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gpt-oss-120b vs Nemotron 3 Nano 30B A3B

gpt-oss-120b leads Nemotron 3 Nano 30B A3B on the Artificial Analysis Intelligence Index, 11.6 to 8.9, and Nemotron 3 Nano 30B A3B costs 2.3x less per output token ($0.22 vs $0.50 per million). Updated October 23, 2026; 42 benchmarks have a result for both.

Replace gpt-oss-120b Replace Nemotron 3 Nano 30B A3B
gpt-oss-120bOpenAI
Coding
No data
Overall
50.0
Output $/M
$0.50
37
Nemotron 3 Nano 30B A3BNVIDIA
Coding
No data
Overall
No data
Output $/M
$0.22
5
vs boards won of 42 shared

gpt-oss-120b or Nemotron 3 Nano 30B A3B: which to pick

Neither model has a coding score yet, so the two cannot be ranked on coding.

Pick gpt-oss-120b for work measured by LMArena Text: hard prompts in English or IFBench, where it leads.

Model Agpt-oss-120bOpenAINot benchmarked1 independent benchmark$0.51 per solved taskModel BNemotron 3 Nano 30B A3BNVIDIANot benchmarkedNo coding benchmarkNo cost per solved task
Shared results
42
gpt-oss-120b only
43
Nemotron 3 Nano 30B A3B only
0
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.

At a glance

Coding index
gpt-oss-120b not benchmarked, Nemotron 3 Nano 30B A3B not benchmarked.
Widest category
Agentic work, 13.8 points apart on average over 2 shared benchmarks.
Widest single gap
τ²-Bench Telecom: gpt-oss-120b 65.8% against Nemotron 3 Nano 30B A3B 40.9%, 24.9 points apart on a 0 to 100 scale.
Output price
gpt-oss-120b $0.50 against Nemotron 3 Nano 30B A3B $0.22 per million output tokens, 2.3x apart.
Context window
gpt-oss-120b takes 131K tokens, Nemotron 3 Nano 30B A3B 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 Nano 30B A3BTies
Coding60
Intelligence10
Agentic work20
Reasoning41
Math40
Knowledge50
General154
All shared boards375
CodingLike-for-likeSix of these boards feed the Vibe Coding Index60
Coding benchmarks for gpt-oss-120b and Nemotron 3 Nano 30B A3B
Benchmarkgpt-oss-120bNemotron 3 Nano 30B A3BLeader
Aider polyglot41.8%Not measuredOnly gpt-oss-120b measured
SWE-bench Verified26.0%Not measuredOnly gpt-oss-120b measured
AA Coding Index30.414.4gpt-oss-120b
LiveCodeBench (Vals AI)83.2%Not measuredOnly gpt-oss-120b measured
SWE-bench Verified (Vals AI)33.6%Not measuredOnly gpt-oss-120b measured
LiveCodeBench (Artificial Analysis run)87.8%74.1%gpt-oss-120b
SciCode34.0%30.6%gpt-oss-120b
Terminal-Bench Hard (Artificial Analysis run)23.5%13.6%gpt-oss-120b
Terminal-Bench18.7%Not measuredOnly gpt-oss-120b measured
WeirdML48.2%Not measuredOnly gpt-oss-120b measured
ALE-Bench575.6Not measuredOnly gpt-oss-120b measured
LMArena Text: coding13791378gpt-oss-120b
LMArena Text: software and IT13871382gpt-oss-120b
SciCode7.7%Not measuredOnly gpt-oss-120b measured
Neither model has a result on the other 29 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for gpt-oss-120b and Nemotron 3 Nano 30B A3B
Benchmarkgpt-oss-120bNemotron 3 Nano 30B A3BLeader
AA Intelligence Index11.68.9gpt-oss-120b
Epoch Capabilities Index139.8Not measuredOnly gpt-oss-120b measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index20
Agentic work benchmarks for gpt-oss-120b and Nemotron 3 Nano 30B A3B
Benchmarkgpt-oss-120bNemotron 3 Nano 30B A3BLeader
AA Agentic Index3.71.0gpt-oss-120b
τ²-Bench Telecom65.8%40.9%gpt-oss-120b
APEX-Agents4.4%Not measuredOnly gpt-oss-120b measured
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
Neither model has a result on the other 36 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index41
Reasoning benchmarks for gpt-oss-120b and Nemotron 3 Nano 30B A3B
Benchmarkgpt-oss-120bNemotron 3 Nano 30B A3BLeader
GPQA Diamond78.5%Not measuredOnly gpt-oss-120b measured
GPQA Diamond (Artificial Analysis run)78.2%75.7%gpt-oss-120b
Humanity's Last Exam (Artificial Analysis run)19.6%11.4%gpt-oss-120b
GPQA Diamond (Epoch AI run)75.8%Not measuredOnly gpt-oss-120b measured
SimpleBench22.1%Not measuredOnly gpt-oss-120b measured
Mystery game puzzles2.0%Not measuredOnly gpt-oss-120b measured
LMArena Text: hard prompts13631348gpt-oss-120b
LMArena Text: expert13561356gpt-oss-120b
LMArena Text: hard prompts in English13681376Nemotron 3 Nano 30B A3B
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 index40
Math benchmarks for gpt-oss-120b and Nemotron 3 Nano 30B A3B
Benchmarkgpt-oss-120bNemotron 3 Nano 30B A3BLeader
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 Index93.491.0gpt-oss-120b
AIME 2025 (Artificial Analysis run)93.4%91.0%gpt-oss-120b
OTIS Mock AIME88.9%Not measuredOnly gpt-oss-120b measured
LMArena Text: math13891371gpt-oss-120b
LMArena Text: mathematical work13871375gpt-oss-120b
MathArena15.1%Not measuredOnly gpt-oss-120b measured
Neither model has a result on the other 5 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index50
Knowledge benchmarks for gpt-oss-120b and Nemotron 3 Nano 30B A3B
Benchmarkgpt-oss-120bNemotron 3 Nano 30B A3BLeader
MMLU Pro79.2%Not measuredOnly gpt-oss-120b measured
LegalBench (Vals AI)75.9%Not measuredOnly gpt-oss-120b measured
CaseLaw (Vals AI)48.8%Not measuredOnly gpt-oss-120b measured
CorpFin (Vals AI)58.2%Not measuredOnly gpt-oss-120b measured
TaxEval (Vals AI)71.6%Not measuredOnly gpt-oss-120b measured
MedQA (Vals AI)91.4%Not measuredOnly gpt-oss-120b measured
MMLU Pro (Artificial Analysis run)80.8%79.4%gpt-oss-120b
LMArena Text: science13821353gpt-oss-120b
LMArena Text: medicine and healthcare13881349gpt-oss-120b
LMArena Text: legal and government13541341gpt-oss-120b
LMArena Text: business and finance13591345gpt-oss-120b
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 7 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index6 boards, none shared
Web design benchmarks for gpt-oss-120b and Nemotron 3 Nano 30B A3B
Benchmarkgpt-oss-120bNemotron 3 Nano 30B A3BLeader
Design Arena: websites968Not measuredOnly gpt-oss-120b measured
Design Arena: UI components924Not measuredOnly gpt-oss-120b measured
Design Arena: game dev991Not measuredOnly gpt-oss-120b measured
Design Arena: data viz988Not measuredOnly gpt-oss-120b measured
Design Arena: 3D902Not measuredOnly gpt-oss-120b measured
Design Arena: all code categories962Not measuredOnly gpt-oss-120b measured
Neither model has a result on the other 3 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index154
General benchmarks for gpt-oss-120b and Nemotron 3 Nano 30B A3B
Benchmarkgpt-oss-120bNemotron 3 Nano 30B A3BLeader
IFBench69.0%71.1%Nemotron 3 Nano 30B A3B
Long context reasoning (AA-LCR)52.0%38.0%gpt-oss-120b
DTBench76.3%Not measuredOnly gpt-oss-120b measured
LMCA22.1%Not measuredOnly gpt-oss-120b measured
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 Text13661348gpt-oss-120b
LMArena Text: instruction following13181304gpt-oss-120b
LMArena Text: creative writing12741270gpt-oss-120b
LMArena Text: English13751378Nemotron 3 Nano 30B A3B
LMArena Text: non-English13501320gpt-oss-120b
LMArena Text: Chinese13851383gpt-oss-120b
LMArena Text: German13531348gpt-oss-120b
LMArena Text: Japanese13311269gpt-oss-120b
LMArena Text: Korean12831269gpt-oss-120b
LMArena Text: French13691396Nemotron 3 Nano 30B A3B
LMArena Text: Spanish13891376gpt-oss-120b
LMArena Text: Russian13431304gpt-oss-120b
LMArena Text: Polish13531302gpt-oss-120b
LMArena Text: multi-turn13401319gpt-oss-120b
LMArena Text: longer queries13191300gpt-oss-120b
LMArena Text: writing and language13061284gpt-oss-120b
LMArena Text: entertainment and media12921294Nemotron 3 Nano 30B A3B
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 Nano 30B A3B
Benchmarkgpt-oss-120bNemotron 3 Nano 30B A3BLeader
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 Nano 30B A3B$0.0002Fits in one request

