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DeepSeek V3.1 Terminus vs Nemotron 3 Ultra

Nemotron 3 Ultra leads DeepSeek V3.1 Terminus on the Artificial Analysis Intelligence Index, 22.9 to 14.8, and DeepSeek V3.1 Terminus costs 2.4x less per output token ($1.0142 vs $2.40 per million). Updated October 22, 2026; 39 benchmarks have a result for both.

Replace DeepSeek V3.1 Terminus Replace Nemotron 3 Ultra
DeepSeek V3.1 TerminusDeepSeek
Coding
No data
Overall
No data
Output $/M
$1.0142
11
Nemotron 3 UltraNVIDIA
Coding
30.0
Overall
53.1
Output $/M
$2.40
28
vs boards won of 39 shared

DeepSeek V3.1 Terminus or Nemotron 3 Ultra: which to pick

Only Nemotron 3 Ultra has a coding score, 30.0 on the Vibe Coding Index; DeepSeek V3.1 Terminus has none, so the two cannot be ranked on coding.

Pick DeepSeek V3.1 Terminus for output tokens 2.4x cheaper ($1.0142 vs $2.40 per million) and work measured by LMArena Text: medicine and healthcare or LMArena Text: legal and government, where it leads.

Model ADeepSeek V3.1 TerminusDeepSeekNot benchmarkedNo coding benchmarkNo cost per solved taskModel BNemotron 3 UltraNVIDIA30.0/1003 independent benchmarksNo cost per solved task
Shared results
39
DeepSeek V3.1 Terminus only
6
Nemotron 3 Ultra only
32
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
DeepSeek V3.1 Terminus not benchmarked, Nemotron 3 Ultra 30.0 from 3 benchmarks.
Widest category
Agentic work, 29.7 points apart on average over 2 shared benchmarks.
Widest single gap
τ²-Bench Telecom: DeepSeek V3.1 Terminus 37.1% against Nemotron 3 Ultra 83.3%, 46.2 points apart on a 0 to 100 scale.
Output price
DeepSeek V3.1 Terminus $1.0142 against Nemotron 3 Ultra $2.40 per million output tokens, 2.4x apart.
Context window
DeepSeek V3.1 Terminus takes 164K 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
CategoryDeepSeek V3.1 TerminusBarsNemotron 3 UltraTies
Coding05
Intelligence01
Agentic work02
Reasoning04
Math01
Knowledge22
Web design52
General411
All shared boards1128
CodingLike-for-likeSix of these boards feed the Vibe Coding Index05
Coding benchmarks for DeepSeek V3.1 Terminus and Nemotron 3 Ultra
BenchmarkDeepSeek V3.1 TerminusNemotron 3 UltraLeader
AA Coding Index43.549.3Nemotron 3 Ultra
LiveCodeBench (Vals AI)Not measured86.0%Only Nemotron 3 Ultra measured
SWE-bench Verified (Vals AI)Not measured69.0%Only Nemotron 3 Ultra measured
Vibe Code Bench (Vals AI)Not measured7.6%Only Nemotron 3 Ultra measured
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
LiveCodeBench (Artificial Analysis run)79.8%Not measuredOnly DeepSeek V3.1 Terminus measured
SciCode38.0%40.3%Nemotron 3 Ultra
Terminal-Bench Hard (Artificial Analysis run)31.8%36.4%Nemotron 3 Ultra
FrontierCodeNot measured13.6%Only Nemotron 3 Ultra measured
WeirdMLNot measured43.5%Only Nemotron 3 Ultra measured
ALE-Bench745.2Not measuredOnly DeepSeek V3.1 Terminus measured
LMArena Text: coding14251468Nemotron 3 Ultra
LMArena Text: software and IT14261468Nemotron 3 Ultra
Neither model has a result on the other 28 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for DeepSeek V3.1 Terminus and Nemotron 3 Ultra
BenchmarkDeepSeek V3.1 TerminusNemotron 3 UltraLeader
AA Intelligence Index14.822.9Nemotron 3 Ultra
Epoch Capabilities IndexNot measured146.0Only Nemotron 3 Ultra measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index02
Agentic work benchmarks for DeepSeek V3.1 Terminus and Nemotron 3 Ultra
BenchmarkDeepSeek V3.1 TerminusNemotron 3 UltraLeader
AA Agentic Index6.820.1Nemotron 3 Ultra
Finance Agent (Vals AI)Not measured37.7%Only Nemotron 3 Ultra measured
Legal Research Bench (Vals AI)Not measured15.4%Only Nemotron 3 Ultra measured
Excel Modeling Benchmark (Vals AI)Not measured31.7%Only Nemotron 3 Ultra measured
τ²-Bench Telecom37.1%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 35 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index04
Reasoning benchmarks for DeepSeek V3.1 Terminus and Nemotron 3 Ultra
