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Gemini 4 Carbon vs Nemotron 3 Ultra

Gemini 4 Carbon leads Nemotron 3 Ultra on coding, 86.6 to 30.0 on the Vibe Coding Index, and Nemotron 3 Ultra costs 4.3x less per output token ($2.30 vs $10.00 per million). Updated November 14, 2026; 42 benchmarks have a result for both.

Replace Gemini 4 Carbon Replace Nemotron 3 Ultra
Gemini 4 CarbonGoogle
Coding
86.6
Overall
88.3
Output $/M
$10.00
41
Nemotron 3 UltraNVIDIA
Coding
30.0
Overall
49.9
Output $/M
$2.30
0
vs boards won of 42 shared, 1 tied

Gemini 4 Carbon or Nemotron 3 Ultra: which to pick

Pick Gemini 4 Carbon for coding: it scores 86.6 on the Vibe Coding Index against 30.0 for Nemotron 3 Ultra.

Pick Nemotron 3 Ultra for output tokens 4.3x cheaper ($2.30 vs $10.00 per million).

Model AGemini 4 CarbonGoogle86.6/1004 independent benchmarksNo cost per solved taskModel BNemotron 3 UltraNVIDIA30.0/1003 independent benchmarksNo cost per solved task
Shared results
42
Gemini 4 Carbon only
31
Nemotron 3 Ultra only
38
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
Gemini 4 Carbon 86.6 from 4 benchmarks, Nemotron 3 Ultra 30.0 from 3 benchmarks.
Widest category
Agentic work, 50.9 points apart on average over 2 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Gemini 4 Carbon 89.1% against Nemotron 3 Ultra 7.6%, 81.4 points apart on a 0 to 100 scale.
Output price
Gemini 4 Carbon $10.00 against Nemotron 3 Ultra $2.30 per million output tokens, 4.3x apart.
Context window
Gemini 4 Carbon takes 1.05M 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
CategoryGemini 4 CarbonBarsNemotron 3 UltraTies
Coding50
Intelligence20
Agentic work20
Reasoning80
Math20
Knowledge50
Web design50
General1201 tie
All shared boards4101 tie
CodingLike-for-likeSix of these boards feed the Vibe Coding Index50
Coding benchmarks for Gemini 4 Carbon and Nemotron 3 Ultra
BenchmarkGemini 4 CarbonNemotron 3 UltraLeader
LiveBench coding91.0%Not measuredOnly Gemini 4 Carbon measured
LMArena WebDev1768Not measuredOnly Gemini 4 Carbon measured
AA Coding IndexNot measured49.3Only Nemotron 3 Ultra measured
LiveCodeBench (Vals AI)Not measured86.0%Only Nemotron 3 Ultra measured
SWE-bench Verified (Vals AI)Not measured69.0%Only Nemotron 3 Ultra measured
Terminal-Bench 4 (Vals AI)63.1%Not measuredOnly Gemini 4 Carbon measured
Vibe Code Bench (Vals AI)89.1%7.6%Gemini 4 Carbon
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
SciCodeNot measured40.3%Only Nemotron 3 Ultra measured
Terminal-Bench Hard (Artificial Analysis run)Not measured36.4%Only Nemotron 3 Ultra measured
Terminal-Bench 4.0 (Artificial Analysis run)65.2%0.5%Gemini 4 Carbon
FrontierCode 2.040.6%1.1%Gemini 4 Carbon
FrontierCodeNot measured13.6%Only Nemotron 3 Ultra measured
FrontierSWE61.2%Not measuredOnly Gemini 4 Carbon measured
WeirdMLNot measured43.5%Only Nemotron 3 Ultra measured
ALE-Bench2374.7Not measuredOnly Gemini 4 Carbon measured
LMArena Text: coding15641468Gemini 4 Carbon
LMArena Text: software and IT15521468Gemini 4 Carbon
LMArena WebDev: React1792Not measuredOnly Gemini 4 Carbon measured
LMArena WebDev: HTML1770Not measuredOnly Gemini 4 Carbon measured
GameBench 2Not measured45.6Only Nemotron 3 Ultra measured
CursorBench 4.060.4%Not measuredOnly Gemini 4 Carbon measured
Neither model has a result on the other 28 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Gemini 4 Carbon and Nemotron 3 Ultra
BenchmarkGemini 4 CarbonNemotron 3 UltraLeader
AA Intelligence Index60.011.8Gemini 4 Carbon
Epoch Capabilities Index169.8146.9Gemini 4 Carbon
Agentic workLike-for-likePublic boards, shown as published, kept out of the index20
Agentic work benchmarks for Gemini 4 Carbon and Nemotron 3 Ultra
BenchmarkGemini 4 CarbonNemotron 3 UltraLeader
AA Agentic IndexNot measured20.1Only Nemotron 3 Ultra measured
Design Arena: agents building mobile apps1284Not measuredOnly Gemini 4 Carbon measured
Design Arena: spreadsheets1224Not measuredOnly Gemini 4 Carbon measured
LiveBench research92.5%Not measuredOnly Gemini 4 Carbon measured
LiveBench browser80.0%Not measuredOnly Gemini 4 Carbon measured
LiveBench long agentic72.7%Not measuredOnly Gemini 4 Carbon measured
Finance Agent (Vals AI)Not measured37.7%Only Nemotron 3 Ultra measured
Tax Agent Bench (Vals AI)51.8%Not measuredOnly Gemini 4 Carbon measured
Legal Research Bench (Vals AI)55.8%15.4%Gemini 4 Carbon
Harvey's Legal Agent Benchmark (Vals AI)17.5%Not measuredOnly Gemini 4 Carbon measured
Excel Modeling Benchmark (Vals AI)Not measured31.7%Only Nemotron 3 Ultra measured
τ²-Bench TelecomNot measured83.3%Only Nemotron 3 Ultra measured
APEX-Agents84.2%22.7%Gemini 4 Carbon
Vending-Bench 2$16,484Not measuredOnly Gemini 4 Carbon measured
MCP AtlasNot measured63.1%Only Nemotron 3 Ultra measured
Toolathlon-VerifiedNot measured34.3%Only Nemotron 3 Ultra measured
Neither model has a result on the other 28 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index80
Reasoning benchmarks for Gemini 4 Carbon and Nemotron 3 Ultra
