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Model comparison

DeepSeek V4 Flash (High) vs Nemotron 3 Ultra

Data verified

Head-to-head evidence from 23 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

53.87/100
Margin
6.1pts
winning →
60/100
2 category wins1 category wins

Verified leaderboard positions: DeepSeek V4 Flash (High) #29; Nemotron 3 Ultra #24

BenchAlign evidence: DeepSeek V4 Flash (High) estimated; Nemotron 3 Ultra not scored. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. DeepSeek V4 Flash (High) and Nemotron 3 Ultra share 23 comparable benchmark results. 3 of 8 categories are comparable. 13 results are unique to DeepSeek V4 Flash (High); 16 to Nemotron 3 Ultra.

Updated July 16, 2026
Shared results
23
DeepSeek V4 Flash (High) only
13
Nemotron 3 Ultra only
16
Comparable categories
3 / 8

Pick DeepSeek V4 Flash (High) if you want the stronger benchmark profile. Nemotron 3 Ultra only becomes the better choice if knowledge is the priority or you want the cheaper token bill.

Confidence note. This is a partial-evidence comparison with 23 shared benchmark results across 6 evidence categories; 3 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

DeepSeek V4 Flash (High) has the cleaner provisional overall profile here, landing at 62 versus 60. It is a real lead, but still close enough that category-level strengths matter more than the headline number.

DeepSeek V4 Flash (High)'s sharpest advantage is in coding, where it averages 68.5 against 58.3. The single biggest benchmark swing on the page is BrowseComp, 53.5% to 44.4%. Nemotron 3 Ultra does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.

DeepSeek V4 Flash (High) is also the more expensive model on tokens at $0.14 input / $0.28 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Nemotron 3 Ultra. That is roughly Infinityx on output cost alone.

Category breakdown

Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.

Category scores and score margins for DeepSeek V4 Flash (High) and Nemotron 3 Ultra
CategoryDeepSeek V4 Flash (High)ΔNemotron 3 Ultra
CodingDeepSeek V4 Flash (High)68.5Margin← 10.2Nemotron 3 Ultra58.3
AgenticDeepSeek V4 Flash (High)55.3Margin← 4.0Nemotron 3 Ultra51.3
KnowledgeDeepSeek V4 Flash (High)52.4Margin→ 1.8Nemotron 3 Ultra54.2
ReasoningDeepSeek V4 Flash (High)Not measuredMarginNo overlapNemotron 3 Ultra61.9
MathDeepSeek V4 Flash (High)91.9MarginNo overlapNemotron 3 UltraNot measured
MultilingualDeepSeek V4 Flash (High)Not measuredMarginNo overlapNemotron 3 Ultra83.0
Inst. FollowingDeepSeek V4 Flash (High)Not measuredMarginNo overlapNemotron 3 Ultra81.7

Decisive benchmark drivers

The largest measured benchmark gaps in this matchup, with exact reported values.

More
A · DeepSeek V4 Flash (High)B · Nemotron 3 Ultra

  1. BrowseComp

    Agentic
    Source ↗
    A 53.5%B 44.4%
    Winner: DeepSeek V4 Flash (High)Δ 9.1
    BrowseComp: DeepSeek V4 Flash (High) scored 53.5%; Nemotron 3 Ultra scored 44.4%. DeepSeek V4 Flash (High) wins this benchmark.

  2. SWE-bench Verified

    Coding
    Source ↗
    A 78.6%B 71.9%
    Winner: DeepSeek V4 Flash (High)Δ 6.7
    SWE-bench Verified: DeepSeek V4 Flash (High) scored 78.6%; Nemotron 3 Ultra scored 71.9%. DeepSeek V4 Flash (High) wins this benchmark.

  3. HLE

    Knowledge
    Source ↗
    A 29.4%B 26.7%
    Winner: DeepSeek V4 Flash (High)Δ 2.7
    HLE: DeepSeek V4 Flash (High) scored 29.4%; Nemotron 3 Ultra scored 26.7%. DeepSeek V4 Flash (High) wins this benchmark.

  4. GPQA

    Knowledge
    Source ↗
    A 87.4%B 87%
    Winner: DeepSeek V4 Flash (High)Δ 0.4
    GPQA: DeepSeek V4 Flash (High) scored 87.4%; Nemotron 3 Ultra scored 87%. DeepSeek V4 Flash (High) wins this benchmark.

  5. MMLU-Pro

    Knowledge
    Source ↗
    A 86.4%B 86.8%
    Winner: Nemotron 3 UltraΔ 0.4
    MMLU-Pro: DeepSeek V4 Flash (High) scored 86.4%; Nemotron 3 Ultra scored 86.8%. Nemotron 3 Ultra wins this benchmark.

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricDeepSeek V4 Flash (High)Nemotron 3 UltraComparison
Input / output priceUSD per 1M tokensDeepSeek V4 Flash (High)$0.14 input / $0.28 outputNemotron 3 Ultra$0 input / $0 outputNemotron 3 Ultra has the lower combined listed price.
Generation speedtokens per secondDeepSeek V4 Flash (High)Not availableNemotron 3 UltraNot availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenDeepSeek V4 Flash (High)Not availableNemotron 3 UltraNot availableA complete latency comparison is not available.
Context windowmaximum listed tokensDeepSeek V4 Flash (High)1MNemotron 3 Ultra1MListed context windows are equal.

