 | 945 |
| EQ-Bench Creative Writing | 841 | — |
| LiveBench Language | 25.5% | — |

## FAQ

### Is Gemma 2 9B better than Gemma 2B?

Gemma 2B is the stronger model overall, scoring 29.6 to 25.9 on the Noometry Index.

### Is Gemma 2 9B or Gemma 2B better for coding?

They score almost the same on coding (29.4 vs 29.4); test both on your own repository before choosing.

### How many benchmarks do Gemma 2 9B and Gemma 2B share?

16 benchmarks have published results for both models. Gemma 2 9B has 35 scored results on Noometry and Gemma 2B has 23.