Model comparison
DeepSeek V4 Flash vs Nemotron 3 Ultra
Head-to-head evidence from 9 shared benchmark results across 4 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Verified leaderboard positions: DeepSeek V4 Flash unranked; Nemotron 3 Ultra #24
BenchAlign evidence: DeepSeek V4 Flash 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 and Nemotron 3 Ultra share 9 comparable benchmark results. 3 of 8 categories are comparable. 14 results are unique to DeepSeek V4 Flash; 30 to Nemotron 3 Ultra.
Updated July 16, 2026- Shared results
- 9
- DeepSeek V4 Flash only
- 14
- Nemotron 3 Ultra only
- 30
- Comparable categories
- 3 / 8
Pick Nemotron 3 Ultra if you want the stronger benchmark profile. DeepSeek V4 Flash only becomes the better choice if coding is the priority or you would rather avoid the extra latency and token burn of a reasoning model.
Confidence note. This is a partial-evidence comparison with 9 shared benchmark results across 4 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
Nemotron 3 Ultra has the cleaner provisional overall profile here, landing at 60 versus 57. It is a real lead, but still close enough that category-level strengths matter more than the headline number.
Nemotron 3 Ultra's sharpest advantage is in knowledge, where it averages 54.2 against 39.2. The single biggest benchmark swing on the page is HLE, 8.1% to 26.7%. DeepSeek V4 Flash does hit back in coding, so the answer changes if that is the part of the workload you care about most.
DeepSeek V4 Flash 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. Nemotron 3 Ultra is the reasoning model in the pair, while DeepSeek V4 Flash is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use.
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 | DeepSeek V4 Flash | Δ | Nemotron 3 Ultra |
|---|---|---|---|
| Knowledge | DeepSeek V4 Flash39.2 | Margin→ 15.0 | Nemotron 3 Ultra54.2 |
| Coding | DeepSeek V4 Flash64.2 | Margin← 5.9 | Nemotron 3 Ultra58.3 |
| Agentic | DeepSeek V4 Flash49.1 | Margin→ 2.2 | Nemotron 3 Ultra51.3 |
| Reasoning | DeepSeek V4 FlashNot measured | MarginNo overlap | Nemotron 3 Ultra61.9 |
| Math | DeepSeek V4 Flash40.8 | MarginNo overlap | Nemotron 3 UltraNot measured |
| Multilingual | DeepSeek V4 FlashNot measured | MarginNo overlap | Nemotron 3 Ultra83.0 |
| Inst. Following | DeepSeek V4 FlashNot measured | MarginNo overlap | Nemotron 3 Ultra81.7 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
HLE
KnowledgeA 8.1%B 26.7%Winner: Nemotron 3 UltraΔ 18.6HLE: DeepSeek V4 Flash scored 8.1%; Nemotron 3 Ultra scored 26.7%. Nemotron 3 Ultra wins this benchmark. - Source ↗
GPQA
KnowledgeA 71.2%B 87%Winner: Nemotron 3 UltraΔ 15.8GPQA: DeepSeek V4 Flash scored 71.2%; Nemotron 3 Ultra scored 87%. Nemotron 3 Ultra wins this benchmark. - Source ↗
Terminal-Bench 2.0
AgenticA 49.1%B 56.4%Winner: Nemotron 3 UltraΔ 7.3Terminal-Bench 2.0: DeepSeek V4 Flash scored 49.1%; Nemotron 3 Ultra scored 56.4%. Nemotron 3 Ultra wins this benchmark. - Source ↗
MMLU-Pro
KnowledgeA 83%B 86.8%Winner: Nemotron 3 UltraΔ 3.8MMLU-Pro: DeepSeek V4 Flash scored 83%; Nemotron 3 Ultra scored 86.8%. Nemotron 3 Ultra wins this benchmark. - Source ↗
SWE-bench Verified
CodingA 73.7%B 71.9%Winner: DeepSeek V4 FlashΔ 1.8SWE-bench Verified: DeepSeek V4 Flash scored 73.7%; Nemotron 3 Ultra scored 71.9%. DeepSeek V4 Flash wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | DeepSeek V4 Flash | Nemotron 3 Ultra | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | DeepSeek V4 Flash$0.14 input / $0.28 output | Nemotron 3 Ultra$0 input / $0 output | Nemotron 3 Ultra has the lower combined listed price. |
| Generation speedtokens per second | DeepSeek V4 FlashNot available | Nemotron 3 UltraNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | DeepSeek V4 FlashNot available | Nemotron 3 UltraNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | DeepSeek V4 Flash1M | Nemotron 3 Ultra1M | Listed context windows are equal. |
