Model comparison
Gemma 4 31B IT vs Llama 3.1-405B
Gemma 4 31B IT is the stronger model overall, scoring 43.5 to 30.7 on the Noometry Index.
Last verified . 21 shared benchmarks.
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MetaSummary
- They share 21 benchmarks with published results for both. Gemma 4 31B IT scores higher in 8 categories and Llama 3.1-405B in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Gemma 4 31B IT leads 43.2 to 18.4.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 73.3% for Gemma 4 31B IT and 9.7% for Llama 3.1-405B.
Side by side
| Gemma 4 31B IT | Llama 3.1-405B | |
|---|---|---|
| Provider | Meta | |
| Noometry Index | 43.5 | 30.7 |
| Released | 2026-04-02 | 2024-07-23 |
| Weights | Open | Open |
| Context window | 262K | — |
| Max output | 33K | — |
| Input $ / M tokens | $0.09 | — |
| Output $ / M tokens | $0.34 | — |
| Results tracked | 35 | 42 |
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Category by category
Coding Gemma 4 31B IT leads
Gemma 4 31B IT: 42.3 (#108), Llama 3.1-405B: 33.1 (#262)
| Benchmark | Gemma 4 31B IT | Llama 3.1-405B |
|---|---|---|
| WeirdML | 52.3% | 21.4% |
| LMArena Coding | 1459 | 1291 |
| LMArena WebDev | 1366 | — |
| SciCode | 43.4% | — |
| ALE-Bench | 925.5 | — |
Agentic & Tool Use Not comparable
Gemma 4 31B IT: —, Llama 3.1-405B: 21.0 (#140)
| Benchmark | Gemma 4 31B IT | Llama 3.1-405B |
|---|---|---|
| TheAgentCompany | — | 7.4% |
| Cybench | — | 7.5% |
Reasoning Gemma 4 31B IT leads
Gemma 4 31B IT: 27.2 (#122), Llama 3.1-405B: 16.8 (#300)
| Benchmark | Gemma 4 31B IT | Llama 3.1-405B |
|---|---|---|
| Kagi LLM Benchmark | 63.5% | 45% |
| LMArena Hard Prompts | 1448 | 1269 |
| DTBench | 82.7% | 61.4% |
| Epoch Capabilities Index | 142.74 | 128.75 |
| SimpleBench | — | 23% |
| NYT Connections (extended) | 70.6% | — |
| CritPt | 1.4% | — |
| Chess Puzzles | 5% | — |
| Thematic Generalization | 53% | — |
| LMCA | 39.3% | — |
| Surface Evolver Bench | 30.6% | — |
| BIG-Bench Hard | — | 82.9% |
| ForecastBench | — | 59.9 |
| HellaSwag | — | 89.2% |
| PIQA | — | 85.9% |
| WinoGrande | — | 89.2% |
Math Gemma 4 31B IT leads
Gemma 4 31B IT: 43.2 (#81), Llama 3.1-405B: 18.4 (#290)
| Benchmark | Gemma 4 31B IT | Llama 3.1-405B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 73.3% | 9.7% |
| LMArena Math | 1465 | 1281 |
| Omni-MATH | — | 24.9% |
| MATH Level 5 | — | 49.8% |
Knowledge Gemma 4 31B IT leads
Gemma 4 31B IT: 37.9 (#151), Llama 3.1-405B: 30.4 (#227)
| Benchmark | Gemma 4 31B IT | Llama 3.1-405B |
|---|---|---|
| GPQA Diamond | 75.8% | 50.9% |
| LMArena Expert | 1465 | 1243 |
| SimpleQA Verified | 10.4% | — |
| MMLU-Pro | — | 72.3% |
| Confabulations | — | 17.6% |
| Vectara Hallucination Rate | 7.4% | — |
| GPQA (HELM) | — | 52.2% |
| ARC (AI2) Challenge | — | 95.3% |
| MMLU | — | 84.5% |
| TriviaQA | — | 82.7% |
Multimodal Not comparable
Gemma 4 31B IT: 41.6 (#34), Llama 3.1-405B: —
| Benchmark | Gemma 4 31B IT | Llama 3.1-405B |
|---|---|---|
| LMArena Vision | 1277 | — |
| LMArena Document | 1425 | — |
Multilingual Gemma 4 31B IT leads
Gemma 4 31B IT: 53.8 (#57), Llama 3.1-405B: 40.7 (#214)
| Benchmark | Gemma 4 31B IT | Llama 3.1-405B |
|---|---|---|
| LMArena Non-English | 1431 | 1248 |
| LMArena Chinese | 1476 | 1242 |
| LMArena French | 1435 | 1279 |
| LMArena Russian | 1460 | 1265 |
| LMArena Spanish | 1444 | 1260 |
| LMArena German | — | 1252 |
| LMArena Japanese | — | 1208 |
| LMArena Korean | — | 1184 |
Instruction Following Gemma 4 31B IT leads
Gemma 4 31B IT: 75.5 (#61), Llama 3.1-405B: 65.9 (#214)
| Benchmark | Gemma 4 31B IT | Llama 3.1-405B |
|---|---|---|
| LMArena Instruction Following | 1433 | 1259 |
| IFEval | — | 81.1% |
Long Context Gemma 4 31B IT leads
Gemma 4 31B IT: 44.2 (#71), Llama 3.1-405B: 38.4 (#197)
| Benchmark | Gemma 4 31B IT | Llama 3.1-405B |
|---|---|---|
| LMArena Longer Query | 1446 | 1266 |
Writing & Preference Gemma 4 31B IT leads
Gemma 4 31B IT: 60.5 (#96), Llama 3.1-405B: 38.9 (#251)
| Benchmark | Gemma 4 31B IT | Llama 3.1-405B |
|---|---|---|
| LMArena Text | 1443 | 1284 |
| LMArena Creative Writing | 1415 | 1262 |
| EQ-Bench Creative Writing | 1368 | 870 |
| LMArena Multi-Turn | 1452 | 1297 |
| WildBench | — | 78.3% |
| EQ-Bench 4 | 1120 | — |
Frequently asked questions
Is Gemma 4 31B IT better than Llama 3.1-405B?
Gemma 4 31B IT is the stronger model overall, scoring 43.5 to 30.7 on the Noometry Index.
Is Gemma 4 31B IT or Llama 3.1-405B better for coding?
Gemma 4 31B IT scores higher on coding benchmarks: 42.3 versus 33.1 in the Noometry coding category.
How many benchmarks do Gemma 4 31B IT and Llama 3.1-405B share?
21 benchmarks have published results for both models. Gemma 4 31B IT has 35 scored results on Noometry and Llama 3.1-405B has 42.