BenchmarkGemini 4 CarbonNemotron 3 UltraLeader
GPQA DiamondNot measured86.1%Only Nemotron 3 Ultra measured
LiveBench reasoning90.6%Not measuredOnly Gemini 4 Carbon measured
GPQA Diamond (Artificial Analysis run)Not measured86.7%Only Nemotron 3 Ultra measured
Humanity's Last Exam (Artificial Analysis run)Not measured28.4%Only Nemotron 3 Ultra measured
HLE-Diamond (Artificial Analysis run)69.1%8.5%Gemini 4 Carbon
CritPt v2, hard subset (Artificial Analysis run)69.0%15.0%Gemini 4 Carbon
GPQA Diamond (Epoch AI run)96.5%85.4%Gemini 4 Carbon
ARC-AGI98.5%Not measuredOnly Gemini 4 Carbon measured
ARC-AGI-294.2%Not measuredOnly Gemini 4 Carbon measured
SimpleBench92.6%41.7%Gemini 4 Carbon
Chess puzzles78.0%Not measuredOnly Gemini 4 Carbon measured
Mystery game puzzles73.0%20.0%Gemini 4 Carbon
EBR-bench87.6%Not measuredOnly Gemini 4 Carbon measured
LMArena Text: hard prompts15511452Gemini 4 Carbon
LMArena Text: expert15821473Gemini 4 Carbon
LMArena Text: hard prompts in English15451452Gemini 4 Carbon
Neither model has a result on the other 10 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index20
Math benchmarks for Gemini 4 Carbon and Nemotron 3 Ultra
BenchmarkGemini 4 CarbonNemotron 3 UltraLeader
OTIS Mock AIME100.0%86.7%Gemini 4 Carbon
FrontierMath, tiers 1 to 390.5%Not measuredOnly Gemini 4 Carbon measured
FrontierMath, tier 495.1%Not measuredOnly Gemini 4 Carbon measured
ProofBenchNot measured2.0%Only Nemotron 3 Ultra measured
LMArena Text: mathNot measured1456Only Nemotron 3 Ultra measured
LMArena Text: mathematical work15381462Gemini 4 Carbon
MathArena85.4%Not measuredOnly Gemini 4 Carbon measured
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index50
Knowledge benchmarks for Gemini 4 Carbon and Nemotron 3 Ultra
BenchmarkGemini 4 CarbonNemotron 3 UltraLeader
MMLU ProNot measured85.8%Only Nemotron 3 Ultra measured
LegalBench (Vals AI)Not measured82.1%Only Nemotron 3 Ultra measured
CorpFin (Vals AI)Not measured65.5%Only Nemotron 3 Ultra measured
TaxEval (Vals AI)Not measured73.1%Only Nemotron 3 Ultra measured
MedCode (Vals AI)Not measured38.6%Only Nemotron 3 Ultra measured
AA-Omniscience53.53.4Gemini 4 Carbon
SimpleQA Verified77.7%Not measuredOnly Gemini 4 Carbon measured
LMArena Text: science15351465Gemini 4 Carbon
LMArena Text: medicine and healthcare15251457Gemini 4 Carbon
LMArena Text: legal and government15421455Gemini 4 Carbon
LMArena Text: business and finance15201435Gemini 4 Carbon
FACTS Benchmark Suite78.4%Not measuredOnly Gemini 4 Carbon measured
PRBench Legal53.3%Not measuredOnly Gemini 4 Carbon measured
Neither model has a result on the other 8 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index50
Web design benchmarks for Gemini 4 Carbon and Nemotron 3 Ultra
BenchmarkGemini 4 CarbonNemotron 3 UltraLeader
Design Arena: websites13191129Gemini 4 Carbon
Design Arena: UI components13571126Gemini 4 Carbon
Design Arena: game dev13261126Gemini 4 Carbon
Design Arena: data vizNot measured1137Only Nemotron 3 Ultra measured
Design Arena: 3D14341108Gemini 4 Carbon
Design Arena: all code categories13481131Gemini 4 Carbon
Design Arena: SVGNot measured1060Only Nemotron 3 Ultra measured
Design Arena: ASCII artNot measured1093Only Nemotron 3 Ultra measured
LiveBench design80.2%Not measuredOnly Gemini 4 Carbon measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index120
General benchmarks for Gemini 4 Carbon and Nemotron 3 Ultra
BenchmarkGemini 4 CarbonNemotron 3 UltraLeader
Vals Index70.5%Not measuredOnly Gemini 4 Carbon measured
LiveBench data analysis86.5%Not measuredOnly Gemini 4 Carbon measured
IFBenchNot measured81.4%Only Nemotron 3 Ultra measured
Long context reasoning (AA-LCR)79.3%79.3%Tie
GDPval-AA17331020Gemini 4 Carbon
DTBenchNot measured90.1%Only Nemotron 3 Ultra measured
LMCANot measured36.9%Only Nemotron 3 Ultra measured
Furniture assembly77.5%Not measuredOnly Gemini 4 Carbon measured
LMArena Text15381445Gemini 4 Carbon
LMArena Text: instruction following15391418Gemini 4 Carbon
LMArena Text: creative writing15331399Gemini 4 Carbon
LMArena Text: English15301454Gemini 4 Carbon
LMArena Text: non-English15341428Gemini 4 Carbon
LMArena Text: Chinese16131498Gemini 4 Carbon
LMArena Text: GermanNot measured1473Only Nemotron 3 Ultra measured
LMArena Text: KoreanNot measured1383Only Nemotron 3 Ultra measured
LMArena Text: FrenchNot measured1472Only Nemotron 3 Ultra measured
LMArena Text: SpanishNot measured1458Only Nemotron 3 Ultra measured
LMArena Text: Russian15601420Gemini 4 Carbon
LMArena Text: PolishNot measured1382Only Nemotron 3 Ultra measured
LMArena Text: multi-turn15691410Gemini 4 Carbon
LMArena Text: longer queries15491437Gemini 4 Carbon
LMArena Text: writing and language15421407Gemini 4 Carbon
LMArena Text: entertainment and media15271399Gemini 4 Carbon
Neither model has a result on the other 25 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Gemini 4 Carbon and Nemotron 3 Ultra
BenchmarkGemini 4 CarbonNemotron 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

