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GPT-5.4 Mini vs Nemotron 3 Ultra

GPT-5.4 Mini leads Nemotron 3 Ultra on coding, 35.8 to 30.0 on the Vibe Coding Index, and Nemotron 3 Ultra costs 1.9x less per output token ($2.40 vs $4.50 per million). Updated October 22, 2026; 60 benchmarks have a result for both.

Replace GPT-5.4 Mini Replace Nemotron 3 Ultra
GPT-5.4 MiniOpenAI
Coding
35.8
Overall
44.0
Output $/M
$4.50
21
Nemotron 3 UltraNVIDIA
Coding
30.0
Overall
53.1
Output $/M
$2.40
37
vs boards won of 60 shared, 2 tied

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

Pick GPT-5.4 Mini for coding: it scores 35.8 on the Vibe Coding Index against 30.0 for Nemotron 3 Ultra.

Pick Nemotron 3 Ultra for output tokens 1.9x cheaper ($2.40 vs $4.50 per million) and work measured by LiveCodeBench (Vals AI) or LMArena Text: coding, where it leads.

Model AGPT-5.4 MiniOpenAI35.8/1005 independent benchmarks$0.70 per solved taskModel BNemotron 3 UltraNVIDIA30.0/1003 independent benchmarksNo cost per solved task
Shared results
60
GPT-5.4 Mini only
30
Nemotron 3 Ultra only
11
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 Mini 35.8 from 5 benchmarks, Nemotron 3 Ultra 30.0 from 3 benchmarks.
Widest category
Coding, 11.0 points apart on average over 13 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): GPT-5.4 Mini 48.0% against Nemotron 3 Ultra 7.6%, 40.3 points apart on a 0 to 100 scale.
Output price
GPT-5.4 Mini $4.50 against Nemotron 3 Ultra $2.40 per million output tokens, 1.9x apart.
Context window
GPT-5.4 Mini 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 MiniBarsNemotron 3 UltraTies
Coding931 tie
Intelligence20
Agentic work231 tie
Reasoning26
Math22
Knowledge07
General416
All shared boards21372 ties
CodingLike-for-likeSix of these boards feed the Vibe Coding Index93
Coding benchmarks for GPT-5.4 Mini and Nemotron 3 Ultra
BenchmarkGPT-5.4 MiniNemotron 3 UltraLeader
LMArena WebDev1397Not measuredOnly GPT-5.4 Mini measured
AA Coding Index56.149.3GPT-5.4 Mini
LiveCodeBench (Vals AI)81.5%86.0%Nemotron 3 Ultra
SWE-bench Verified (Vals AI)73.0%69.0%GPT-5.4 Mini
Terminal-Bench 4 (Vals AI)2.5%Not measuredOnly GPT-5.4 Mini measured
Vibe Code Bench (Vals AI)48.0%7.6%GPT-5.4 Mini
Code migration (Vals AI)12.9%4.9%GPT-5.4 Mini
ProgramBench (Vals AI)0.0%0.0%Tie
Terminal-Bench 2.1 (Vals AI)54.7%50.9%GPT-5.4 Mini
SciCode52.1%40.3%GPT-5.4 Mini
Terminal-Bench Hard (Artificial Analysis run)52.3%36.4%GPT-5.4 Mini
FrontierCode27.0%13.6%GPT-5.4 Mini
WeirdML60.3%43.5%GPT-5.4 Mini
ALE-Bench1188.6Not measuredOnly GPT-5.4 Mini measured
LMArena Text: coding14381468Nemotron 3 Ultra
LMArena Text: software and IT14361468Nemotron 3 Ultra
LMArena WebDev: React1386Not measuredOnly GPT-5.4 Mini measured
LMArena WebDev: HTML1419Not measuredOnly GPT-5.4 Mini measured
Neither model has a result on the other 25 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for GPT-5.4 Mini and Nemotron 3 Ultra
BenchmarkGPT-5.4 MiniNemotron 3 UltraLeader
AA Intelligence Index24.122.9GPT-5.4 Mini
Epoch Capabilities Index148.7146.0GPT-5.4 Mini
Agentic workLike-for-likePublic boards, shown as published, kept out of the index23
Agentic work benchmarks for GPT-5.4 Mini and Nemotron 3 Ultra
BenchmarkGPT-5.4 MiniNemotron 3 UltraLeader
AA Agentic Index17.920.1Nemotron 3 Ultra
Finance Agent (Vals AI)45.4%37.7%GPT-5.4 Mini
Tax Agent Bench (Vals AI)8.8%Not measuredOnly GPT-5.4 Mini measured
Legal Research Bench (Vals AI)12.5%15.4%Nemotron 3 Ultra
Excel Modeling Benchmark (Vals AI)45.4%31.7%GPT-5.4 Mini
τ²-Bench Telecom83.3%83.3%Tie
APEX-AgentsNot measured22.7%Only Nemotron 3 Ultra measured
DeepResearch Bench36.3%Not measuredOnly GPT-5.4 Mini measured
MCP Atlas56.7%63.1%Nemotron 3 Ultra
Neither model has a result on the other 33 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index26
Reasoning benchmarks for GPT-5.4 Mini and Nemotron 3 Ultra
BenchmarkGPT-5.4 MiniNemotron 3 UltraLeader
GPQA Diamond83.1%86.1%Nemotron 3 Ultra
MMMU Pro (Vals AI)79.3%Not measuredOnly GPT-5.4 Mini measured
GPQA Diamond (Artificial Analysis run)87.5%86.7%GPT-5.4 Mini