BenchmarkDeepSeek V3.1 TerminusNemotron 3 UltraLeader
GPQA DiamondNot measured86.1%Only Nemotron 3 Ultra measured
GPQA Diamond (Artificial Analysis run)79.2%86.7%Nemotron 3 Ultra
Humanity's Last Exam (Artificial Analysis run)16.4%28.4%Nemotron 3 Ultra
GPQA Diamond (Epoch AI run)Not measured85.4%Only Nemotron 3 Ultra measured
Mystery game puzzlesNot measured20.0%Only Nemotron 3 Ultra measured
LMArena Text: hard prompts14261452Nemotron 3 Ultra
LMArena Text: expertNot measured1472Only Nemotron 3 Ultra measured
LMArena Text: hard prompts in English14321453Nemotron 3 Ultra
Kagi LLM Benchmark57.4%Not measuredOnly DeepSeek V3.1 Terminus measured
Neither model has a result on the other 14 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index01
Math benchmarks for DeepSeek V3.1 Terminus and Nemotron 3 Ultra
BenchmarkDeepSeek V3.1 TerminusNemotron 3 UltraLeader
AA Math Index89.7Not measuredOnly DeepSeek V3.1 Terminus measured
AIME 2025 (Artificial Analysis run)89.7%Not measuredOnly DeepSeek V3.1 Terminus measured
OTIS Mock AIMENot measured86.7%Only Nemotron 3 Ultra measured
ProofBenchNot measured2.0%Only Nemotron 3 Ultra measured
LMArena Text: math14021457Nemotron 3 Ultra
LMArena Text: mathematical workNot measured1461Only Nemotron 3 Ultra measured
Neither model has a result on the other 8 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index22
Knowledge benchmarks for DeepSeek V3.1 Terminus and Nemotron 3 Ultra
BenchmarkDeepSeek V3.1 TerminusNemotron 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
MMLU Pro (Artificial Analysis run)85.1%Not measuredOnly DeepSeek V3.1 Terminus measured
LMArena Text: science14511465Nemotron 3 Ultra
LMArena Text: medicine and healthcare14681456DeepSeek V3.1 Terminus
LMArena Text: legal and government14571452DeepSeek V3.1 Terminus
LMArena Text: business and finance14141434Nemotron 3 Ultra
Neither model has a result on the other 10 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index52
Web design benchmarks for DeepSeek V3.1 Terminus and Nemotron 3 Ultra
BenchmarkDeepSeek V3.1 TerminusNemotron 3 UltraLeader
Design Arena: websites11871145DeepSeek V3.1 Terminus
Design Arena: UI components11801135DeepSeek V3.1 Terminus
Design Arena: game dev11311138Nemotron 3 Ultra
Design Arena: data viz11681141DeepSeek V3.1 Terminus
Design Arena: 3D11411131DeepSeek V3.1 Terminus
Design Arena: all code categories11751146DeepSeek V3.1 Terminus
Design Arena: SVG10651069Nemotron 3 Ultra
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 index411
General benchmarks for DeepSeek V3.1 Terminus and Nemotron 3 Ultra
BenchmarkDeepSeek V3.1 TerminusNemotron 3 UltraLeader
IFBench57.0%81.4%Nemotron 3 Ultra
Long context reasoning (AA-LCR)69.3%79.3%Nemotron 3 Ultra
DTBench81.3%90.1%Nemotron 3 Ultra
LMCA28.6%36.9%Nemotron 3 Ultra
LMArena Text14191445Nemotron 3 Ultra
LMArena Text: instruction following14041418Nemotron 3 Ultra
LMArena Text: creative writing14031399DeepSeek V3.1 Terminus
LMArena Text: English14291455Nemotron 3 Ultra
LMArena Text: non-English14081427Nemotron 3 Ultra
LMArena Text: ChineseNot measured1497Only Nemotron 3 Ultra measured
LMArena Text: GermanNot measured1472Only Nemotron 3 Ultra measured
LMArena Text: KoreanNot measured1384Only Nemotron 3 Ultra measured
LMArena Text: FrenchNot measured1472Only Nemotron 3 Ultra measured
LMArena Text: SpanishNot measured1455Only Nemotron 3 Ultra measured
LMArena Text: Russian14351417DeepSeek V3.1 Terminus
LMArena Text: Polish14271385DeepSeek V3.1 Terminus
LMArena Text: multi-turn14111411Nemotron 3 Ultra
LMArena Text: longer queries14221437Nemotron 3 Ultra
LMArena Text: writing and language14091406DeepSeek V3.1 Terminus
LMArena Text: entertainment and media13911397Nemotron 3 Ultra
Neither model has a result on the other 28 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for DeepSeek V3.1 Terminus and Nemotron 3 Ultra
BenchmarkDeepSeek V3.1 TerminusNemotron 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

