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Nemotron 3 Ultra vs o3 Mini

Nemotron 3 Ultra leads o3 Mini on the Artificial Analysis Intelligence Index, 22.9 to 12.5, and Nemotron 3 Ultra costs 1.8x less per output token ($2.40 vs $4.40 per million). Updated October 22, 2026; 48 benchmarks have a result for both.

Replace Nemotron 3 Ultra Replace o3 Mini
Nemotron 3 UltraNVIDIA
Coding
30.0
Overall
53.1
Output $/M
$2.40
46
o3 MiniOpenAI
Coding
No data
Overall
38.0
Output $/M
$4.40
2
vs boards won of 48 shared

Nemotron 3 Ultra or o3 Mini: which to pick

Only Nemotron 3 Ultra has a coding score, 30.0 on the Vibe Coding Index; o3 Mini has none, so the two cannot be ranked on coding.

Pick o3 Mini for work measured by SciCode or WeirdML, where it leads.

Model ANemotron 3 UltraNVIDIA30.0/1003 independent benchmarksNo cost per solved taskModel Bo3 MiniOpenAINot benchmarkedNo coding benchmarkNo cost per solved task
Shared results
48
Nemotron 3 Ultra only
22
o3 Mini only
23
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
Nemotron 3 Ultra 30.0 from 3 benchmarks, o3 Mini not benchmarked.
Widest category
Agentic work, 52.0 points apart on average over 1 shared benchmark.
Widest single gap
τ²-Bench Telecom: Nemotron 3 Ultra 83.3% against o3 Mini 31.3%, 52.0 points apart on a 0 to 100 scale.
Output price
Nemotron 3 Ultra $2.40 against o3 Mini $4.40 per million output tokens, 1.8x apart.
Context window
Nemotron 3 Ultra takes 262K tokens, o3 Mini 200K.

