Model comparison
Nemotron 3 Ultra vs Step 3.7 Flash
Head-to-head evidence from 21 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Verified leaderboard positions: Nemotron 3 Ultra #24; Step 3.7 Flash unranked
BenchAlign evidence: Nemotron 3 Ultra not scored; Step 3.7 Flash estimated. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Nemotron 3 Ultra and Step 3.7 Flash share 21 comparable benchmark results. 2 of 8 categories are comparable. 18 results are unique to Nemotron 3 Ultra; 9 to Step 3.7 Flash.
Updated July 16, 2026- Shared results
- 21
- Nemotron 3 Ultra only
- 18
- Step 3.7 Flash only
- 9
- Comparable categories
- 2 / 8
Pick Nemotron 3 Ultra if you want the stronger benchmark profile. Step 3.7 Flash only becomes the better choice if agentic is the priority.
Confidence note. This is a partial-evidence comparison with 21 shared benchmark results across 6 evidence categories; 2 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 coding, where it averages 58.3 against 56.3. The single biggest benchmark swing on the page is BrowseComp, 44.4% to 75.8%. Step 3.7 Flash does hit back in agentic, so the answer changes if that is the part of the workload you care about most.
Step 3.7 Flash is also the more expensive model on tokens at $0.20 input / $1.15 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 gives you the larger context window at 1M, compared with 256K for Step 3.7 Flash.
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 | Nemotron 3 Ultra | Δ | Step 3.7 Flash |
|---|---|---|---|
| Agentic | Nemotron 3 Ultra51.3 | Margin→ 15.1 | Step 3.7 Flash66.4 |
| Coding | Nemotron 3 Ultra58.3 | Margin← 2.0 | Step 3.7 Flash56.3 |
| Reasoning | Nemotron 3 Ultra61.9 | MarginNo overlap | Step 3.7 FlashNot measured |
| Knowledge | Nemotron 3 Ultra54.2 | MarginNo overlap | Step 3.7 FlashNot measured |
| Multilingual | Nemotron 3 Ultra83.0 | MarginNo overlap | Step 3.7 FlashNot measured |
| Inst. Following | Nemotron 3 Ultra81.7 | MarginNo overlap | Step 3.7 FlashNot measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
BrowseComp
AgenticA 44.4%B 75.8%Winner: Step 3.7 FlashΔ 31.4BrowseComp: Nemotron 3 Ultra scored 44.4%; Step 3.7 Flash scored 75.8%. Step 3.7 Flash wins this benchmark. - Source ↗
Terminal-Bench 2.0
AgenticA 56.4%B 59.5%Winner: Step 3.7 FlashΔ 3.1Terminal-Bench 2.0: Nemotron 3 Ultra scored 56.4%; Step 3.7 Flash scored 59.5%. Step 3.7 Flash wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Nemotron 3 Ultra | Step 3.7 Flash | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Nemotron 3 Ultra$0 input / $0 output | Step 3.7 Flash$0.2 input / $1.15 output | Nemotron 3 Ultra has the lower combined listed price. |
| Generation speedtokens per second | Nemotron 3 UltraNot available | Step 3.7 FlashNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Nemotron 3 UltraNot available | Step 3.7 FlashNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Nemotron 3 Ultra1M | Step 3.7 Flash256K | Nemotron 3 Ultra lists the larger context window. |
Benchmark Deep Dive
AgenticStep 3.7 Flash wins17 benchmarks
| Benchmark | Nemotron 3 Ultra | Step 3.7 Flash | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 56.4% | 59.5% | Step 3.7 Flash leads |
| PinchBenchSource | 90.0% | — | Not comparable |
