Model comparison
Nemotron 3 Ultra vs Nemotron Ultra 253B
Head-to-head evidence from 12 shared benchmark results across 5 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Verified leaderboard positions: Nemotron 3 Ultra #24; Nemotron Ultra 253B unranked
BenchAlign evidence: Nemotron 3 Ultra not scored; Nemotron Ultra 253B estimated. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Nemotron 3 Ultra and Nemotron Ultra 253B share 12 comparable benchmark results. 0 of 8 categories are comparable. 27 results are unique to Nemotron 3 Ultra; 0 to Nemotron Ultra 253B.
Updated July 16, 2026- Shared results
- 12
- Nemotron 3 Ultra only
- 27
- Nemotron Ultra 253B only
- 0
- Comparable categories
- 0 / 8
Benchmark data for Nemotron 3 Ultra and Nemotron Ultra 253B is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 12 shared benchmark results across 5 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.
Nemotron 3 Ultra has the larger context window at 1M, compared with 32K for Nemotron Ultra 253B.
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 | Nemotron Ultra 253B |
|---|---|---|---|
| Agentic | Nemotron 3 Ultra51.3 | MarginNo overlap | Nemotron Ultra 253BNot measured |
| Coding | Nemotron 3 Ultra58.3 | MarginNo overlap | Nemotron Ultra 253BNot measured |
| Reasoning | Nemotron 3 Ultra61.9 | MarginNo overlap | Nemotron Ultra 253BNot measured |
| Knowledge | Nemotron 3 Ultra54.2 | MarginNo overlap | Nemotron Ultra 253BNot measured |
| Multilingual | Nemotron 3 Ultra83.0 | MarginNo overlap | Nemotron Ultra 253BNot measured |
| Inst. Following | Nemotron 3 Ultra81.7 | MarginNo overlap | Nemotron Ultra 253BNot measured |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Nemotron 3 Ultra | Nemotron Ultra 253B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Nemotron 3 Ultra$0 input / $0 output | Nemotron Ultra 253B$0 input / $0 output | Listed prices are equal. |
| Generation speedtokens per second | Nemotron 3 UltraNot available | Nemotron Ultra 253BNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Nemotron 3 UltraNot available | Nemotron Ultra 253BNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Nemotron 3 Ultra1M | Nemotron Ultra 253B32K | Nemotron 3 Ultra lists the larger context window. |
Benchmark Deep Dive
Agentic12 benchmarks
| Benchmark | Nemotron 3 Ultra | Nemotron Ultra 253B | 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% | 11.4% | 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 | Nemotron Ultra 253B | 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% | 2.3% | Nemotron 3 Ultra leads |
| AA-SciCodeSource | 39.9% | 34.7% | Nemotron 3 Ultra leads |
Reasoning3 benchmarks
Knowledge12 benchmarks
| Benchmark | Nemotron 3 Ultra | Nemotron Ultra 253B | 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% | 19.9% | Nemotron 3 Ultra leads |
| Artificial Analysis Intelligence IndexSource | 37.8% | 9.1% | Nemotron 3 Ultra leads |
| AA-GPQA DiamondSource | 86.7% | 72.8% | Nemotron 3 Ultra leads |
| AA-HLESource | 26.6% | 8.1% | Nemotron 3 Ultra leads |
| AA-Omniscience IndexSource | -0.8% | -45.5% | Nemotron 3 Ultra leads |
| AA-Omniscience Hallucination RateSource | 28.5% | 81.7% | Nemotron 3 Ultra leads |
| AA Openness IndexSource | 83.3% | — | Not comparable |
Multilingual1 benchmarks
| Benchmark | Nemotron 3 Ultra | Nemotron Ultra 253B | Result |
|---|---|---|---|
| MMLU-ProXSource | 83% | — | Not comparable |
Multimodal1 benchmarks
| Benchmark | Nemotron 3 Ultra | Nemotron Ultra 253B | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1132 | — | Not comparable |
Frequently Asked Questions (3)
Can I compare Nemotron 3 Ultra and Nemotron Ultra 253B 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 Nemotron Ultra 253B today?
Nemotron 3 Ultra: $0.00 input / $0.00 output per 1M tokens Nemotron Ultra 253B: $0.00 input / $0.00 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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