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gpt-oss-120b vs Nemotron 3 Ultra

Nemotron 3 Ultra leads gpt-oss-120b on the Artificial Analysis Intelligence Index, 22.9 to 11.6, and gpt-oss-120b costs 4.8x less per output token ($0.50 vs $2.40 per million). Updated October 22, 2026; 58 benchmarks have a result for both.

Replace gpt-oss-120b Replace Nemotron 3 Ultra
gpt-oss-120bOpenAI
Coding
No data
Overall
50.0
Output $/M
$0.50
2
Nemotron 3 UltraNVIDIA
Coding
30.0
Overall
53.1
Output $/M
$2.40
56
vs boards won of 58 shared

gpt-oss-120b or Nemotron 3 Ultra: which to pick

Only Nemotron 3 Ultra has a coding score, 30.0 on the Vibe Coding Index; gpt-oss-120b has none, so the two cannot be ranked on coding.

Pick gpt-oss-120b for output tokens 4.8x cheaper ($0.50 vs $2.40 per million) and work measured by WeirdML or OTIS Mock AIME, where it leads.

Model Agpt-oss-120bOpenAINot benchmarked1 independent benchmark$0.51 per solved taskModel BNemotron 3 UltraNVIDIA30.0/1003 independent benchmarksNo cost per solved task
Shared results
58
gpt-oss-120b only
27
Nemotron 3 Ultra only
13
Like-for-like categories
8 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.

At a glance

Coding index
gpt-oss-120b not benchmarked, Nemotron 3 Ultra 30.0 from 3 benchmarks.
Widest category
Web design, 23.0 points apart on average over 6 shared benchmarks.
Widest single gap
SWE-bench Verified (Vals AI): gpt-oss-120b 33.6% against Nemotron 3 Ultra 69.0%, 35.4 points apart on a 0 to 100 scale.
Output price
gpt-oss-120b $0.50 against Nemotron 3 Ultra $2.40 per million output tokens, 4.8x apart.
Context window
gpt-oss-120b takes 131K tokens, Nemotron 3 Ultra 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.