Benchmark Deep Dive
AgenticNemotron 3 Ultra wins16 benchmarks
| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 49.1% | 56.4% | Nemotron 3 Ultra leads |
| MCP AtlasSource | 64% | — | Not comparable |
| ToolathlonSource | 40.7% | — | Not comparable |
| Claw-EvalSource | 57.8% | — | Not comparable |
| Gert LabsSource | 54.35% | — | Not comparable |
| PinchBenchSource | — | 90.0% | Not comparable |
| BrowseCompSource | — | 44.4% | Not comparable |
| τ³-bench resultsSource | — | 70.9% | Not comparable |
| GDPval-AASource | — | 33.2% | Not comparable |
| HLE w/ toolsSource | — | 37.4% | Not comparable |
| AA Agentic IndexSource | — | 27.4% | Not comparable |
| τ²-bench resultsSource | — | 83.3% | Not comparable |
| GDPval-AASource | — | 1164 | Not comparable |
| AA BriefcaseSource | — | 870 | Not comparable |
| AA EnterpriseOps-GymSource | — | 28.9% | Not comparable |
| AA Harvey LABSource | — | 3.3% | Not comparable |
CodingDeepSeek V4 Flash wins10 benchmarks
| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra | Result |
|---|---|---|---|
| LiveCodeBench Pass@1-COTSource | 55.2% | — | Not comparable |
| SWE-bench VerifiedSource | 73.7% | 71.9% | DeepSeek V4 Flash leads |
| SWE-bench ProSource | 49.1% | — | Not comparable |
| SWE MultilingualSource | 69.7% | 67.7% | DeepSeek V4 Flash leads |
| Terminal-Bench 2.0Source | 49.1% | 56.4% | Nemotron 3 Ultra leads |
| LiveCodeBench v6Source | — | 89.0% | Not comparable |
| SciCodeSource | — | 44.6% | Not comparable |
| AA Coding IndexSource | — | 49.3% | Not comparable |
| Terminal-Bench HardSource | — | 36.4% | Not comparable |
| AA-SciCodeSource | — | 39.9% | Not comparable |
Reasoning5 benchmarks
KnowledgeNemotron 3 Ultra wins14 benchmarks
| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra | Result |
|---|---|---|---|
| MMLU-ProSource | 83% | 86.8% | Nemotron 3 Ultra leads |
| SimpleQASource | 23.1% | — | Not comparable |
| Chinese-SimpleQASource | 71.5% | — | Not comparable |
| GPQASource | 71.2% | 87% | Nemotron 3 Ultra leads |
| GPQA-DSource | 71.2% | 87.0% | Nemotron 3 Ultra leads |
| HLESource | 8.1% | 26.7% | Nemotron 3 Ultra leads |
| HLE w/o toolsSource | — | 26.7% | Not comparable |
| AA-Omniscience AccuracySource | — | 21.6% | Not comparable |
| Artificial Analysis Intelligence IndexSource | — | 37.8% | Not comparable |
| AA-GPQA DiamondSource | — | 86.7% | Not comparable |
| AA-HLESource | — | 26.6% | Not comparable |
| AA-Omniscience IndexSource | — | -0.8% | Not comparable |
| AA-Omniscience Hallucination RateSource | — | 28.5% | Not comparable |
| AA Openness IndexSource | — | 83.3% | Not comparable |
Math4 benchmarks
Multilingual1 benchmarks
| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra | Result |
|---|---|---|---|
| MMLU-ProXSource | — | 83% | Not comparable |
Multimodal1 benchmarks
| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1242 | 1132 | DeepSeek V4 Flash leads |
Frequently Asked Questions (4)
Which is better, DeepSeek V4 Flash or Nemotron 3 Ultra?
Nemotron 3 Ultra is ahead on BenchLM's provisional leaderboard, 60 to 57. The biggest single separator in this matchup is HLE, where the scores are 8.1% and 26.7%.
Which is better for knowledge tasks, DeepSeek V4 Flash or Nemotron 3 Ultra?
Nemotron 3 Ultra has the edge for knowledge tasks in this comparison, averaging 54.2 versus 39.2. Inside this category, HLE is the benchmark that creates the most daylight between them.
Which is better for coding, DeepSeek V4 Flash or Nemotron 3 Ultra?
DeepSeek V4 Flash has the edge for coding in this comparison, averaging 64.2 versus 58.3. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, DeepSeek V4 Flash or Nemotron 3 Ultra?
Nemotron 3 Ultra has the edge for agentic tasks in this comparison, averaging 51.3 versus 49.1. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
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