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GPT-5.4 Nano vs Nemotron 3 Ultra

GPT-5.4 Nano leads Nemotron 3 Ultra on coding, 44.8 to 30.0 on the Vibe Coding Index, and GPT-5.4 Nano costs 1.9x less per output token ($1.25 vs $2.40 per million). Updated October 22, 2026; 59 benchmarks have a result for both.

Replace GPT-5.4 Nano Replace Nemotron 3 Ultra
GPT-5.4 NanoOpenAI
Coding
44.8
Overall
45.7
Output $/M
$1.25
13
Nemotron 3 UltraNVIDIA
Coding
30.0
Overall
53.1
Output $/M
$2.40
46
vs boards won of 59 shared

GPT-5.4 Nano or Nemotron 3 Ultra: which to pick

Pick GPT-5.4 Nano for coding: it scores 44.8 on the Vibe Coding Index against 30.0 for Nemotron 3 Ultra, though on 2 benchmarks against 3.

Pick Nemotron 3 Ultra for work measured by LiveCodeBench (Vals AI) or Terminal-Bench 2.1 (Vals AI), where it leads.

Model AGPT-5.4 NanoOpenAI44.8/1002 independent benchmarks$0.14 per solved taskModel BNemotron 3 UltraNVIDIA30.0/1003 independent benchmarksNo cost per solved task
Shared results
59
GPT-5.4 Nano only
26
Nemotron 3 Ultra only
12
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-5.4 Nano 44.8 from 2 benchmarks, Nemotron 3 Ultra 30.0 from 3 benchmarks.
Widest category
General, 10.1 points apart on average over 20 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): GPT-5.4 Nano 26.1% against Nemotron 3 Ultra 7.6%, 18.5 points apart on a 0 to 100 scale.
Output price
GPT-5.4 Nano $1.25 against Nemotron 3 Ultra $2.40 per million output tokens, 1.9x apart.
Context window
GPT-5.4 Nano takes 400K 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-5.4 NanoBarsNemotron 3 UltraTies
Coding74
Intelligence11
Agentic work23
Reasoning08
Math22
Knowledge18
General020
All shared boards1346
CodingLike-for-likeSix of these boards feed the Vibe Coding Index74
Coding benchmarks for GPT-5.4 Nano and Nemotron 3 Ultra
BenchmarkGPT-5.4 NanoNemotron 3 UltraLeader
AA Coding Index56.149.3GPT-5.4 Nano
LiveCodeBench (Vals AI)84.0%86.0%Nemotron 3 Ultra
SWE-bench Verified (Vals AI)69.8%69.0%GPT-5.4 Nano
Vibe Code Bench (Vals AI)26.1%7.6%GPT-5.4 Nano
Code migration (Vals AI)14.5%4.9%GPT-5.4 Nano
ProgramBench (Vals AI)Not measured0.0%Only Nemotron 3 Ultra measured
Terminal-Bench 2.1 (Vals AI)41.6%50.9%Nemotron 3 Ultra
SciCode47.2%40.3%GPT-5.4 Nano
Terminal-Bench Hard (Artificial Analysis run)42.4%36.4%GPT-5.4 Nano
FrontierCodeNot measured13.6%Only Nemotron 3 Ultra measured
WeirdML49.2%43.5%GPT-5.4 Nano
ALE-Bench1004.5Not measuredOnly GPT-5.4 Nano measured
LMArena Text: coding14041468Nemotron 3 Ultra
LMArena Text: software and IT14021468Nemotron 3 Ultra
Neither model has a result on the other 29 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index11
Intelligence benchmarks for GPT-5.4 Nano and Nemotron 3 Ultra
BenchmarkGPT-5.4 NanoNemotron 3 UltraLeader
AA Intelligence Index20.722.9Nemotron 3 Ultra
Epoch Capabilities Index146.0146.0GPT-5.4 Nano
Agentic workLike-for-likePublic boards, shown as published, kept out of the index23
Agentic work benchmarks for GPT-5.4 Nano and Nemotron 3 Ultra
BenchmarkGPT-5.4 NanoNemotron 3 UltraLeader
AA Agentic Index16.020.1Nemotron 3 Ultra
Finance Agent (Vals AI)38.2%37.7%GPT-5.4 Nano
Tax Agent Bench (Vals AI)5.0%Not measuredOnly GPT-5.4 Nano measured
Legal Research Bench (Vals AI)6.3%15.4%Nemotron 3 Ultra
Excel Modeling Benchmark (Vals AI)44.8%31.7%GPT-5.4 Nano
τ²-Bench Telecom76.0%83.3%Nemotron 3 Ultra
APEX-AgentsNot measured22.7%Only Nemotron 3 Ultra measured
MCP AtlasNot measured63.1%Only Nemotron 3 Ultra measured
Neither model has a result on the other 34 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index08
Reasoning benchmarks for GPT-5.4 Nano and Nemotron 3 Ultra
BenchmarkGPT-5.4 NanoNemotron 3 UltraLeader
GPQA Diamond77.5%86.1%Nemotron 3 Ultra
MMMU Pro (Vals AI)73.6%Not measuredOnly GPT-5.4 Nano measured
GPQA Diamond (Artificial Analysis run)81.7%86.7%Nemotron 3 Ultra
Humanity's Last Exam (Artificial Analysis run)28.3%28.4%Nemotron 3 Ultra
GPQA Diamond (Epoch AI run)78.5%85.4%Nemotron 3 Ultra
ARC-AGI51.5%Not measuredOnly GPT-5.4 Nano measured
ARC-AGI-25.7%Not measuredOnly GPT-5.4 Nano measured
Chess puzzles45.0%Not measuredOnly GPT-5.4 Nano measured
Mystery game puzzles9.0%20.0%Nemotron 3 Ultra
LMArena Text: hard prompts13811452Nemotron 3 Ultra
LMArena Text: expert13961472Nemotron 3 Ultra