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
CategoryNemotron 3 UltraBarso3 MiniTies
Coding42
Intelligence20
Agentic work10
Reasoning80
Math30
Knowledge80
General200
All shared boards462
CodingLike-for-likeSix of these boards feed the Vibe Coding Index42
Coding benchmarks for Nemotron 3 Ultra and o3 Mini
BenchmarkNemotron 3 Ultrao3 MiniLeader
Aider polyglotNot measured60.4%Only o3 Mini measured
SWE-bench VerifiedNot measured42.4%Only o3 Mini measured
SWE-bench LiteNot measured32.3%Only o3 Mini measured
AA Coding Index49.3Not measuredOnly Nemotron 3 Ultra measured
LiveCodeBench (Vals AI)86.0%71.5%Nemotron 3 Ultra
SWE-bench Verified (Vals AI)69.0%Not measuredOnly Nemotron 3 Ultra measured
Vibe Code Bench (Vals AI)7.6%Not measuredOnly Nemotron 3 Ultra measured
Code migration (Vals AI)4.9%Not measuredOnly Nemotron 3 Ultra measured
ProgramBench (Vals AI)0.0%Not measuredOnly Nemotron 3 Ultra measured
Terminal-Bench 2.1 (Vals AI)50.9%Not measuredOnly Nemotron 3 Ultra measured
LiveCodeBench (Artificial Analysis run)Not measured73.4%Only o3 Mini measured
SciCode40.3%42.8%o3 Mini
Terminal-Bench Hard (Artificial Analysis run)36.4%6.8%Nemotron 3 Ultra
FrontierCode13.6%Not measuredOnly Nemotron 3 Ultra measured
GSO-BenchNot measured1.3%Only o3 Mini measured
WeirdML43.5%43.7%o3 Mini
CybenchNot measured22.5%Only o3 Mini measured
LMArena Text: coding14681378Nemotron 3 Ultra
LMArena Text: software and IT14681364Nemotron 3 Ultra
SciCodeNot measured7.7%Only o3 Mini measured
Neither model has a result on the other 19 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Nemotron 3 Ultra and o3 Mini
BenchmarkNemotron 3 Ultrao3 MiniLeader
AA Intelligence Index22.912.5Nemotron 3 Ultra
Epoch Capabilities Index146.0140.2Nemotron 3 Ultra
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
Agentic work benchmarks for Nemotron 3 Ultra and o3 Mini
BenchmarkNemotron 3 Ultrao3 MiniLeader
AA Agentic Index20.1Not measuredOnly Nemotron 3 Ultra measured
Finance Agent (Vals AI)37.7%Not measuredOnly Nemotron 3 Ultra measured
Legal Research Bench (Vals AI)15.4%Not measuredOnly Nemotron 3 Ultra measured
Excel Modeling Benchmark (Vals AI)31.7%Not measuredOnly Nemotron 3 Ultra measured
τ²-Bench Telecom83.3%31.3%Nemotron 3 Ultra
APEX-Agents22.7%Not measuredOnly Nemotron 3 Ultra measured
Neither model has a result on the other 35 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index80
Reasoning benchmarks for Nemotron 3 Ultra and o3 Mini
BenchmarkNemotron 3 Ultrao3 MiniLeader
GPQA Diamond86.1%75.5%Nemotron 3 Ultra
GPQA Diamond (Artificial Analysis run)86.7%77.3%Nemotron 3 Ultra
Humanity's Last Exam (Artificial Analysis run)28.4%12.0%Nemotron 3 Ultra
GPQA Diamond (Epoch AI run)85.4%77.0%Nemotron 3 Ultra
ARC-AGINot measured34.5%Only o3 Mini measured
ARC-AGI-2Not measured3.0%Only o3 Mini measured
SimpleBenchNot measured22.8%Only o3 Mini measured
Chess puzzlesNot measured15.0%Only o3 Mini measured
Mystery game puzzles20.0%7.0%Nemotron 3 Ultra
LMArena Text: hard prompts14521365Nemotron 3 Ultra
LMArena Text: expert14721364Nemotron 3 Ultra
LMArena Text: hard prompts in English14531375Nemotron 3 Ultra
Neither model has a result on the other 10 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index30
Math benchmarks for Nemotron 3 Ultra and o3 Mini
BenchmarkNemotron 3 Ultrao3 MiniLeader
AIMENot measured86.5%Only o3 Mini measured
MATH 500 (Vals AI)Not measured91.8%Only o3 Mini measured
MGSM (Vals AI)Not measured91.3%Only o3 Mini measured
OTIS Mock AIME86.7%76.9%Nemotron 3 Ultra
FrontierMath, tiers 1 to 3Not measured18.6%Only o3 Mini measured
FrontierMath, tier 4Not measured0.0%Only o3 Mini measured
ProofBench2.0%Not measuredOnly Nemotron 3 Ultra measured
MATH level 5Not measured96.5%Only o3 Mini measured
LMArena Text: math14571396Nemotron 3 Ultra
LMArena Text: mathematical work14611399Nemotron 3 Ultra
Neither model has a result on the other 3 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index80
Knowledge benchmarks for Nemotron 3 Ultra and o3 Mini
BenchmarkNemotron 3 Ultrao3 MiniLeader
MMLU Pro85.8%78.7%Nemotron 3 Ultra
LegalBench (Vals AI)82.1%71.5%Nemotron 3 Ultra
CorpFin (Vals AI)65.5%45.3%Nemotron 3 Ultra
TaxEval (Vals AI)73.1%69.4%Nemotron 3 Ultra
MedQA (Vals AI)Not measured94.8%Only o3 Mini measured
MedCode (Vals AI)38.6%Not measuredOnly Nemotron 3 Ultra measured
MMLU Pro (Artificial Analysis run)Not measured80.2%Only o3 Mini measured
SimpleQA VerifiedNot measured15.3%Only o3 Mini measured
LMArena Text: science14651339Nemotron 3 Ultra
LMArena Text: medicine and healthcare14561330Nemotron 3 Ultra
LMArena Text: legal and government14521328Nemotron 3 Ultra
LMArena Text: business and finance14341313Nemotron 3 Ultra
Neither model has a result on the other 6 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
Web design benchmarks for Nemotron 3 Ultra and o3 Mini
BenchmarkNemotron 3 Ultrao3 MiniLeader
Design Arena: websites1145Not measuredOnly Nemotron 3 Ultra measured
Design Arena: UI components1136Not measuredOnly Nemotron 3 Ultra measured
Design Arena: game dev1138Not measuredOnly Nemotron 3 Ultra measured
Design Arena: data viz1142Not measuredOnly Nemotron 3 Ultra measured
Design Arena: 3D1131Not measuredOnly Nemotron 3 Ultra measured
Design Arena: all code categories1146Not measuredOnly Nemotron 3 Ultra measured
Design Arena: SVG1069Not measuredOnly Nemotron 3 Ultra measured
Design Arena: ASCII art1100Not measuredOnly 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 index200
General benchmarks for Nemotron 3 Ultra and o3 Mini
BenchmarkNemotron 3 Ultrao3 MiniLeader
IFBench81.4%67.1%Nemotron 3 Ultra
Long context reasoning (AA-LCR)79.3%43.0%Nemotron 3 Ultra
DTBench90.1%68.8%Nemotron 3 Ultra
LMCA36.9%19.0%Nemotron 3 Ultra
Fiction.LiveBenchNot measured50.0%Only o3 Mini measured
Creative writing (Lech Mazur)Not measured61.7%Only o3 Mini measured
LMArena Text14451337Nemotron 3 Ultra
LMArena Text: instruction following14181337Nemotron 3 Ultra
LMArena Text: creative writing13991286Nemotron 3 Ultra
LMArena Text: English14551351Nemotron 3 Ultra
LMArena Text: non-English14271319Nemotron 3 Ultra
LMArena Text: Chinese14971379Nemotron 3 Ultra
LMArena Text: German14721303Nemotron 3 Ultra
LMArena Text: JapaneseNot measured1286Only o3 Mini measured
LMArena Text: Korean13841313Nemotron 3 Ultra
LMArena Text: French14721334Nemotron 3 Ultra
LMArena Text: Spanish14551321Nemotron 3 Ultra
LMArena Text: Russian14171304Nemotron 3 Ultra
LMArena Text: Polish13851294Nemotron 3 Ultra
LMArena Text: multi-turn14111320Nemotron 3 Ultra
LMArena Text: longer queries14371343Nemotron 3 Ultra
LMArena Text: writing and language14061313Nemotron 3 Ultra
LMArena Text: entertainment and media13971283Nemotron 3 Ultra
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 Nemotron 3 Ultra and o3 Mini
BenchmarkNemotron 3 Ultrao3 MiniLeader
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 Ultra$0.0018Fits in one request
o3 Mini$0.0033Fits in one request