DeepSeek V3.1 Terminus$0.0008Fits in one request
Nemotron 3 Ultra$0.0018Fits in one request

DeepSeek V3.1 Terminus costs less

Repository review

50K input + 3K output tokens

DeepSeek V3.1 Terminus$0.018Fits in one request
Nemotron 3 Ultra$0.037Fits in one request

DeepSeek V3.1 Terminus costs less

Agent loop

200K input + 10K output tokens

DeepSeek V3.1 Terminus$0.071Exceeds the context window
Nemotron 3 Ultra$0.144Fits in one request

DeepSeek V3.1 Terminus 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 DeepSeek V3.1 Terminus and Nemotron 3 Ultra
SpecificationDeepSeek V3.1 TerminusNVIDIA Nemotron 3 Ultra
MakerDeepSeekNVIDIA
WeightsOpen weightsOpen weights
ReleasedSeptember 22, 2025June 4, 2026
Context window164K262K
Input $/Mtok$0.3063$0.60
Output $/Mtok$1.0142$2.40
Coding indexNot benchmarked30.0
Independent measurements behind it03
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is DeepSeek V3.1 Terminus better than Nemotron 3 Ultra for coding?

Only Nemotron 3 Ultra has a coding score, 30.0 on the Vibe Coding Index; DeepSeek V3.1 Terminus has none, so the two cannot be ranked on coding. Pick DeepSeek V3.1 Terminus for output tokens 2.4x cheaper ($1.0142 vs $2.40 per million) and work measured by LMArena Text: medicine and healthcare or LMArena Text: legal and government, where it leads.

Which is cheaper, DeepSeek V3.1 Terminus or Nemotron 3 Ultra?

DeepSeek V3.1 Terminus costs $0.3063 per million input tokens and $1.0142 per million output tokens; Nemotron 3 Ultra costs $0.60 and $2.40. Cost per solved task is known for neither of them.

Which has the bigger context window, DeepSeek V3.1 Terminus or Nemotron 3 Ultra?

Nemotron 3 Ultra, with 262K tokens against 164K.

How many benchmarks is the DeepSeek V3.1 Terminus vs Nemotron 3 Ultra comparison based on?

39 benchmarks have a result for both models as of October 22, 2026. DeepSeek V3.1 Terminus's coding index rests on 0 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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