# Nemotron 3 Ultra vs o4-mini

> Side-by-side benchmark comparison for Nemotron 3 Ultra and o4-mini across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/nemotron-3-ultra-vs-o4-mini
- Last updated: October 15, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Nemotron 3 Ultra and o4-mini share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Nemotron 3 Ultra has the lower published output-token price.
- Nemotron 3 Ultra has the larger published context window at 1M.

## Model Snapshot

| Property | Nemotron 3 Ultra | o4-mini |
|----------|----------|----------|
| Creator | NVIDIA | OpenAI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 200K |
| Independent public score (not head-to-head) | 47.12 | null |
| Benchmarks Covered | 24 | 7 |
| Pricing (input/output) | $0.00 / $0.00 | $1.10 / $4.40 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Nemotron 3 Ultra public-lane score: 28 (Supported · #95/126)
- o4-mini public-lane score: Coming soon

| Benchmark | Nemotron 3 Ultra | o4-mini | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 56.4% | Coming soon | Coming soon |
| PinchBench | 90.0% | Coming soon | Coming soon |
| BrowseComp | 44.4% | Coming soon | Coming soon |
| τ³-bench results | 70.9% | Coming soon | Coming soon |
| HLE w/ tools | 37.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 50.9% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Nemotron 3 Ultra public-lane score: 21.9 (Supported · #115/149)
- o4-mini public-lane score: Coming soon

| Benchmark | Nemotron 3 Ultra | o4-mini | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 71.9% | Coming soon | Coming soon |
| SWE Multilingual | 67.7% | Coming soon | Coming soon |
| LiveCodeBench v6 | 89.0% | Coming soon | Coming soon |
| SciCode | 44.6% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 56.4% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 86.0% | Coming soon | Coming soon |
| SWE-bench (Vals) | 69.0% | Coming soon | Coming soon |
| HumanEval | Coming soon | 97.3% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Nemotron 3 Ultra public-lane score: 70.8 (#20/29)
- o4-mini public-lane score: 67.8 (Unranked · 3 rankable rows)

| Benchmark | Nemotron 3 Ultra | o4-mini | Winner |
|-----------|-----------|-----------|--------|
| CritPt | 3.1% | Coming soon | Coming soon |
| LongBench v2 | 61.9% | Coming soon | Coming soon |
| DROP | Coming soon | 77.7% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Nemotron 3 Ultra public-lane score: Coming soon
- o4-mini public-lane score: 66.4 (Unranked · 1 rankable row)

### Knowledge

- Winner: Insufficient shared evidence
- Nemotron 3 Ultra public-lane score: 50.3 (Estimated · #78/182)
- o4-mini public-lane score: Coming soon

| Benchmark | Nemotron 3 Ultra | o4-mini | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 87% | 77.6% | Nemotron 3 Ultra |
| GPQA-D | 87.0% | Coming soon | Coming soon |
| HLE | 26.7% | Coming soon | Coming soon |
| HLE w/o tools | 26.7% | Coming soon | Coming soon |
| MMLU-Pro | 86.8% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 86.1% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 85.8% | Coming soon | Coming soon |
| MMLU | Coming soon | 90% | Coming soon |
| SimpleQA | Coming soon | 20.2% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- Nemotron 3 Ultra public-lane score: 89.2 (#7/17)
- o4-mini public-lane score: Coming soon

| Benchmark | Nemotron 3 Ultra | o4-mini | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | 83% | Coming soon | Coming soon |
| MGSM | Coming soon | 93.7% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Nemotron 3 Ultra public-lane score: 92.1 (#20/146)
- o4-mini public-lane score: 83.9 (#51/146)

| Benchmark | Nemotron 3 Ultra | o4-mini | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 81.7% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Nemotron 3 Ultra public-lane score: Coming soon
- o4-mini public-lane score: Coming soon

| Benchmark | Nemotron 3 Ultra | o4-mini | Winner |
|-----------|-----------|-----------|--------|
| MATH-500 | Coming soon | 97.5% | Coming soon |

## FAQ

### Is there enough evidence to pick between Nemotron 3 Ultra and o4-mini?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Nemotron 3 Ultra vs o4-mini (high)](/compare/nemotron-3-ultra-vs-o4-mini-high)
- [o4-mini vs o4-mini (high)](/compare/o4-mini-vs-o4-mini-high)
- [Nemotron 3 Ultra vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-nemotron-3-ultra)
- [o4-mini vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-o4-mini)

## Explore More

- [Nemotron 3 Ultra profile](/models/nemotron-3-ultra)
- [o4-mini profile](/models/o4-mini)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)