Benchmark Deep Dive

AgenticDeepSeek V4 Flash (High) wins
BenchmarkDeepSeek V4 Flash (High)Nemotron 3 UltraResult
Terminal-Bench 2.0Source 56.6%56.4%DeepSeek V4 Flash (High) leads
BrowseCompSource 53.5%44.4%DeepSeek V4 Flash (High) leads
HLE w/ toolsSource 40.3%37.4%DeepSeek V4 Flash (High) leads
MCP AtlasSource 67.4%—Not comparable
ToolathlonSource 43.5%—Not comparable
τ²-bench resultsSource 95.6%83.3%DeepSeek V4 Flash (High) leads
PinchBenchSource —90.0%Not comparable
τ³-bench resultsSource —70.9%Not comparable
GDPval-AASource —33.2%Not comparable
AA Agentic IndexSource —27.4%Not comparable
GDPval-AASource —1164Not comparable
AA BriefcaseSource —870Not comparable
AA EnterpriseOps-GymSource —28.9%Not comparable
AA Harvey LABSource —3.3%Not comparable
CodingDeepSeek V4 Flash (High) wins
BenchmarkDeepSeek V4 Flash (High)Nemotron 3 UltraResult
LiveCodeBench Pass@1-COTSource 88.4%—Not comparable
CodeforcesSource 2816.0—Not comparable
SWE-bench VerifiedSource 78.6%71.9%DeepSeek V4 Flash (High) leads
SWE-bench ProSource 52.3%—Not comparable
SWE MultilingualSource 70.2%67.7%DeepSeek V4 Flash (High) leads
Terminal-Bench 2.0Source 56.6%56.4%DeepSeek V4 Flash (High) leads
Terminal-Bench HardSource 38.6%36.4%DeepSeek V4 Flash (High) leads
AA-SciCodeSource 42.0%39.9%DeepSeek V4 Flash (High) leads
LiveCodeBench v6Source —89.0%Not comparable
SciCodeSource —44.6%Not comparable
AA Coding IndexSource —49.3%Not comparable
Reasoning
BenchmarkDeepSeek V4 Flash (High)Nemotron 3 UltraResult
MRCR 1MSource 76.9%—Not comparable
CorpusQA 1MSource 59.3%—Not comparable
AA-LCRSource 62.7%67.0%Nemotron 3 Ultra leads
CritPtSource 3.4%3.1%DeepSeek V4 Flash (High) leads
LongBench v2Source —61.9%Not comparable
KnowledgeNemotron 3 Ultra wins
BenchmarkDeepSeek V4 Flash (High)Nemotron 3 UltraResult
MMLU-ProSource 86.4%86.8%Nemotron 3 Ultra leads
SimpleQASource 28.9%—Not comparable
Chinese-SimpleQASource 73.2%—Not comparable
GPQASource 87.4%87%DeepSeek V4 Flash (High) leads
GPQA-DSource 87.4%87.0%DeepSeek V4 Flash (High) leads
HLESource 29.4%26.7%DeepSeek V4 Flash (High) leads
Artificial Analysis Intelligence IndexSource 37.4%37.8%Nemotron 3 Ultra leads
AA-GPQA DiamondSource 86.7%86.7%Tie
AA-HLESource 27.8%26.6%DeepSeek V4 Flash (High) leads
AA-Omniscience IndexSource -22.3%-0.8%Nemotron 3 Ultra leads
AA-Omniscience AccuracySource 35.5%21.6%DeepSeek V4 Flash (High) leads
AA-Omniscience Hallucination RateSource 89.7%28.5%Nemotron 3 Ultra leads
HLE w/o toolsSource —26.7%Not comparable
AA Openness IndexSource —83.3%Not comparable
Math
BenchmarkDeepSeek V4 Flash (High)Nemotron 3 UltraResult
HMMT Feb 2026Source 91.9%—Not comparable
IMOAnswerBenchSource 85.1%—Not comparable
ApexSource 19.1%—Not comparable
Apex ShortlistSource 72.1%—Not comparable
Multilingual
BenchmarkDeepSeek V4 Flash (High)Nemotron 3 UltraResult
MMLU-ProXSource —83%Not comparable
Multimodal
BenchmarkDeepSeek V4 Flash (High)Nemotron 3 UltraResult
Design Arena WebsiteSource 12421132DeepSeek V4 Flash (High) leads
Inst. Following
BenchmarkDeepSeek V4 Flash (High)Nemotron 3 UltraResult
AA-IFBenchSource 73.5%81.4%Nemotron 3 Ultra leads
IFBenchSource —81.7%Not comparable
Frequently Asked Questions (4)

Which is better, DeepSeek V4 Flash (High) or Nemotron 3 Ultra?

DeepSeek V4 Flash (High) is ahead on BenchLM's provisional leaderboard, 62 to 60. The biggest single separator in this matchup is BrowseComp, where the scores are 53.5% and 44.4%.

Which is better for knowledge tasks, DeepSeek V4 Flash (High) or Nemotron 3 Ultra?

Nemotron 3 Ultra has the edge for knowledge tasks in this comparison, averaging 54.2 versus 52.4. Inside this category, AA-Omniscience Hallucination Rate is the benchmark that creates the most daylight between them.

Which is better for coding, DeepSeek V4 Flash (High) or Nemotron 3 Ultra?

DeepSeek V4 Flash (High) has the edge for coding in this comparison, averaging 68.5 versus 58.3. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, DeepSeek V4 Flash (High) or Nemotron 3 Ultra?

DeepSeek V4 Flash (High) has the edge for agentic tasks in this comparison, averaging 55.3 versus 51.3. Inside this category, τ²-bench results is the benchmark that creates the most daylight between them.

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Last updated: July 16, 2026

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