| BrowseCompSource | 44.4% | 75.8% | Step 3.7 Flash leads |
| τ³-bench resultsSource | 70.9% | — | Not comparable |
| GDPval-AASource | 33.2% | 25.9% | Nemotron 3 Ultra leads |
| HLE w/ toolsSource | 37.4% | 47.2% | Step 3.7 Flash leads |
| AA Agentic IndexSource | 27.4% | 21.5% | Nemotron 3 Ultra leads |
| τ²-bench resultsSource | 83.3% | 98.5% | Step 3.7 Flash leads |
| GDPval-AASource | 1164 | 1017 | Nemotron 3 Ultra leads |
| AA BriefcaseSource | 870 | — | Not comparable |
| AA EnterpriseOps-GymSource | 28.9% | — | Not comparable |
| AA Harvey LABSource | 3.3% | — | Not comparable |
| DeepSearchQASource | — | 92.8% | Not comparable |
| ToolathlonSource | — | 49.5% | Not comparable |
| Claw-EvalSource | — | 67.1% | Not comparable |
| Gert LabsSource | — | 51.57% | Not comparable |
| APEX-Agents-AASource | — | 14.8% | Not comparable |
CodingNemotron 3 Ultra wins9 benchmarks
| Benchmark | Nemotron 3 Ultra | Step 3.7 Flash | Result |
|---|---|---|---|
| SWE-bench VerifiedSource | 71.9% | — | Not comparable |
| SWE MultilingualSource | 67.7% | — | Not comparable |
| LiveCodeBench v6Source | 89.0% | — | Not comparable |
| SciCodeSource | 44.6% | — | Not comparable |
| Terminal-Bench 2.0Source | 56.4% | 59.5% | Step 3.7 Flash leads |
| AA Coding IndexSource | 49.3% | 39.6% | Nemotron 3 Ultra leads |
| Terminal-Bench HardSource | 36.4% | 35.6% | Nemotron 3 Ultra leads |
| AA-SciCodeSource | 39.9% | 40.0% | Step 3.7 Flash leads |
| SWE-bench ProSource | — | 56.3% | Not comparable |
Reasoning3 benchmarks
Knowledge12 benchmarks
| Benchmark | Nemotron 3 Ultra | Step 3.7 Flash | Result |
|---|---|---|---|
| GPQASource | 87% | — | Not comparable |
| GPQA-DSource | 87.0% | — | Not comparable |
| HLESource | 26.7% | — | Not comparable |
| HLE w/o toolsSource | 26.7% | — | Not comparable |
| MMLU-ProSource | 86.8% | — | Not comparable |
| AA-Omniscience AccuracySource | 21.6% | 25.4% | Step 3.7 Flash leads |
| Artificial Analysis Intelligence IndexSource | 37.8% | 30.3% | Nemotron 3 Ultra leads |
| AA-GPQA DiamondSource | 86.7% | 80.9% | Nemotron 3 Ultra leads |
| AA-HLESource | 26.6% | 19.9% | Nemotron 3 Ultra leads |
| AA-Omniscience IndexSource | -0.8% | -37.5% | Nemotron 3 Ultra leads |
| AA-Omniscience Hallucination RateSource | 28.5% | 84.4% | Nemotron 3 Ultra leads |
| AA Openness IndexSource | 83.3% | — | Not comparable |
Multilingual1 benchmarks
| Benchmark | Nemotron 3 Ultra | Step 3.7 Flash | Result |
|---|---|---|---|
| MMLU-ProXSource | 83% | — | Not comparable |
Multimodal4 benchmarks
Frequently Asked Questions (3)
Which is better, Nemotron 3 Ultra or Step 3.7 Flash?
Nemotron 3 Ultra is ahead on BenchLM's provisional leaderboard, 60 to 57. The biggest single separator in this matchup is BrowseComp, where the scores are 44.4% and 75.8%.
Which is better for coding, Nemotron 3 Ultra or Step 3.7 Flash?
Nemotron 3 Ultra has the edge for coding in this comparison, averaging 58.3 versus 56.3. Inside this category, AA Coding Index is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, Nemotron 3 Ultra or Step 3.7 Flash?
Step 3.7 Flash has the edge for agentic tasks in this comparison, averaging 66.4 versus 51.3. Inside this category, GDPval-AA is the benchmark that creates the most daylight between them.
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