Model comparison
Nemotron 3 Ultra vs o3-pro
Head-to-head evidence from 2 shared benchmark results across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Verified leaderboard positions: Nemotron 3 Ultra #24; o3-pro unranked
BenchAlign evidence: Nemotron 3 Ultra not scored; o3-pro supported. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Nemotron 3 Ultra and o3-pro share 2 comparable benchmark results. 0 of 8 categories are comparable. 37 results are unique to Nemotron 3 Ultra; 0 to o3-pro.
Updated July 16, 2026- Shared results
- 2
- Nemotron 3 Ultra only
- 37
- o3-pro only
- 0
- Comparable categories
- 0 / 8
Benchmark data for Nemotron 3 Ultra and o3-pro is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 2 shared benchmark results across 1 evidence category; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.
o3-pro is priced at $20.00 input / $80.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Nemotron 3 Ultra. Nemotron 3 Ultra has the larger context window at 1M, compared with 200K for o3-pro.
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-pro |
|---|---|---|---|
| Agentic | Nemotron 3 Ultra51.3 | MarginNo overlap | o3-proNot measured |
| Coding | Nemotron 3 Ultra58.3 | MarginNo overlap | o3-proNot measured |
| Reasoning | Nemotron 3 Ultra61.9 | MarginNo overlap | o3-proNot measured |
| Knowledge | Nemotron 3 Ultra54.2 | MarginNo overlap | o3-proNot measured |
| Multilingual | Nemotron 3 Ultra83.0 | MarginNo overlap | o3-proNot measured |
| Inst. Following | Nemotron 3 Ultra81.7 | MarginNo overlap | o3-proNot measured |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Nemotron 3 Ultra | o3-pro | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Nemotron 3 Ultra$0 input / $0 output | o3-pro$20 input / $80 output | Nemotron 3 Ultra has the lower combined listed price. |
| Generation speedtokens per second | Nemotron 3 UltraNot available | o3-pro27 tok/s | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Nemotron 3 UltraNot available | o3-pro84.93 s | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Nemotron 3 Ultra1M | o3-pro200K | Nemotron 3 Ultra lists the larger context window. |
Benchmark Deep Dive
Agentic12 benchmarks
| Benchmark | Nemotron 3 Ultra | o3-pro | 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% | — | Not comparable |
| GDPval-AASource | 1164 | — | Not comparable |
| AA BriefcaseSource | 870 | — | Not comparable |
| AA EnterpriseOps-GymSource | 28.9% | — | Not comparable |
| AA Harvey LABSource | 3.3% | — | Not comparable |
Coding8 benchmarks
| Benchmark | Nemotron 3 Ultra | o3-pro | 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% | — | Not comparable |
| AA Coding IndexSource | 49.3% | — | Not comparable |
| Terminal-Bench HardSource | 36.4% | — | Not comparable |
| AA-SciCodeSource | 39.9% | — | Not comparable |
Reasoning3 benchmarks
Knowledge12 benchmarks
| Benchmark | Nemotron 3 Ultra | o3-pro | 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% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 37.8% | 32.5% | Nemotron 3 Ultra leads |
| AA-GPQA DiamondSource | 86.7% | 84.5% | Nemotron 3 Ultra leads |
| AA-HLESource | 26.6% | — | Not comparable |
| AA-Omniscience IndexSource | -0.8% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 28.5% | — | Not comparable |
| AA Openness IndexSource | 83.3% | — | Not comparable |
Multilingual1 benchmarks
| Benchmark | Nemotron 3 Ultra | o3-pro | Result |
|---|---|---|---|
| MMLU-ProXSource | 83% | — | Not comparable |
Multimodal1 benchmarks
| Benchmark | Nemotron 3 Ultra | o3-pro | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1132 | — | Not comparable |
Frequently Asked Questions (3)
Can I compare Nemotron 3 Ultra and o3-pro on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
What data is available for Nemotron 3 Ultra and o3-pro today?
Nemotron 3 Ultra: $0.00 input / $0.00 output per 1M tokens o3-pro: $20.00 input / $80.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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