Gemma 4 31B vs Nemotron 3 Nano 30B A3B
Gemma 4 31B leads Nemotron 3 Nano 30B A3B on the Artificial Analysis Intelligence Index, 14.7 to 8.9, and Nemotron 3 Nano 30B A3B costs 1.8x less per output token ($0.22 vs $0.40 per million). Updated October 22, 2026; 35 benchmarks have a result for both.
Gemma 4 31B or Nemotron 3 Nano 30B A3B: which to pick
Only Gemma 4 31B has a coding score, 39.0 on the Vibe Coding Index; Nemotron 3 Nano 30B A3B has none, so the two cannot be ranked on coding.
Pick Nemotron 3 Nano 30B A3B for output tokens 1.8x cheaper ($0.22 vs $0.40 per million).
- Shared results
- 35
- Gemma 4 31B only
- 37
- Nemotron 3 Nano 30B A3B only
- 7
- Like-for-like categories
- 7 of 9
Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, six public coding benchmarks
No call
Only Gemma 4 31B has a coding score, so no call is made.
One side not measured
Intelligence
AA Intelligence Index
Gemma 4 31B
Gemma 4 31B leads, 14.7 against 8.9.
Same board, both measured
Agentic work
AA Agentic Index
Gemma 4 31B
Gemma 4 31B leads, 4.2 against 1.0.
Same board, both measured
Long documents
Listed context window
No call
Both take 262K tokens.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Nemotron 3 Nano 30B A3B
Gemma 4 31B $0.0003, Nemotron 3 Nano 30B A3B $0.0002 per turn.
List prices
At a glance
- Coding index
- Gemma 4 31B 39.0 from 2 benchmarks, Nemotron 3 Nano 30B A3B not benchmarked.
- Widest category
- General, 18.7 points apart on average over 16 shared benchmarks.
- Widest single gap
- Long context reasoning (AA-LCR): Gemma 4 31B 69.7% against Nemotron 3 Nano 30B A3B 38.0%, 31.7 points apart on a 0 to 100 scale.
- Output price
- Gemma 4 31B $0.40 against Nemotron 3 Nano 30B A3B $0.22 per million output tokens, 1.8x apart.
- Context window
- Both take 262K tokens.
Benchmark by benchmark
First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.
| Category | Gemma 4 31B | Bars | Nemotron 3 Nano 30B A3B | Ties |
|---|---|---|---|---|
| Coding | 5 | 0 | ||
| Intelligence | 1 | 0 | ||
| Agentic work | 2 | 0 | ||
| Reasoning | 5 | 0 | ||
| Math | 2 | 0 | ||
| Knowledge | 4 | 0 | ||
| General | 16 | 0 | ||
| All shared boards | 35 | 0 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index50
| Benchmark | Gemma 4 31B | Nemotron 3 Nano 30B A3B | Leader |
|---|---|---|---|
| LiveBench coding | 49.0% | Not measured | Only Gemma 4 31B measured |
| LMArena WebDev | 1367 | Not measured | Only Gemma 4 31B measured |
| AA Coding Index | 43.4 | 14.4 | Gemma 4 31B |
| LiveCodeBench (Artificial Analysis run) | Not measured | 74.1% | Only Nemotron 3 Nano 30B A3B measured |
| SciCode | 45.5% | 30.6% | Gemma 4 31B |
| Terminal-Bench Hard (Artificial Analysis run) | 36.4% | 13.6% | Gemma 4 31B |
| WeirdML | 52.3% | Not measured | Only Gemma 4 31B measured |
| ALE-Bench | 925.5 | Not measured | Only Gemma 4 31B measured |
| LMArena Text: coding | 1459 | 1378 | Gemma 4 31B |
| LMArena Text: software and IT | 1463 | 1383 | Gemma 4 31B |
| LMArena WebDev: React | 1359 | Not measured | Only Gemma 4 31B measured |
| LMArena WebDev: HTML | 1380 | Not measured | Only Gemma 4 31B measured |
| SciCode | 8.9% | Not measured | Only Gemma 4 31B measured |
| Neither model has a result on the other 30 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Gemma 4 31B | Nemotron 3 Nano 30B A3B | Leader |
|---|---|---|---|
| AA Intelligence Index | 14.7 | 8.9 | Gemma 4 31B |
| Epoch Capabilities Index | 143.0 | Not measured | Only Gemma 4 31B measured |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Gemma 4 31B | Nemotron 3 Nano 30B A3B | Leader |
|---|---|---|---|