Nemotron 3 Nano 30B A3B costs less

Repository review

50K input + 3K output tokens

gpt-oss-120b$0.0065Fits in one request
Nemotron 3 Nano 30B A3B$0.0034Fits in one request

Nemotron 3 Nano 30B A3B costs less

Agent loop

200K input + 10K output tokens

gpt-oss-120b$0.025Exceeds the context window
Nemotron 3 Nano 30B A3B$0.013Fits in one request

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.

Specifications of gpt-oss-120b and Nemotron 3 Nano 30B A3B
SpecificationOpenAI gpt-oss-120bNVIDIA Nemotron 3 Nano 30B A3B
MakerOpenAINVIDIA
WeightsOpen weightsOpen weights
ReleasedAugust 5, 2025December 14, 2025
Context window131K262K
Input $/Mtok$0.10$0.055
Output $/Mtok$0.50$0.22
Coding indexNot benchmarkedNot benchmarked
Independent measurements behind it10
Cost per solved task$0.51Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is gpt-oss-120b better than Nemotron 3 Nano 30B A3B for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Pick gpt-oss-120b for work measured by LMArena Text: hard prompts in English or IFBench, where it leads.

Which is cheaper, gpt-oss-120b or Nemotron 3 Nano 30B A3B?

gpt-oss-120b costs $0.10 per million input tokens and $0.50 per million output tokens; Nemotron 3 Nano 30B A3B costs $0.055 and $0.22. Cost per solved task is known for gpt-oss-120b only.

Which has the bigger context window, gpt-oss-120b or Nemotron 3 Nano 30B A3B?

Nemotron 3 Nano 30B A3B, with 262K tokens against 131K.

How many benchmarks is the gpt-oss-120b vs Nemotron 3 Nano 30B A3B comparison based on?

42 benchmarks have a result for both models as of October 23, 2026. gpt-oss-120b's coding index rests on 1 independent benchmark 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.

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