Model comparison
Gemma 4 31B IT vs Molmo 2 8b
Gemma 4 31B IT is the stronger model overall, scoring 43.2 to 38.7 on the Noometry Index.
Last verified . 5 shared benchmarks.
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Allen Institute for AI (Ai2)Summary
- They share 5 benchmarks with published results for both. Gemma 4 31B IT scores higher in 5 categories and Molmo 2 8b in 0 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in multimodal, where Gemma 4 31B IT leads 41.0 to 29.5.
Side by side
| Gemma 4 31B IT | Molmo 2 8b | |
|---|---|---|
| Provider | Allen Institute for AI (Ai2) | |
| Noometry Index | 43.2 | 38.7 |
| Released | 2026-04-02 | — |
| Weights | Open | Open |
| Context window | 262K | — |
| Max output | 33K | — |
| Input $ / M tokens | $0.09 | — |
| Output $ / M tokens | $0.34 | — |
| Results tracked | 35 | 5 |
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Category by category
Coding Not comparable
Gemma 4 31B IT: 41.9 (#98), Molmo 2 8b: —
| Benchmark | Gemma 4 31B IT | Molmo 2 8b |
|---|---|---|
| LMArena WebDev | 1364 | — |
| SciCode | 43.4% | — |
| WeirdML | 52.3% | — |
| LMArena Coding | 1459 | — |
| ALE-Bench | 925.5 | — |
Reasoning Gemma 4 31B IT leads
Gemma 4 31B IT: 26.4 (#119), Molmo 2 8b: 24.5 (#146)
| Benchmark | Gemma 4 31B IT | Molmo 2 8b |
|---|---|---|
| LMArena Hard Prompts | 1448 | 1288 |
| Kagi LLM Benchmark | 63.5% | — |
| NYT Connections (extended) | 70.6% | — |
| CritPt | 1.4% | — |
| Chess Puzzles | 5% | — |
| Thematic Generalization | 53% | — |
| DTBench | 82.7% | — |
| LMCA | 39.3% | — |
| Surface Evolver Bench | 30.6% | — |
| Epoch Capabilities Index | 142.74 | — |
Math Not comparable
Gemma 4 31B IT: 41.3 (#72), Molmo 2 8b: —
| Benchmark | Gemma 4 31B IT | Molmo 2 8b |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 73.3% | — |
| LMArena Math | 1464 | — |
Knowledge Not comparable
Gemma 4 31B IT: 37.9 (#141), Molmo 2 8b: —
| Benchmark | Gemma 4 31B IT | Molmo 2 8b |
|---|---|---|
| GPQA Diamond | 75.8% | — |
| SimpleQA Verified | 10.4% | — |
| Vectara Hallucination Rate | 7.4% | — |
| LMArena Expert | 1465 | — |
Multimodal Gemma 4 31B IT leads
Gemma 4 31B IT: 41.0 (#32), Molmo 2 8b: 29.5 (#106)
| Benchmark | Gemma 4 31B IT | Molmo 2 8b |
|---|---|---|
| LMArena Vision | 1278 | 1081 |
| LMArena Document | 1425 | — |
Multilingual Gemma 4 31B IT leads
Gemma 4 31B IT: 54.0 (#52), Molmo 2 8b: 42.8 (#186)
| Benchmark | Gemma 4 31B IT | Molmo 2 8b |
|---|---|---|
| LMArena Non-English | 1431 | 1275 |
| LMArena Chinese | 1478 | — |
| LMArena French | 1436 | — |
| LMArena Russian | 1462 | — |
| LMArena Spanish | 1443 | — |
Instruction Following Gemma 4 31B IT leads
Gemma 4 31B IT: 75.6 (#58), Molmo 2 8b: 67.2 (#196)
| Benchmark | Gemma 4 31B IT | Molmo 2 8b |
|---|---|---|
| LMArena Instruction Following | 1433 | 1270 |
Long Context Not comparable
Gemma 4 31B IT: 44.2 (#67), Molmo 2 8b: —
| Benchmark | Gemma 4 31B IT | Molmo 2 8b |
|---|---|---|
| LMArena Longer Query | 1446 | — |
Writing & Preference Gemma 4 31B IT leads
Gemma 4 31B IT: 60.7 (#92), Molmo 2 8b: 49.5 (#187)
| Benchmark | Gemma 4 31B IT | Molmo 2 8b |
|---|---|---|
| LMArena Text | 1443 | 1288 |
| LMArena Creative Writing | 1416 | — |
| EQ-Bench Creative Writing | 1368 | — |
| EQ-Bench 4 | 1120 | — |
| LMArena Multi-Turn | 1452 | — |
Frequently asked questions
Is Gemma 4 31B IT better than Molmo 2 8b?
Gemma 4 31B IT is the stronger model overall, scoring 43.2 to 38.7 on the Noometry Index.
How many benchmarks do Gemma 4 31B IT and Molmo 2 8b share?
5 benchmarks have published results for both models. Gemma 4 31B IT has 35 scored results on Noometry and Molmo 2 8b has 5.