Nemotron 3 Nano Omni 30B A3B Reasoning vs Nemotron 3 Ultra 550B A55B
Nemotron 3 Nano Omni 30B A3B Reasoning comes out ahead, 69 to 50 on our weighted score, and it is the cheaper option too.
- Our pick
NVIDIANemotron 3 Nano Omni 30B A3B Reasoning
69/100- ECI—
- Price$0.25 / $0.85
- Context256K
- NVIDIA
Nemotron 3 Ultra 550B A55B
50/100- ECI146.2
- Price$0.50 / $2.50
- Context1M
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Make it a three-way comparison.
Nemotron 3 Nano Omni 30B A3B Reasoning is our pick
Nemotron 3 Nano Omni 30B A3B Reasoning is the better all-round choice, scoring 69/100 against Nemotron 3 Ultra 550B A55B (50). It leads on price and inputs & features. Nemotron 3 Ultra 550B A55B wins on context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceNemotron 3 Nano Omni 30B A3B ReasoningNemotron 3 Nano Omni 30B A3B Reasoning $0.40 · Nemotron 3 Ultra 550B A55B $1.00 per 1M tokens (3:1 blend)
- Longest contextNemotron 3 Ultra 550B A55BNemotron 3 Ultra 550B A55B 1,000,000 · Nemotron 3 Nano Omni 30B A3B Reasoning 256,000 tokens
- Widest inputsNemotron 3 Nano Omni 30B A3B ReasoningNemotron 3 Nano Omni 30B A3B Reasoning: Text, Images, Audio, Video · Nemotron 3 Ultra 550B A55B: Text
- Self-hostingAll open weightsEvery model here can be downloaded and run on your own hardware
| Measure | Weight | Nemotron 3 Nano Omni 30B A3B Reasoning | Nemotron 3 Ultra 550B A55B |
|---|---|---|---|
| Price | 50% | 69 | 50 |
| Inputs & features | 30% | 90 | 45 |
| Context window | 20% | 36 | 60 |
| Overall | 100% | 69/100 | 50/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Nemotron 3 Nano Omni 30B A3B ReasoningNVIDIA | Nemotron 3 Ultra 550B A55BNVIDIA |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | 146.2 |
| ECI rank | — | #70 of 148 |
| GPQA DiamondGraduate-level science questions | — | 85.4% |
| OTIS Mock AIME 2024–2025Competition mathematics | — | 86.7% |
| Price per million tokens | ||
| Input | $0.25 (best) | $0.50 |
| Output | $0.85 (best) | $2.50 |
| Cached input | — | $0.15 |
| Blended (3:1) | $0.40 (best) | $1.00 |
| Long-context rate | Same rate | Same rate |
| Price source | Median of 4 providers | Official Nvidia API |
| Limits | ||
| Context window | 256,000 tokens | 1,000,000 tokens (best) |
| Max output | 65,536 tokens | 128,000 tokens (best) |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | Yes | No |
| PDFs | No | No |
| Audio | Yes | No |
| Video | Yes | No |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Structured output | Yes | Yes |
| Availability | ||
| Weights | Open | Open |
| API model ID | nvidia/nemotron-3-nano-omni-30b-a3b-reasoning | nvidia/nemotron-3-ultra-550b-a55b |
| API providers | 8 | 21 (best) |
| Released | Apr 28, 2026 | Jun 4, 2026 |
| Knowledge cutoff | — | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Nemotron 3 Nano Omni 30B A3B Reasoning$4.20
- Nemotron 3 Ultra 550B A55B$10.00
Which should you choose?
Which is better: Nemotron 3 Nano Omni 30B A3B Reasoning or Nemotron 3 Ultra 550B A55B?
Nemotron 3 Nano Omni 30B A3B Reasoning is the better all-round choice, scoring 69/100 against Nemotron 3 Ultra 550B A55B (50). It leads on price and inputs & features. Nemotron 3 Ultra 550B A55B wins on context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Nemotron 3 Nano Omni 30B A3B Reasoning or Nemotron 3 Ultra 550B A55B?
Nemotron 3 Nano Omni 30B A3B Reasoning is cheaper at $0.25 input / $0.85 output per million tokens (median across 4 API providers; free on Nvidia). Nemotron 3 Ultra 550B A55B costs $0.50 input / $2.50 output per million tokens (official Nvidia API price). At a typical mix of three input tokens to one output token, that is $0.40 per million tokens for Nemotron 3 Nano Omni 30B A3B Reasoning versus $1.00 for Nemotron 3 Ultra 550B A55B (2.5× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Nemotron 3 Nano Omni 30B A3B Reasoning has not been scored yet and Nemotron 3 Ultra 550B A55B has an ECI of 146.2.
Which is better for coding?
There are no published SWE-bench Verified results for Nemotron 3 Nano Omni 30B A3B Reasoning and Nemotron 3 Ultra 550B A55B yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.
Which has the bigger context window?
Nemotron 3 Ultra 550B A55B has the largest context window at 1,000,000 tokens, against 256,000 for Nemotron 3 Nano Omni 30B A3B Reasoning. Maximum output per response: Nemotron 3 Nano Omni 30B A3B Reasoning up to 65,536, Nemotron 3 Ultra 550B A55B up to 128,000 tokens.
Which can read images, PDFs, audio or video?
Nemotron 3 Nano Omni 30B A3B Reasoning accepts text, images, audio and video; Nemotron 3 Ultra 550B A55B accepts text. Nemotron 3 Nano Omni 30B A3B Reasoning handles the widest range of inputs.
Are any of these open source?
Yes, both publish their weights, so you can self-host them.
Which is newer?
Nemotron 3 Ultra 550B A55B is the newest, released Jun 4, 2026. Nemotron 3 Nano Omni 30B A3B Reasoning came out Apr 28, 2026.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.
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