Boards won, where both have a result
Categorygpt-oss-120bBarsNemotron 3 UltraTies
Coding17
Intelligence02
Agentic work03
Reasoning08
Math12
Knowledge08
Web design06
General020
All shared boards256
CodingLike-for-likeSix of these boards feed the Vibe Coding Index17
Coding benchmarks for gpt-oss-120b and Nemotron 3 Ultra
Benchmarkgpt-oss-120bNemotron 3 UltraLeader
Aider polyglot41.8%Not measuredOnly gpt-oss-120b measured
SWE-bench Verified26.0%Not measuredOnly gpt-oss-120b measured
AA Coding Index30.449.3Nemotron 3 Ultra
LiveCodeBench (Vals AI)83.2%86.0%Nemotron 3 Ultra
SWE-bench Verified (Vals AI)33.6%69.0%Nemotron 3 Ultra
Vibe Code Bench (Vals AI)Not measured7.6%Only Nemotron 3 Ultra measured
Code migration (Vals AI)Not measured4.9%Only Nemotron 3 Ultra measured
ProgramBench (Vals AI)Not measured0.0%Only Nemotron 3 Ultra measured
Terminal-Bench 2.1 (Vals AI)Not measured50.9%Only Nemotron 3 Ultra measured
LiveCodeBench (Artificial Analysis run)87.8%Not measuredOnly gpt-oss-120b measured
SciCode34.0%40.3%Nemotron 3 Ultra
Terminal-Bench Hard (Artificial Analysis run)23.5%36.4%Nemotron 3 Ultra
Terminal-Bench18.7%Not measuredOnly gpt-oss-120b measured
FrontierCodeNot measured13.6%Only Nemotron 3 Ultra measured
WeirdML48.2%43.5%gpt-oss-120b
ALE-Bench575.6Not measuredOnly gpt-oss-120b measured
LMArena Text: coding13791468Nemotron 3 Ultra
LMArena Text: software and IT13871468Nemotron 3 Ultra
SciCode7.7%Not measuredOnly gpt-oss-120b measured
Neither model has a result on the other 24 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for gpt-oss-120b and Nemotron 3 Ultra
Benchmarkgpt-oss-120bNemotron 3 UltraLeader
AA Intelligence Index11.622.9Nemotron 3 Ultra
Epoch Capabilities Index139.8146.0Nemotron 3 Ultra
Agentic workLike-for-likePublic boards, shown as published, kept out of the index03
Agentic work benchmarks for gpt-oss-120b and Nemotron 3 Ultra
Benchmarkgpt-oss-120bNemotron 3 UltraLeader
AA Agentic Index3.720.1Nemotron 3 Ultra
Finance Agent (Vals AI)Not measured37.7%Only Nemotron 3 Ultra measured
Legal Research Bench (Vals AI)Not measured15.4%Only Nemotron 3 Ultra measured
Excel Modeling Benchmark (Vals AI)Not measured31.7%Only Nemotron 3 Ultra measured
τ²-Bench Telecom65.8%83.3%Nemotron 3 Ultra
APEX-Agents4.4%22.7%Nemotron 3 Ultra
METR time horizons56.6%Not measuredOnly gpt-oss-120b measured
Vending-Bench 2-$22Not measuredOnly gpt-oss-120b measured
BrowseComp-Plus67.0%Not measuredOnly gpt-oss-120b measured
MCP AtlasNot measured63.1%Only Nemotron 3 Ultra measured
Neither model has a result on the other 32 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index08
Reasoning benchmarks for gpt-oss-120b and Nemotron 3 Ultra
Benchmarkgpt-oss-120bNemotron 3 UltraLeader
GPQA Diamond78.5%86.1%Nemotron 3 Ultra
GPQA Diamond (Artificial Analysis run)78.2%86.7%Nemotron 3 Ultra
Humanity's Last Exam (Artificial Analysis run)19.6%28.4%Nemotron 3 Ultra
GPQA Diamond (Epoch AI run)75.8%85.4%Nemotron 3 Ultra
SimpleBench22.1%Not measuredOnly gpt-oss-120b measured
Mystery game puzzles2.0%20.0%Nemotron 3 Ultra
LMArena Text: hard prompts13641452Nemotron 3 Ultra
LMArena Text: expert13561472Nemotron 3 Ultra
LMArena Text: hard prompts in English13681453Nemotron 3 Ultra
Kagi LLM Benchmark58.6%Not measuredOnly gpt-oss-120b measured
Neither model has a result on the other 13 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index12
Math benchmarks for gpt-oss-120b and Nemotron 3 Ultra
Benchmarkgpt-oss-120bNemotron 3 UltraLeader
AIME92.6%Not measuredOnly gpt-oss-120b measured
MATH 500 (Vals AI)94.8%Not measuredOnly gpt-oss-120b measured
MGSM (Vals AI)92.0%Not measuredOnly gpt-oss-120b measured
AA Math Index93.4Not measuredOnly gpt-oss-120b measured
AIME 2025 (Artificial Analysis run)93.4%Not measuredOnly gpt-oss-120b measured
OTIS Mock AIME88.9%86.7%gpt-oss-120b
ProofBenchNot measured2.0%Only Nemotron 3 Ultra measured
LMArena Text: math13891457Nemotron 3 Ultra
LMArena Text: mathematical work13861461Nemotron 3 Ultra
MathArena15.1%Not measuredOnly gpt-oss-120b measured
Neither model has a result on the other 4 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index08
Knowledge benchmarks for gpt-oss-120b and Nemotron 3 Ultra
Benchmarkgpt-oss-120bNemotron 3 UltraLeader
MMLU Pro79.2%85.8%Nemotron 3 Ultra
LegalBench (Vals AI)75.9%82.1%Nemotron 3 Ultra
CaseLaw (Vals AI)48.8%Not measuredOnly gpt-oss-120b measured
CorpFin (Vals AI)58.2%65.5%Nemotron 3 Ultra
TaxEval (Vals AI)71.6%73.1%Nemotron 3 Ultra
MedQA (Vals AI)91.4%Not measuredOnly gpt-oss-120b measured
MedCode (Vals AI)Not measured38.6%Only Nemotron 3 Ultra measured
MMLU Pro (Artificial Analysis run)80.8%Not measuredOnly gpt-oss-120b measured
LMArena Text: science13821465Nemotron 3 Ultra
LMArena Text: medicine and healthcare13881456Nemotron 3 Ultra
LMArena Text: legal and government13551452Nemotron 3 Ultra
LMArena Text: business and finance13591434Nemotron 3 Ultra
PRBench Finance43.8%Not measuredOnly gpt-oss-120b measured
PRBench Legal40.2%Not measuredOnly gpt-oss-120b measured
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index06
Web design benchmarks for gpt-oss-120b and Nemotron 3 Ultra
Benchmarkgpt-oss-120bNemotron 3 UltraLeader
Design Arena: websites9681145Nemotron 3 Ultra
Design Arena: UI components9241135Nemotron 3 Ultra
Design Arena: game dev9911138Nemotron 3 Ultra
Design Arena: data viz9871141Nemotron 3 Ultra
Design Arena: 3D9011131Nemotron 3 Ultra
Design Arena: all code categories9621146Nemotron 3 Ultra
Design Arena: SVGNot measured1069Only Nemotron 3 Ultra measured
Design Arena: ASCII artNot measured1100Only Nemotron 3 Ultra measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index020
General benchmarks for gpt-oss-120b and Nemotron 3 Ultra
Benchmarkgpt-oss-120bNemotron 3 UltraLeader
IFBench69.0%81.4%Nemotron 3 Ultra
Long context reasoning (AA-LCR)52.0%79.3%Nemotron 3 Ultra
DTBench76.3%90.1%Nemotron 3 Ultra
LMCA22.1%36.9%Nemotron 3 Ultra
Fiction.LiveBench44.4%Not measuredOnly gpt-oss-120b measured
Creative writing (Lech Mazur)77.1%Not measuredOnly gpt-oss-120b measured
Surface Evolver Bench25.0%Not measuredOnly gpt-oss-120b measured
LMArena Text13661445Nemotron 3 Ultra
LMArena Text: instruction following13181418Nemotron 3 Ultra
LMArena Text: creative writing12741399Nemotron 3 Ultra
LMArena Text: English13751455Nemotron 3 Ultra
LMArena Text: non-English13511427Nemotron 3 Ultra
LMArena Text: Chinese13851497Nemotron 3 Ultra
LMArena Text: German13531472Nemotron 3 Ultra
LMArena Text: Japanese1331Not measuredOnly gpt-oss-120b measured
LMArena Text: Korean12821384Nemotron 3 Ultra
LMArena Text: French13701472Nemotron 3 Ultra
LMArena Text: Spanish13891455Nemotron 3 Ultra
LMArena Text: Russian13431417Nemotron 3 Ultra
LMArena Text: Polish13531385Nemotron 3 Ultra
LMArena Text: multi-turn13401411Nemotron 3 Ultra
LMArena Text: longer queries13191437Nemotron 3 Ultra
LMArena Text: writing and language13061406Nemotron 3 Ultra
LMArena Text: entertainment and media12921397Nemotron 3 Ultra
MultiChallenge45.3%Not measuredOnly gpt-oss-120b measured
Neither model has a result on the other 23 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for gpt-oss-120b and Nemotron 3 Ultra
Benchmarkgpt-oss-120bNemotron 3 UltraLeader
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-120b$0.0003Fits in one request
Nemotron 3 Ultra$0.0018Fits in one request