LMArena Text: hard prompts in English13871453Nemotron 3 Ultra
LMArena Vision: diagrams1210Not measuredOnly GPT-5.4 Nano measured
LMArena Vision: homework1225Not measuredOnly GPT-5.4 Nano measured
Kagi LLM Benchmark39.7%Not measuredOnly GPT-5.4 Nano measured
Neither model has a result on the other 8 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index22
Math benchmarks for GPT-5.4 Nano and Nemotron 3 Ultra
BenchmarkGPT-5.4 NanoNemotron 3 UltraLeader
AIME88.8%Not measuredOnly GPT-5.4 Nano measured
OTIS Mock AIME87.8%86.7%GPT-5.4 Nano
FrontierMath, tiers 1 to 344.9%Not measuredOnly GPT-5.4 Nano measured
FrontierMath, tier 412.2%Not measuredOnly GPT-5.4 Nano measured
ProofBench5.0%2.0%GPT-5.4 Nano
LMArena Text: math14051457Nemotron 3 Ultra
LMArena Text: mathematical work14091461Nemotron 3 Ultra
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index18
Knowledge benchmarks for GPT-5.4 Nano and Nemotron 3 Ultra
BenchmarkGPT-5.4 NanoNemotron 3 UltraLeader
MMLU Pro77.2%85.8%Nemotron 3 Ultra
LegalBench (Vals AI)77.9%82.1%Nemotron 3 Ultra
CaseLaw (Vals AI)51.9%Not measuredOnly GPT-5.4 Nano measured
CorpFin (Vals AI)61.2%65.5%Nemotron 3 Ultra
TaxEval (Vals AI)67.4%73.1%Nemotron 3 Ultra
MortgageTax (Vals AI)59.1%Not measuredOnly GPT-5.4 Nano measured
MedCode (Vals AI)41.0%38.6%GPT-5.4 Nano
SimpleQA Verified11.7%Not measuredOnly GPT-5.4 Nano measured
LMArena Text: science13741465Nemotron 3 Ultra
LMArena Text: medicine and healthcare13691456Nemotron 3 Ultra
LMArena Text: legal and government13681452Nemotron 3 Ultra
LMArena Text: business and finance13661434Nemotron 3 Ultra
Neither model has a result on the other 8 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
Web design benchmarks for GPT-5.4 Nano and Nemotron 3 Ultra
BenchmarkGPT-5.4 NanoNemotron 3 UltraLeader
Design Arena: websitesNot measured1145Only Nemotron 3 Ultra measured
Design Arena: UI componentsNot measured1135Only Nemotron 3 Ultra measured
Design Arena: game devNot measured1138Only Nemotron 3 Ultra measured
Design Arena: data vizNot measured1141Only Nemotron 3 Ultra measured
Design Arena: 3DNot measured1131Only Nemotron 3 Ultra measured
Design Arena: all code categoriesNot measured1146Only Nemotron 3 Ultra measured
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-5.4 Nano and Nemotron 3 Ultra
BenchmarkGPT-5.4 NanoNemotron 3 UltraLeader
SAGE (Vals AI)38.1%Not measuredOnly GPT-5.4 Nano measured
MedScribe (Vals AI)77.1%Not measuredOnly GPT-5.4 Nano measured
Vals Multimodal Index47.6%Not measuredOnly GPT-5.4 Nano measured
IFBench75.9%81.4%Nemotron 3 Ultra
Long context reasoning (AA-LCR)76.7%79.3%Nemotron 3 Ultra
DTBench80.3%90.1%Nemotron 3 Ultra
LMCA36.9%36.9%Nemotron 3 Ultra
LMArena Text13721445Nemotron 3 Ultra
LMArena Text: instruction following13621418Nemotron 3 Ultra
LMArena Text: creative writing13151399Nemotron 3 Ultra
LMArena Vision1196Not measuredOnly GPT-5.4 Nano measured
LMArena Text: English13811455Nemotron 3 Ultra
LMArena Text: non-English13591427Nemotron 3 Ultra
LMArena Text: Chinese13911497Nemotron 3 Ultra
LMArena Text: German13681472Nemotron 3 Ultra
LMArena Text: Japanese1343Not measuredOnly GPT-5.4 Nano measured
LMArena Text: Korean13211384Nemotron 3 Ultra
LMArena Text: French13951472Nemotron 3 Ultra
LMArena Text: Spanish13711455Nemotron 3 Ultra
LMArena Text: Russian13631417Nemotron 3 Ultra
LMArena Text: Polish13661385Nemotron 3 Ultra
LMArena Text: multi-turn13821411Nemotron 3 Ultra
LMArena Text: longer queries13651437Nemotron 3 Ultra
LMArena Text: writing and language13381406Nemotron 3 Ultra
LMArena Text: entertainment and media13251397Nemotron 3 Ultra
LMArena Vision: English1202Not measuredOnly GPT-5.4 Nano measured
LMArena Vision: Chinese1232Not measuredOnly GPT-5.4 Nano measured
LMArena Vision: reading text1204Not measuredOnly GPT-5.4 Nano measured
LMArena Vision: humor1161Not measuredOnly GPT-5.4 Nano measured
LMArena Vision: recognizing things1141Not measuredOnly GPT-5.4 Nano measured
LMArena Vision: creative writing1159Not measuredOnly GPT-5.4 Nano measured
Neither model has a result on the other 17 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GPT-5.4 Nano and Nemotron 3 Ultra
BenchmarkGPT-5.4 NanoNemotron 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-5.4 Nano$0.0008Fits in one request
Nemotron 3 Ultra$0.0018Fits in one request

