gpt-oss-20b vs Nemotron 3 Super
Nemotron 3 Super leads gpt-oss-20b on the Artificial Analysis Intelligence Index, 12.8 to 10.0, and gpt-oss-20b costs 3.0x less per output token ($0.15 vs $0.45 per million). Updated October 22, 2026; 36 benchmarks have a result for both.
gpt-oss-20b or Nemotron 3 Super: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick gpt-oss-20b for output tokens 3.0x cheaper ($0.15 vs $0.45 per million) and work measured by Terminal-Bench Hard (Artificial Analysis run) or LMArena Text: coding, where it leads.
- Shared results
- 36
- gpt-oss-20b only
- 27
- Nemotron 3 Super only
- 3
- 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
Neither has a coding score yet.
One side not measured
Intelligence
AA Intelligence Index
Nemotron 3 Super
Nemotron 3 Super leads, 12.8 against 10.0.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Nemotron 3 Super has a AA Agentic Index result, 1.7.
Directional only
Reasoning
GPQA Diamond
No call
Only gpt-oss-20b has a GPQA Diamond result, 68.9%.
Directional only
Math
AIME
No call
Only gpt-oss-20b has a AIME result, 86.0%.
Directional only
Knowledge
MMLU Pro
No call
Only gpt-oss-20b has a MMLU Pro result, 71.6%.
Directional only
Web design
Design Arena: websites
No call
Only gpt-oss-20b has a Design Arena: websites result, 852.
Directional only
Long documents
Listed context window
Nemotron 3 Super
Nemotron 3 Super takes 262K tokens against 131K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
gpt-oss-20b
gpt-oss-20b $0.0001, Nemotron 3 Super $0.0003 per turn.
List prices
At a glance
- Coding index
- gpt-oss-20b not benchmarked, Nemotron 3 Super not benchmarked.
- Widest category
- General, 17.2 points apart on average over 16 shared benchmarks.
- Widest single gap
- Long context reasoning (AA-LCR): gpt-oss-20b 34.7% against Nemotron 3 Super 65.7%, 31.0 points apart on a 0 to 100 scale.
- Output price
- gpt-oss-20b $0.15 against Nemotron 3 Super $0.45 per million output tokens, 3.0x apart.
- Context window
- gpt-oss-20b takes 131K tokens, Nemotron 3 Super 262K.
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 | gpt-oss-20b | Bars | Nemotron 3 Super | Ties |
|---|---|---|---|---|
| Coding | 3 | 3 | ||
| Intelligence | 0 | 1 | ||
| Agentic work | 0 | 1 | ||
| Reasoning | 0 | 5 | ||
| Math | 0 | 3 | ||
| Knowledge | 0 | 4 | ||
| General | 0 | 16 | ||
| All shared boards | 3 | 33 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index33
| Benchmark | gpt-oss-20b | Nemotron 3 Super | Leader |
|---|---|---|---|
| AA Coding Index | Not measured | 37.7 | Only Nemotron 3 Super measured |
| LiveCodeBench (Vals AI) | 80.4% | Not measured | Only gpt-oss-20b measured |
| LiveCodeBench (Artificial Analysis run) | 77.7% | Not measured | Only gpt-oss-20b measured |
| SciCode | 38.9% | 36.2% | gpt-oss-20b |
| Terminal-Bench Hard (Artificial Analysis run) | 10.6% | 28.8% | Nemotron 3 Super |
| Terminal-Bench | 3.4% | Not measured | Only gpt-oss-20b measured |
| WeirdML | 40.9% | 38.0% | gpt-oss-20b |
| ALE-Bench | 566.0 | 213.9 | gpt-oss-20b |
| LMArena Text: coding | 1307 | 1403 | Nemotron 3 Super |
| LMArena Text: software and IT | 1311 | 1409 | Nemotron 3 Super |
| Neither model has a result on the other 33 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | gpt-oss-20b | Nemotron 3 Super | Leader |