Humanity's Last Exam (Artificial Analysis run)28.1%28.4%Nemotron 3 Ultra
GPQA Diamond (Epoch AI run)86.9%85.4%GPT-5.4 Mini
ARC-AGI63.7%Not measuredOnly GPT-5.4 Mini measured
ARC-AGI-218.9%Not measuredOnly GPT-5.4 Mini measured
Chess puzzles23.0%Not measuredOnly GPT-5.4 Mini measured
Mystery game puzzles11.0%20.0%Nemotron 3 Ultra
LMArena Text: hard prompts14241452Nemotron 3 Ultra
LMArena Text: expert14351472Nemotron 3 Ultra
LMArena Text: hard prompts in English14201453Nemotron 3 Ultra
LMArena Vision: diagrams1266Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: homework1285Not measuredOnly GPT-5.4 Mini measured
Kagi LLM Benchmark37.9%Not measuredOnly GPT-5.4 Mini 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 Mini and Nemotron 3 Ultra
BenchmarkGPT-5.4 MiniNemotron 3 UltraLeader
AIME95.6%Not measuredOnly GPT-5.4 Mini measured
OTIS Mock AIME88.9%86.7%GPT-5.4 Mini
FrontierMath, tiers 1 to 351.2%Not measuredOnly GPT-5.4 Mini measured
FrontierMath, tier 49.8%Not measuredOnly GPT-5.4 Mini measured
ProofBench21.0%2.0%GPT-5.4 Mini
LMArena Text: math14181457Nemotron 3 Ultra
LMArena Text: mathematical work14291461Nemotron 3 Ultra
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index07
Knowledge benchmarks for GPT-5.4 Mini and Nemotron 3 Ultra
BenchmarkGPT-5.4 MiniNemotron 3 UltraLeader
MMLU Pro84.5%85.8%Nemotron 3 Ultra
LegalBench (Vals AI)Not measured82.1%Only Nemotron 3 Ultra measured
CaseLaw (Vals AI)51.7%Not measuredOnly GPT-5.4 Mini measured
CorpFin (Vals AI)60.9%65.5%Nemotron 3 Ultra
TaxEval (Vals AI)71.2%73.1%Nemotron 3 Ultra
MortgageTax (Vals AI)63.5%Not measuredOnly GPT-5.4 Mini measured
MedCode (Vals AI)Not measured38.6%Only Nemotron 3 Ultra measured
SimpleQA Verified29.4%Not measuredOnly GPT-5.4 Mini measured
LMArena Text: science14171465Nemotron 3 Ultra
LMArena Text: medicine and healthcare13951456Nemotron 3 Ultra
LMArena Text: legal and government14141452Nemotron 3 Ultra
LMArena Text: business and finance14181434Nemotron 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 Mini and Nemotron 3 Ultra
BenchmarkGPT-5.4 MiniNemotron 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 index416
General benchmarks for GPT-5.4 Mini and Nemotron 3 Ultra
BenchmarkGPT-5.4 MiniNemotron 3 UltraLeader
SAGE (Vals AI)50.8%Not measuredOnly GPT-5.4 Mini measured
Vals Multimodal Index54.2%Not measuredOnly GPT-5.4 Mini measured
IFBench73.3%81.4%Nemotron 3 Ultra
Long context reasoning (AA-LCR)77.0%79.3%Nemotron 3 Ultra
DTBench80.0%90.1%Nemotron 3 Ultra
LMCA40.8%36.9%GPT-5.4 Mini
LMArena Text14121445Nemotron 3 Ultra
LMArena Text: instruction following14051418Nemotron 3 Ultra
LMArena Text: creative writing13701399Nemotron 3 Ultra
LMArena Vision1245Not measuredOnly GPT-5.4 Mini measured
LMArena Text: English14121455Nemotron 3 Ultra
LMArena Text: non-English14051427Nemotron 3 Ultra
LMArena Text: Chinese14461497Nemotron 3 Ultra
LMArena Text: German14081472Nemotron 3 Ultra
LMArena Text: Japanese1375Not measuredOnly GPT-5.4 Mini measured
LMArena Text: Korean13701384Nemotron 3 Ultra
LMArena Text: French14411472Nemotron 3 Ultra
LMArena Text: Spanish14051455Nemotron 3 Ultra
LMArena Text: Russian14171417GPT-5.4 Mini
LMArena Text: Polish14151385GPT-5.4 Mini
LMArena Text: multi-turn14291411GPT-5.4 Mini
LMArena Text: longer queries14081437Nemotron 3 Ultra
LMArena Text: writing and language13931406Nemotron 3 Ultra
LMArena Text: entertainment and media13731397Nemotron 3 Ultra
LMArena Vision: English1244Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: Chinese1286Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: reading text1253Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: humor1235Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: recognizing things1218Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: creative writing1222Not measuredOnly GPT-5.4 Mini measured
Neither model has a result on the other 18 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GPT-5.4 Mini and Nemotron 3 Ultra
BenchmarkGPT-5.4 MiniNemotron 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 Mini$0.0030Fits in one request
Nemotron 3 Ultra$0.0018Fits in one request