GPT-5.4 Nano costs less

Repository review

50K input + 3K output tokens

GPT-5.4 Nano$0.014Fits in one request
Nemotron 3 Ultra$0.037Fits in one request

GPT-5.4 Nano costs less

Agent loop

200K input + 10K output tokens

GPT-5.4 Nano$0.052Fits in one request
Nemotron 3 Ultra$0.144Fits in one request

GPT-5.4 Nano 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-5.4 Nano and Nemotron 3 Ultra
SpecificationOpenAI GPT-5.4 NanoNVIDIA Nemotron 3 Ultra
MakerOpenAINVIDIA
WeightsNo public weights listedOpen weights
ReleasedMarch 17, 2026June 4, 2026
Context window400K262K
Input $/Mtok$0.20$0.60
Output $/Mtok$1.25$2.40
Coding index44.830.0
Independent measurements behind it23
Cost per solved task$0.14Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-5.4 Nano better than Nemotron 3 Ultra for coding?

Pick GPT-5.4 Nano for coding: it scores 44.8 on the Vibe Coding Index against 30.0 for Nemotron 3 Ultra, though on 2 benchmarks against 3. Pick Nemotron 3 Ultra for work measured by LiveCodeBench (Vals AI) or Terminal-Bench 2.1 (Vals AI), where it leads.

Which is cheaper, GPT-5.4 Nano or Nemotron 3 Ultra?

GPT-5.4 Nano costs $0.20 per million input tokens and $1.25 per million output tokens; Nemotron 3 Ultra costs $0.60 and $2.40. Cost per solved task is known for GPT-5.4 Nano only.

Which has the bigger context window, GPT-5.4 Nano or Nemotron 3 Ultra?

GPT-5.4 Nano, with 400K tokens against 262K.

How many benchmarks is the GPT-5.4 Nano vs Nemotron 3 Ultra comparison based on?

59 benchmarks have a result for both models as of October 22, 2026. GPT-5.4 Nano's coding index rests on 2 independent benchmarks 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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<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/gpt-5-4-nano-vs-nvidia-nemotron-3-ultra-550b-a55b">LLMBenchmark.ai, GPT-5.4 Nano vs Nemotron 3 Ultra</a></p>