|---|---|---|---|
| AA Intelligence Index | 10.0 | 12.8 | Nemotron 3 Super |
| Epoch Capabilities Index | 137.7 | Not measured | Only gpt-oss-20b measured |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | gpt-oss-20b | Nemotron 3 Super | Leader |
|---|---|---|---|
| AA Agentic Index | Not measured | 1.7 | Only Nemotron 3 Super measured |
| τ²-Bench Telecom | 60.2% | 67.8% | Nemotron 3 Super |
| BrowseComp-Plus | 50.6% | Not measured | Only gpt-oss-20b measured |
| Neither model has a result on the other 39 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index05
| Benchmark | gpt-oss-20b | Nemotron 3 Super | Leader |
|---|---|---|---|
| GPQA Diamond | 68.9% | Not measured | Only gpt-oss-20b measured |
| GPQA Diamond (Artificial Analysis run) | 68.8% | 80.0% | Nemotron 3 Super |
| Humanity's Last Exam (Artificial Analysis run) | 11.0% | 20.8% | Nemotron 3 Super |
| GPQA Diamond (Epoch AI run) | 60.8% | Not measured | Only gpt-oss-20b measured |
| LMArena Text: hard prompts | 1274 | 1386 | Nemotron 3 Super |
| LMArena Text: expert | 1258 | 1398 | Nemotron 3 Super |
| LMArena Text: hard prompts in English | 1292 | 1397 | Nemotron 3 Super |
| Kagi LLM Benchmark | 53.2% | Not measured | Only gpt-oss-20b measured |
| Neither model has a result on the other 15 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index03
| Benchmark | gpt-oss-20b | Nemotron 3 Super | Leader |
|---|---|---|---|
| AIME | 86.0% | Not measured | Only gpt-oss-20b measured |
| MATH 500 (Vals AI) | 94.2% | Not measured | Only gpt-oss-20b measured |
| MGSM (Vals AI) | 89.0% | Not measured | Only gpt-oss-20b measured |
| AA Math Index | 89.3 | Not measured | Only gpt-oss-20b measured |
| AIME 2025 (Artificial Analysis run) | 89.3% | Not measured | Only gpt-oss-20b measured |
| OTIS Mock AIME | 65.3% | Not measured | Only gpt-oss-20b measured |
| LMArena Text: math | 1317 | 1380 | Nemotron 3 Super |
| LMArena Text: mathematical work | 1305 | 1405 | Nemotron 3 Super |
| MathArena | 12.8% | 16.6% | Nemotron 3 Super |
| Neither model has a result on the other 5 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index04
| Benchmark | gpt-oss-20b | Nemotron 3 Super | Leader |
|---|---|---|---|
| MMLU Pro | 71.6% | Not measured | Only gpt-oss-20b measured |
| LegalBench (Vals AI) | 70.8% | Not measured | Only gpt-oss-20b measured |
| CaseLaw (Vals AI) | 43.8% | Not measured | Only gpt-oss-20b measured |
| CorpFin (Vals AI) | 53.1% | Not measured | Only gpt-oss-20b measured |
| TaxEval (Vals AI) | 63.7% | Not measured | Only gpt-oss-20b measured |
| MedQA (Vals AI) | 82.9% | Not measured | Only gpt-oss-20b measured |
| MMLU Pro (Artificial Analysis run) | 74.8% | Not measured | Only gpt-oss-20b measured |
| LMArena Text: science | 1296 | 1387 | Nemotron 3 Super |
| LMArena Text: medicine and healthcare | 1310 | 1383 | Nemotron 3 Super |
| LMArena Text: legal and government | 1280 | 1392 | Nemotron 3 Super |
| LMArena Text: business and finance | 1284 | 1364 | Nemotron 3 Super |
| Neither model has a result on the other 9 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index2 boards, none shared
| Benchmark | gpt-oss-20b | Nemotron 3 Super | Leader |
|---|---|---|---|
| Design Arena: websites | 852 | Not measured | Only gpt-oss-20b measured |