Nemotron 3 Ultra costs less

Repository review

50K input + 3K output tokens

GPT-5.4 Mini$0.051Fits in one request
Nemotron 3 Ultra$0.037Fits in one request

Nemotron 3 Ultra costs less

Agent loop

200K input + 10K output tokens

GPT-5.4 Mini$0.195Fits in one request
Nemotron 3 Ultra$0.144Fits in one request

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 GPT-5.4 Mini and Nemotron 3 Ultra
SpecificationOpenAI GPT-5.4 MiniNVIDIA Nemotron 3 Ultra
MakerOpenAINVIDIA
WeightsNo public weights listedOpen weights
ReleasedMarch 17, 2026June 4, 2026
Context window400K262K
Input $/Mtok$0.75$0.60
Output $/Mtok$4.50$2.40
Coding index35.830.0
Independent measurements behind it53
Cost per solved task$0.70Not computable
SourceOpenRouter listingOpenRouter listing

Questions

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

Pick GPT-5.4 Mini for coding: it scores 35.8 on the Vibe Coding Index against 30.0 for Nemotron 3 Ultra. Pick Nemotron 3 Ultra for output tokens 1.9x cheaper ($2.40 vs $4.50 per million) and work measured by LiveCodeBench (Vals AI) or LMArena Text: coding, where it leads.

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

GPT-5.4 Mini costs $0.75 per million input tokens and $4.50 per million output tokens; Nemotron 3 Ultra costs $0.60 and $2.40. Cost per solved task is known for GPT-5.4 Mini only.

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

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

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

60 benchmarks have a result for both models as of October 22, 2026. GPT-5.4 Mini's coding index rests on 5 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-mini-vs-nvidia-nemotron-3-ultra-550b-a55b">LLMBenchmark.ai, GPT-5.4 Mini vs Nemotron 3 Ultra</a></p>