| AA Agentic Index | 4.2 | 1.0 | Gemma 4 31B |
| LiveBench research | 44.4% | Not measured | Only Gemma 4 31B measured |
| LiveBench browser | 4.0% | Not measured | Only Gemma 4 31B measured |
| LiveBench long agentic | 13.3% | Not measured | Only Gemma 4 31B measured |
| τ²-Bench Telecom | 65.5% | 40.9% | Gemma 4 31B |
| Neither model has a result on the other 37 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index50
| Benchmark | Gemma 4 31B | Nemotron 3 Nano 30B A3B | Leader |
|---|---|---|---|
| LiveBench reasoning | 68.3% | Not measured | Only Gemma 4 31B measured |
| GPQA Diamond (Artificial Analysis run) | 85.7% | 75.7% | Gemma 4 31B |
| Humanity's Last Exam (Artificial Analysis run) | 23.6% | 11.4% | Gemma 4 31B |
| GPQA Diamond (Epoch AI run) | 75.8% | Not measured | Only Gemma 4 31B measured |
| LMArena Text: hard prompts | 1448 | 1348 | Gemma 4 31B |
| LMArena Text: expert | 1464 | 1355 | Gemma 4 31B |
| LMArena Text: hard prompts in English | 1456 | 1376 | Gemma 4 31B |
| LMArena Vision: diagrams | 1283 | Not measured | Only Gemma 4 31B measured |
| LMArena Vision: homework | 1310 | Not measured | Only Gemma 4 31B measured |
| Kagi LLM Benchmark | 63.5% | Not measured | Only Gemma 4 31B measured |
| Neither model has a result on the other 13 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Gemma 4 31B | Nemotron 3 Nano 30B A3B | Leader |
|---|---|---|---|
| AA Math Index | Not measured | 91.0 | Only Nemotron 3 Nano 30B A3B measured |
| AIME 2025 (Artificial Analysis run) | Not measured | 91.0% | Only Nemotron 3 Nano 30B A3B measured |
| OTIS Mock AIME | 73.3% | Not measured | Only Gemma 4 31B measured |
| LMArena Text: math | 1463 | 1371 | Gemma 4 31B |
| LMArena Text: mathematical work | 1465 | 1375 | Gemma 4 31B |
| Neither model has a result on the other 9 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | Gemma 4 31B | Nemotron 3 Nano 30B A3B | Leader |
|---|---|---|---|
| CaseLaw (Vals AI) | 52.6% | Not measured | Only Gemma 4 31B measured |
| MortgageTax (Vals AI) | 61.4% | Not measured | Only Gemma 4 31B measured |
| MMLU Pro (Artificial Analysis run) | Not measured | 79.4% | Only Nemotron 3 Nano 30B A3B measured |
| SimpleQA Verified | 10.4% | Not measured | Only Gemma 4 31B measured |
| LMArena Text: science | 1457 | 1353 | Gemma 4 31B |
| LMArena Text: medicine and healthcare | 1451 | 1349 | Gemma 4 31B |
| LMArena Text: legal and government | 1438 | 1341 | Gemma 4 31B |
| LMArena Text: business and finance | 1430 | 1346 | Gemma 4 31B |
| FACTS Benchmark Suite | 45.3% | Not measured | Only Gemma 4 31B measured |
| Neither model has a result on the other 11 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index1 board, none shared
| Benchmark | Gemma 4 31B | Nemotron 3 Nano 30B A3B | Leader |
|---|---|---|---|
| LiveBench design | 58.4% | Not measured | Only Gemma 4 31B measured |
| Neither model has a result on the other 8 boards here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index160
| Benchmark | Gemma 4 31B | Nemotron 3 Nano 30B A3B | Leader |
|---|---|---|---|
| LiveBench data analysis | 53.3% | Not measured | Only Gemma 4 31B measured |
| SAGE (Vals AI) | 55.0% | Not measured | Only Gemma 4 31B measured |
| IFBench | 75.6% | 71.1% | Gemma 4 31B |
| Long context reasoning (AA-LCR) | 69.7% | 38.0% | Gemma 4 31B |
| DTBench | 82.7% | Not measured | Only Gemma 4 31B measured |
| LMCA | 39.3% | Not measured | Only Gemma 4 31B measured |
| Surface Evolver Bench | 30.6% | Not measured | Only Gemma 4 31B measured |
| LMArena Text | 1443 | 1348 | Gemma 4 31B |
| LMArena Text: instruction following | 1433 | 1303 | Gemma 4 31B |