Nemotron 3 Ultra costs less

Repository review

50K input + 3K output tokens

Nemotron 3 Ultra$0.037Fits in one request
o3 Mini$0.068Fits in one request

Nemotron 3 Ultra costs less

Agent loop

200K input + 10K output tokens

Nemotron 3 Ultra$0.144Fits in one request
o3 Mini$0.264Exceeds the context window

Nemotron 3 Ultra 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 Nemotron 3 Ultra and o3 Mini
SpecificationNVIDIA Nemotron 3 UltraOpenAI o3 Mini
MakerNVIDIAOpenAI
WeightsOpen weightsNo public weights listed
ReleasedJune 4, 2026January 31, 2025
Context window262K200K
Input $/Mtok$0.60$1.10
Output $/Mtok$2.40$4.40
Coding index30.0Not benchmarked
Independent measurements behind it30
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Nemotron 3 Ultra better than o3 Mini for coding?

Only Nemotron 3 Ultra has a coding score, 30.0 on the Vibe Coding Index; o3 Mini has none, so the two cannot be ranked on coding. Pick o3 Mini for work measured by SciCode or WeirdML, where it leads.

Which is cheaper, Nemotron 3 Ultra or o3 Mini?

Nemotron 3 Ultra costs $0.60 per million input tokens and $2.40 per million output tokens; o3 Mini costs $1.10 and $4.40. Cost per solved task is known for neither of them.

Which has the bigger context window, Nemotron 3 Ultra or o3 Mini?

Nemotron 3 Ultra, with 262K tokens against 200K.

How many benchmarks is the Nemotron 3 Ultra vs o3 Mini comparison based on?

48 benchmarks have a result for both models as of October 22, 2026. Nemotron 3 Ultra's coding index rests on 3 independent benchmarks and o3 Mini's on 0. Where only one model has a result, the page says so instead of naming a winner.

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