| Design Arena: data viz | 933 | Not measured | Only gpt-oss-20b measured |
| Neither model has a result on the other 7 boards here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index016
| Benchmark | gpt-oss-20b | Nemotron 3 Super | Leader |
|---|---|---|---|
| IFBench | 65.1% | 71.5% | Nemotron 3 Super |
| Long context reasoning (AA-LCR) | 34.7% | 65.7% | Nemotron 3 Super |
| DTBench | 68.0% | Not measured | Only gpt-oss-20b measured |
| LMCA | 14.5% | Not measured | Only gpt-oss-20b measured |
| LMArena Text | 1288 | 1378 | Nemotron 3 Super |
| LMArena Text: instruction following | 1236 | 1347 | Nemotron 3 Super |
| LMArena Text: creative writing | 1201 | 1317 | Nemotron 3 Super |
| LMArena Text: English | 1303 | 1400 | Nemotron 3 Super |
| LMArena Text: non-English | 1269 | 1356 | Nemotron 3 Super |
| LMArena Text: Chinese | 1315 | 1431 | Nemotron 3 Super |
| LMArena Text: German | 1255 | 1341 | Nemotron 3 Super |
| LMArena Text: Japanese | 1244 | Not measured | Only gpt-oss-20b measured |
| LMArena Text: Korean | 1236 | Not measured | Only gpt-oss-20b measured |
| LMArena Text: French | Not measured | 1403 | Only Nemotron 3 Super measured |
| LMArena Text: Spanish | 1267 | 1418 | Nemotron 3 Super |
| LMArena Text: Russian | 1278 | 1336 | Nemotron 3 Super |
| LMArena Text: Polish | 1252 | 1346 | Nemotron 3 Super |
| LMArena Text: multi-turn | 1268 | 1369 | Nemotron 3 Super |
| LMArena Text: longer queries | 1250 | 1362 | Nemotron 3 Super |
| LMArena Text: writing and language | 1238 | 1332 | Nemotron 3 Super |
| LMArena Text: entertainment and media | 1216 | 1336 | Nemotron 3 Super |
| Neither model has a result on the other 27 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | gpt-oss-20b | Nemotron 3 Super | 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
gpt-oss-20b costs less
Repository review
50K input + 3K output tokens
gpt-oss-20b costs less
Agent loop
200K input + 10K output tokens
gpt-oss-20b 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 | OpenAI gpt-oss-20b | NVIDIA Nemotron 3 Super |
|---|---|---|
| Maker | OpenAI | NVIDIA |
| Weights | Open weights | Open weights |
| Released | August 5, 2025 | March 11, 2026 |
| Context window | 131K | 262K |
| Input $/Mtok | $0.03 | $0.085 |
| Output $/Mtok | $0.15 | $0.45 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 0 | 0 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is gpt-oss-20b better than Nemotron 3 Super for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick gpt-oss-20b for output tokens 3.0x cheaper ($0.15 vs $0.45 per million) and work measured by Terminal-Bench Hard (Artificial Analysis run) or LMArena Text: coding, where it leads.
Which is cheaper, gpt-oss-20b or Nemotron 3 Super?
gpt-oss-20b costs $0.03 per million input tokens and $0.15 per million output tokens; Nemotron 3 Super costs $0.085 and $0.45. Cost per solved task is known for neither of them.
Which has the bigger context window, gpt-oss-20b or Nemotron 3 Super?
Nemotron 3 Super, with 262K tokens against 131K.
How many benchmarks is the gpt-oss-20b vs Nemotron 3 Super comparison based on?
36 benchmarks have a result for both models as of October 22, 2026. gpt-oss-20b's coding index rests on 0 independent benchmarks and Nemotron 3 Super's on 0. Where only one model has a result, the page says so instead of naming a winner.