Model comparison
Nemotron 3 Ultra vs o3
Head-to-head evidence from 13 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Verified leaderboard positions: Nemotron 3 Ultra #24; o3 unranked
BenchAlign evidence: Nemotron 3 Ultra not scored; o3 supported. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Nemotron 3 Ultra and o3 share 13 comparable benchmark results. 0 of 8 categories are comparable. 26 results are unique to Nemotron 3 Ultra; 4 to o3.
Updated July 16, 2026- Shared results
- 13
- Nemotron 3 Ultra only
- 26
- o3 only
- 4
- Comparable categories
- 0 / 8
Benchmark data for Nemotron 3 Ultra and o3 is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 13 shared benchmark results across 6 evidence categories; 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 is priced at $2.00 input / $8.00 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.
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 |
|---|---|---|---|
| Agentic | Nemotron 3 Ultra51.3 | MarginNo overlap | o3Not measured |
| Coding | Nemotron 3 Ultra58.3 | MarginNo overlap | o3Not measured |
| Reasoning | Nemotron 3 Ultra61.9 | MarginNo overlap | o3Not measured |
| Knowledge | Nemotron 3 Ultra54.2 | MarginNo overlap | o3Not measured |
| Math | Nemotron 3 UltraNot measured | MarginNo overlap | o314.5 |
| Multilingual | Nemotron 3 Ultra83.0 | MarginNo overlap | o3Not measured |
| Inst. Following | Nemotron 3 Ultra81.7 | MarginNo overlap | o3Not measured |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Nemotron 3 Ultra | o3 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Nemotron 3 Ultra$0 input / $0 output | o3$2 input / $8 output | Nemotron 3 Ultra has the lower combined listed price. |
| Generation speedtokens per second | Nemotron 3 UltraNot available | o3118 tok/s | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Nemotron 3 UltraNot available | o35.38 s | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Nemotron 3 Ultra1M | o3200K | Nemotron 3 Ultra lists the larger context window. |
Benchmark Deep Dive
Agentic12 benchmarks
| Benchmark | Nemotron 3 Ultra | o3 | 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% | 80.7% | 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 |
Coding8 benchmarks
| Benchmark | Nemotron 3 Ultra | o3 | 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% | 37.1% | o3 leads |
| AA-SciCodeSource | 39.9% | 41.0% | o3 leads |
Reasoning3 benchmarks
Knowledge12 benchmarks
| Benchmark | Nemotron 3 Ultra | o3 | 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% | 38.4% | o3 leads |
| Artificial Analysis Intelligence IndexSource | 37.8% | 30.4% | Nemotron 3 Ultra leads |
| AA-GPQA DiamondSource | 86.7% | 82.7% | Nemotron 3 Ultra leads |
| AA-HLESource | 26.6% | 20.0% | Nemotron 3 Ultra leads |
| AA-Omniscience IndexSource | -0.8% | -15.3% | Nemotron 3 Ultra leads |
| AA-Omniscience Hallucination RateSource | 28.5% | 87.1% | Nemotron 3 Ultra leads |
| AA Openness IndexSource | 83.3% | — | Not comparable |
Math3 benchmarks
Multilingual1 benchmarks
| Benchmark | Nemotron 3 Ultra | o3 | Result |
|---|---|---|---|
| MMLU-ProXSource | 83% | — | Not comparable |
Multimodal2 benchmarks
Frequently Asked Questions (3)
Can I compare Nemotron 3 Ultra and o3 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 today?
Nemotron 3 Ultra: $0.00 input / $0.00 output per 1M tokens o3: $2.00 input / $8.00 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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