Gemini 4 Carbon$0.0070Fits in one request
Nemotron 3 Ultra$0.0017Fits in one request

Nemotron 3 Ultra costs less

Repository review

50K input + 3K output tokens

Gemini 4 Carbon$0.130Fits in one request
Nemotron 3 Ultra$0.034Fits in one request

Nemotron 3 Ultra costs less

Agent loop

200K input + 10K output tokens

Gemini 4 Carbon$0.500Fits in one request
Nemotron 3 Ultra$0.133Fits 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 Gemini 4 Carbon and Nemotron 3 Ultra
SpecificationGoogle Gemini 4 CarbonNVIDIA Nemotron 3 Ultra
MakerGoogleNVIDIA
WeightsNo public weights listedOpen weights
ReleasedNovember 10, 2026June 4, 2026
Context window1.05M262K
Input $/Mtok$2.00$0.55
Output $/Mtok$10.00$2.30
Coding index86.630.0
Independent measurements behind it43
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 4 Carbon better than Nemotron 3 Ultra for coding?

Pick Gemini 4 Carbon for coding: it scores 86.6 on the Vibe Coding Index against 30.0 for Nemotron 3 Ultra. Pick Nemotron 3 Ultra for output tokens 4.3x cheaper ($2.30 vs $10.00 per million).

Which is cheaper, Gemini 4 Carbon or Nemotron 3 Ultra?

Gemini 4 Carbon costs $2.00 per million input tokens and $10.00 per million output tokens; Nemotron 3 Ultra costs $0.55 and $2.30. Cost per solved task is known for neither of them.

Which has the bigger context window, Gemini 4 Carbon or Nemotron 3 Ultra?

Gemini 4 Carbon, with 1.05M tokens against 262K.

How many benchmarks is the Gemini 4 Carbon vs Nemotron 3 Ultra comparison based on?

42 benchmarks have a result for both models as of November 14, 2026. Gemini 4 Carbon's coding index rests on 4 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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<iframe src="https://llmbenchmark.ai/embed/compare/gemini-4-carbon-vs-nvidia-nemotron-3-ultra-550b-a55b" title="Gemini 4 Carbon vs Nemotron 3 Ultra, LLMBenchmark.ai" width="100%" height="360" style="border:0;max-width:100%" loading="lazy"></iframe>
<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/gemini-4-carbon-vs-nvidia-nemotron-3-ultra-550b-a55b">LLMBenchmark.ai, Gemini 4 Carbon vs Nemotron 3 Ultra</a></p>