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NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4vsStep 3.7 Flash
Step 3.7 Flash leads 3 of 3 shared benchmarks. NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 has the larger context window (1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 3
Step 3.7 Flash leads
Cheaper per token
—
list price, input + output
Larger context
NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
1M tokens
Provider uptime (30d)
100% · —
NVIDIA · StepFun
NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
NVIDIA · released 2026-06-04
text
- Context
- 1M
- Max out
- —
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 6 · 4 core
Step 3.7 Flash
StepFun · released 2026-05-29
textvision
- Context
- 256K
- Max out
- —
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 19 · 6 core
Quality
Benchmark matrix
3 shared · 3 only NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 · 16 only Step 3.7 Flash| Benchmark | NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 | Step 3.7 Flash | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 3 | ||||
| SWE-bench Verified | 69.7% ↗ | 76.5% ↗ | -6.8 pt | Step 3.7 Flash |
| BrowseComp | 41.4% ↗ | 75.8% ↗ | -34.4 pt | Step 3.7 Flash |
| Terminal-Bench 2.1 | 53.9% ↗ | 59.6% ↗ | -5.7 pt | Step 3.7 Flash |
| Only NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 reports · 3 | ||||
| GPQA Diamond | 87.9% ↗ | not reported | — | — |
| Humanity's Last Exam (no tools) | 26.1% ↗ | not reported | — | — |
| LMArena Elo | 1444.7 ↗ | not reported | — | — |
| Only Step 3.7 Flash reports · 16 | ||||
| AIME 2026 | not reported | 95% ↗matharena ⚠ | — | — |
| AA-LCR | not reported | 63.9% ↗ | — | — |
| ClawEval v1.1 | not reported | 67.1% ↗ | — | — |
| DeepSearchQA Accuracy | not reported | 81.7% ↗ | — | — |
| DeepSearchQA F1 | not reported | 92.8% ↗ | — | — |
| GDPval-Stirrup | not reported | 1415.8 ↗ | — | — |
| GDPval-Stirrup Intelligence Index | not reported | 45.8 ↗ | — | — |
| HLE (with tools, text-only) | not reported | 49.7% ↗ | — | — |
| HLE (with tools) | not reported | 47.2% ↗ | — | — |
| ResearchRubrics | not reported | 71.7% ↗ | — | — |
| SimpleVQA (with tools) | not reported | 79.2% ↗ | — | — |
| SWE-bench Multilingual | not reported | 72.4% ↗ | — | — |
| SWE-bench Pro | not reported | 56.3% ↗ | — | — |
| Toolathlon | not reported | 49.5% ↗ | — | — |
| V* (with Python) | not reported | 95.3% ↗ | — | — |
| WorldVQA (with visual search) | not reported | 58.1% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 minus Step 3.7 Flash in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 | Step 3.7 Flash | Edge |
|---|---|---|---|
| Context window | 1M tokens | 256K tokens | NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 |
| Max output | — | — | — |
| Input price / 1M | — | — | — |
| Output price / 1M | — | — | — |
| Cached input / 1M | — | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | — | — | — |
| Modalities | text | text · vision | Step 3.7 Flash |
| Released | 2026-06-04 | 2026-05-29 | — |
| Cited benchmark scores | 6 | 19 | — |
Reliability
Provider status
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