Model comparison
Nemotron 3 Ultra vs o3-mini
Head-to-head evidence from 8 shared benchmark results across 3 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Verified leaderboard positions: Nemotron 3 Ultra #24; o3-mini unranked
BenchAlign evidence: Nemotron 3 Ultra not scored; o3-mini supported. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Nemotron 3 Ultra and o3-mini share 8 comparable benchmark results. 3 of 8 categories are comparable. 31 results are unique to Nemotron 3 Ultra; 3 to o3-mini.
Updated July 16, 2026- Shared results
- 8
- Nemotron 3 Ultra only
- 31
- o3-mini only
- 3
- Comparable categories
- 3 / 8
Pick Nemotron 3 Ultra if you want the stronger benchmark profile. o3-mini only becomes the better choice if knowledge is the priority.
Confidence note. This is a partial-evidence comparison with 8 shared benchmark results across 3 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 is clearly ahead on the provisional aggregate, 60 to 52. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Nemotron 3 Ultra's sharpest advantage is in coding, where it averages 58.3 against 49.3. The single biggest benchmark swing on the page is SWE-bench Verified, 71.9% to 49.3%. o3-mini does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.
o3-mini is also the more expensive model on tokens at $1.10 input / $4.40 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 200K for o3-mini.
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 | o3-mini |
|---|---|---|---|
| Knowledge | Nemotron 3 Ultra54.2 | Margin→ 23.0 | o3-mini77.2 |
| Inst. Following | Nemotron 3 Ultra81.7 | Margin→ 12.2 | o3-mini93.9 |
| Coding | Nemotron 3 Ultra58.3 | Margin← 9.0 | o3-mini49.3 |
| Agentic | Nemotron 3 Ultra51.3 | MarginNo overlap | o3-miniNot measured |
| Reasoning | Nemotron 3 Ultra61.9 | MarginNo overlap | o3-miniNot measured |
| Multilingual | Nemotron 3 Ultra83.0 | MarginNo overlap | o3-miniNot measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
SWE-bench Verified
CodingA 71.9%B 49.3%Winner: Nemotron 3 UltraΔ 22.6SWE-bench Verified: Nemotron 3 Ultra scored 71.9%; o3-mini scored 49.3%. Nemotron 3 Ultra wins this benchmark. - Source ↗
GPQA
KnowledgeA 87%B 77.2%Winner: Nemotron 3 UltraΔ 9.8GPQA: Nemotron 3 Ultra scored 87%; o3-mini scored 77.2%. Nemotron 3 Ultra wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Nemotron 3 Ultra | o3-mini | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Nemotron 3 Ultra$0 input / $0 output | o3-mini$1.1 input / $4.4 output | Nemotron 3 Ultra has the lower combined listed price. |
| Generation speedtokens per second | Nemotron 3 UltraNot available | o3-mini160 tok/s | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Nemotron 3 UltraNot available | o3-mini7.12 s | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Nemotron 3 Ultra1M | o3-mini200K | Nemotron 3 Ultra lists the larger context window. |
Benchmark Deep Dive
Agentic12 benchmarks
| Benchmark | Nemotron 3 Ultra | o3-mini | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 56.4% | — | 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% | 28.7% | Nemotron 3 Ultra leads |
| GDPval-AASource | 1164 | — | Not comparable |
| AA BriefcaseSource | 870 | — | Not comparable |
| AA EnterpriseOps-GymSource | 28.9% | — | Not comparable |
| AA Harvey LABSource | 3.3% | — | Not comparable |
CodingNemotron 3 Ultra wins8 benchmarks
| Benchmark | Nemotron 3 Ultra | o3-mini | Result |
|---|---|---|---|
| SWE-bench VerifiedSource | 71.9% | 49.3% | Nemotron 3 Ultra leads |
| SWE MultilingualSource | 67.7% | — | Not comparable |
| LiveCodeBench v6Source | 89.0% | — | Not comparable |
| SciCodeSource | 44.6% | — | Not comparable |
| Terminal-Bench 2.0Source | 56.4% | — | Not comparable |
| AA Coding IndexSource | 49.3% | — | Not comparable |
| Terminal-Bench HardSource | 36.4% | 6.8% | Nemotron 3 Ultra leads |
| AA-SciCodeSource | 39.9% | 39.9% | Tie |
Reasoning3 benchmarks
Knowledgeo3-mini wins13 benchmarks
| Benchmark | Nemotron 3 Ultra | o3-mini | Result |
|---|---|---|---|
| GPQASource | 87% | 77.2% | Nemotron 3 Ultra leads |
| 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% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 37.8% | 19.0% | Nemotron 3 Ultra leads |
| AA-GPQA DiamondSource | 86.7% | 74.8% | Nemotron 3 Ultra leads |
| AA-HLESource | 26.6% | 8.7% | Nemotron 3 Ultra leads |
| AA-Omniscience IndexSource | -0.8% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 28.5% | — | Not comparable |
| AA Openness IndexSource | 83.3% | — | Not comparable |
| MMLUSource | — | 86.9% | Not comparable |
Math1 benchmarks
| Benchmark | Nemotron 3 Ultra | o3-mini | Result |
|---|---|---|---|
| AIME 2024Source | — | 87.3% | Not comparable |
Multilingual1 benchmarks
| Benchmark | Nemotron 3 Ultra | o3-mini | Result |
|---|---|---|---|
| MMLU-ProXSource | 83% | — | Not comparable |
Multimodal1 benchmarks
| Benchmark | Nemotron 3 Ultra | o3-mini | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1132 | — | Not comparable |
Frequently Asked Questions (4)
Which is better, Nemotron 3 Ultra or o3-mini?
Nemotron 3 Ultra is ahead on BenchLM's provisional leaderboard, 60 to 52. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 71.9% and 49.3%.
Which is better for knowledge tasks, Nemotron 3 Ultra or o3-mini?
o3-mini has the edge for knowledge tasks in this comparison, averaging 77.2 versus 54.2. Inside this category, Artificial Analysis Intelligence Index is the benchmark that creates the most daylight between them.
Which is better for coding, Nemotron 3 Ultra or o3-mini?
Nemotron 3 Ultra has the edge for coding in this comparison, averaging 58.3 versus 49.3. Inside this category, Terminal-Bench Hard is the benchmark that creates the most daylight between them.
Which is better for instruction following, Nemotron 3 Ultra or o3-mini?
o3-mini has the edge for instruction following in this comparison, averaging 93.9 versus 81.7. Nemotron 3 Ultra stays close enough that the answer can still flip depending on your workload.
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