| LMArena Text: creative writing | 1417 | 1269 | Gemma 4 31B |
| LMArena Vision | 1276 | Not measured | Only Gemma 4 31B measured |
| LMArena Text: English | 1451 | 1377 | Gemma 4 31B |
| LMArena Text: non-English | 1430 | 1320 | Gemma 4 31B |
| LMArena Text: Chinese | 1475 | 1383 | Gemma 4 31B |
| LMArena Text: German | Not measured | 1348 | Only Nemotron 3 Nano 30B A3B measured |
| LMArena Text: Japanese | Not measured | 1268 | Only Nemotron 3 Nano 30B A3B measured |
| LMArena Text: Korean | Not measured | 1269 | Only Nemotron 3 Nano 30B A3B measured |
| LMArena Text: French | 1436 | 1396 | Gemma 4 31B |
| LMArena Text: Spanish | 1442 | 1376 | Gemma 4 31B |
| LMArena Text: Russian | 1460 | 1304 | Gemma 4 31B |
| LMArena Text: Polish | 1433 | 1303 | Gemma 4 31B |
| LMArena Text: multi-turn | 1452 | 1319 | Gemma 4 31B |
| LMArena Text: longer queries | 1446 | 1300 | Gemma 4 31B |
| LMArena Text: writing and language | 1432 | 1283 | Gemma 4 31B |
| LMArena Text: entertainment and media | 1405 | 1293 | Gemma 4 31B |
| LMArena Vision: English | 1271 | Not measured | Only Gemma 4 31B measured |
| LMArena Vision: Chinese | 1326 | Not measured | Only Gemma 4 31B measured |
| LMArena Vision: reading text | 1282 | Not measured | Only Gemma 4 31B measured |
| LMArena Vision: humor | 1280 | Not measured | Only Gemma 4 31B measured |
| LMArena Vision: captioning | 1218 | Not measured | Only Gemma 4 31B measured |
| LMArena Vision: recognizing things | 1226 | Not measured | Only Gemma 4 31B measured |
| LMArena Vision: creative writing | 1285 | Not measured | Only Gemma 4 31B measured |
| LMArena Document | 1425 | Not measured | Only Gemma 4 31B measured |
| EQ-Bench 4 | 1120 | Not measured | Only Gemma 4 31B measured |
| Neither model has a result on the other 14 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Gemma 4 31B | Nemotron 3 Nano 30B A3B | Leader |
|---|---|---|---|
| Neither model has a result on 5 boards here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Nemotron 3 Nano 30B A3B costs less
Repository review
50K input + 3K output tokens
Nemotron 3 Nano 30B A3B costs less
Agent loop
200K input + 10K output tokens
Nemotron 3 Nano 30B A3B costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | Google Gemma 4 31B | NVIDIA Nemotron 3 Nano 30B A3B |
|---|---|---|
| Maker | NVIDIA | |
| Weights | Open weights | Open weights |
| Released | April 2, 2026 | December 14, 2025 |
| Context window | 262K | 262K |
| Input $/Mtok | $0.14 | $0.055 |
| Output $/Mtok | $0.40 | $0.22 |
| Coding index | 39.0 | Not benchmarked |
| Independent measurements behind it | 2 | 0 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Gemma 4 31B better than Nemotron 3 Nano 30B A3B for coding?
Only Gemma 4 31B has a coding score, 39.0 on the Vibe Coding Index; Nemotron 3 Nano 30B A3B has none, so the two cannot be ranked on coding. Pick Nemotron 3 Nano 30B A3B for output tokens 1.8x cheaper ($0.22 vs $0.40 per million).
Which is cheaper, Gemma 4 31B or Nemotron 3 Nano 30B A3B?
Gemma 4 31B costs $0.14 per million input tokens and $0.40 per million output tokens; Nemotron 3 Nano 30B A3B costs $0.055 and $0.22. Cost per solved task is known for neither of them.
Which has the bigger context window, Gemma 4 31B or Nemotron 3 Nano 30B A3B?
Neither: both take 262K tokens.
How many benchmarks is the Gemma 4 31B vs Nemotron 3 Nano 30B A3B comparison based on?
35 benchmarks have a result for both models as of October 22, 2026. Gemma 4 31B's coding index rests on 2 independent benchmarks and Nemotron 3 Nano 30B A3B's on 0. Where only one model has a result, the page says so instead of naming a winner.