Model comparison
Gemma 4 31B IT vs Mercury
Gemma 4 31B IT is the stronger model overall, scoring 43.2 to 37.3 on the Noometry Index.
Last verified . 9 shared benchmarks.
GoogleSummary
- They share 9 benchmarks with published results for both. Gemma 4 31B IT scores higher in 6 categories and Mercury in 0 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Gemma 4 31B IT leads 60.7 to 46.2.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 63.5% for Gemma 4 31B IT and 21.6% for Mercury.
- Gemma 4 31B IT has downloadable open weights; the other is API-only.
Side by side
| Gemma 4 31B IT | Mercury | |
|---|---|---|
| Provider | Inception | |
| Noometry Index | 43.2 | 37.3 |
| Released | 2026-04-02 | — |
| Weights | Open | Proprietary |
| Context window | 262K | — |
| Max output | 33K | — |
| Input $ / M tokens | $0.09 | — |
| Output $ / M tokens | $0.34 | — |
| Results tracked | 35 | 9 |
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Category by category
Coding Gemma 4 31B IT leads
Gemma 4 31B IT: 41.9 (#98), Mercury: 38.1 (#164)
| Benchmark | Gemma 4 31B IT | Mercury |
|---|---|---|
| LMArena Coding | 1459 | 1323 |
| LMArena WebDev | 1364 | — |
| SciCode | 43.4% | — |
| WeirdML | 52.3% | — |
| ALE-Bench | 925.5 | — |
Reasoning Gemma 4 31B IT leads
Gemma 4 31B IT: 26.4 (#119), Mercury: 16.8 (#288)
| Benchmark | Gemma 4 31B IT | Mercury |
|---|---|---|
| Kagi LLM Benchmark | 63.5% | 21.6% |
| LMArena Hard Prompts | 1448 | 1284 |
| 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), Mercury: —
| Benchmark | Gemma 4 31B IT | Mercury |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 73.3% | — |
| LMArena Math | 1464 | — |
Knowledge Not comparable
Gemma 4 31B IT: 37.9 (#141), Mercury: —
| Benchmark | Gemma 4 31B IT | Mercury |
|---|---|---|
| GPQA Diamond | 75.8% | — |
| SimpleQA Verified | 10.4% | — |
| Vectara Hallucination Rate | 7.4% | — |
| LMArena Expert | 1465 | — |
Multimodal Not comparable
Gemma 4 31B IT: 41.0 (#32), Mercury: —
| Benchmark | Gemma 4 31B IT | Mercury |
|---|---|---|
| LMArena Vision | 1278 | — |
| LMArena Document | 1425 | — |
Multilingual Gemma 4 31B IT leads
Gemma 4 31B IT: 54.0 (#52), Mercury: 41.7 (#201)
| Benchmark | Gemma 4 31B IT | Mercury |
|---|---|---|
| LMArena Non-English | 1431 | 1259 |
| 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), Mercury: 65.3 (#220)
| Benchmark | Gemma 4 31B IT | Mercury |
|---|---|---|
| LMArena Instruction Following | 1433 | 1238 |
Long Context Gemma 4 31B IT leads
Gemma 4 31B IT: 44.2 (#67), Mercury: 38.3 (#193)
| Benchmark | Gemma 4 31B IT | Mercury |
|---|---|---|
| LMArena Longer Query | 1446 | 1264 |
Writing & Preference Gemma 4 31B IT leads
Gemma 4 31B IT: 60.7 (#92), Mercury: 46.2 (#216)
| Benchmark | Gemma 4 31B IT | Mercury |
|---|---|---|
| LMArena Text | 1443 | 1282 |
| LMArena Creative Writing | 1416 | 1186 |
| LMArena Multi-Turn | 1452 | 1283 |
| EQ-Bench Creative Writing | 1368 | — |
| EQ-Bench 4 | 1120 | — |
Frequently asked questions
Is Gemma 4 31B IT better than Mercury?
Gemma 4 31B IT is the stronger model overall, scoring 43.2 to 37.3 on the Noometry Index.
Is Gemma 4 31B IT or Mercury better for coding?
Gemma 4 31B IT scores higher on coding benchmarks: 41.9 versus 38.1 in the Noometry coding category.
How many benchmarks do Gemma 4 31B IT and Mercury share?
9 benchmarks have published results for both models. Gemma 4 31B IT has 35 scored results on Noometry and Mercury has 9.