gpt-oss-120b costs less

Repository review

50K input + 3K output tokens

gpt-oss-120b$0.0065Fits in one request
Nemotron 3 Ultra$0.037Fits in one request

gpt-oss-120b costs less

Agent loop

200K input + 10K output tokens

gpt-oss-120b$0.025Exceeds the context window
Nemotron 3 Ultra$0.144Fits in one request

gpt-oss-120b 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.

Specifications of gpt-oss-120b and Nemotron 3 Ultra
SpecificationOpenAI gpt-oss-120bNVIDIA Nemotron 3 Ultra
MakerOpenAINVIDIA
WeightsOpen weightsOpen weights
ReleasedAugust 5, 2025June 4, 2026
Context window131K262K
Input $/Mtok$0.10$0.60
Output $/Mtok$0.50$2.40
Coding indexNot benchmarked30.0
Independent measurements behind it13
Cost per solved task$0.51Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is gpt-oss-120b better than Nemotron 3 Ultra for coding?

Only Nemotron 3 Ultra has a coding score, 30.0 on the Vibe Coding Index; gpt-oss-120b has none, so the two cannot be ranked on coding. Pick gpt-oss-120b for output tokens 4.8x cheaper ($0.50 vs $2.40 per million) and work measured by WeirdML or OTIS Mock AIME, where it leads.

Which is cheaper, gpt-oss-120b or Nemotron 3 Ultra?

gpt-oss-120b costs $0.10 per million input tokens and $0.50 per million output tokens; Nemotron 3 Ultra costs $0.60 and $2.40. Cost per solved task is known for gpt-oss-120b only.

Which has the bigger context window, gpt-oss-120b or Nemotron 3 Ultra?

Nemotron 3 Ultra, with 262K tokens against 131K.

How many benchmarks is the gpt-oss-120b vs Nemotron 3 Ultra comparison based on?

58 benchmarks have a result for both models as of October 22, 2026. gpt-oss-120b's coding index rests on 1 independent benchmark and Nemotron 3 Ultra's on 3. Where only one model has a result, the page says so instead of naming a winner.

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