Model comparison
Claude 4.1 Opus vs Nemotron 3 Ultra
Head-to-head evidence from 3 shared benchmark results across 3 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Verified leaderboard positions: Claude 4.1 Opus unranked; Nemotron 3 Ultra #24
BenchAlign evidence: Claude 4.1 Opus supported; Nemotron 3 Ultra not scored. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude 4.1 Opus and Nemotron 3 Ultra share 3 comparable benchmark results. 1 of 8 categories are comparable. 1 result is unique to Claude 4.1 Opus; 36 to Nemotron 3 Ultra.
Updated July 16, 2026- Shared results
- 3
- Claude 4.1 Opus only
- 1
- Nemotron 3 Ultra only
- 36
- Comparable categories
- 1 / 8
Pick Nemotron 3 Ultra if you want the stronger benchmark profile. Claude 4.1 Opus only becomes the better choice if coding is the priority or you would rather avoid the extra latency and token burn of a reasoning model.
Confidence note. This is a partial-evidence comparison with 3 shared benchmark results across 3 evidence categories; 1 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 48. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude 4.1 Opus is also the more expensive model on tokens at $15.00 input / $75.00 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 is the reasoning model in the pair, while Claude 4.1 Opus is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Nemotron 3 Ultra gives you the larger context window at 1M, compared with 200K for Claude 4.1 Opus.
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 | Claude 4.1 Opus | Δ | Nemotron 3 Ultra |
|---|---|---|---|
| Coding | Claude 4.1 Opus74.5 | Margin← 16.2 | Nemotron 3 Ultra58.3 |
| Agentic | Claude 4.1 OpusNot measured | MarginNo overlap | Nemotron 3 Ultra51.3 |
| Reasoning | Claude 4.1 OpusNot measured | MarginNo overlap | Nemotron 3 Ultra61.9 |
| Knowledge | Claude 4.1 OpusNot measured | MarginNo overlap | Nemotron 3 Ultra54.2 |
| Multilingual | Claude 4.1 OpusNot measured | MarginNo overlap | Nemotron 3 Ultra83.0 |
| Inst. Following | Claude 4.1 OpusNot measured | MarginNo overlap | Nemotron 3 Ultra81.7 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
SWE-bench Verified
CodingA 74.5%B 71.9%Winner: Claude 4.1 OpusΔ 2.6SWE-bench Verified: Claude 4.1 Opus scored 74.5%; Nemotron 3 Ultra scored 71.9%. Claude 4.1 Opus wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Claude 4.1 Opus | Nemotron 3 Ultra | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude 4.1 Opus$15 input / $75 output | Nemotron 3 Ultra$0 input / $0 output | Nemotron 3 Ultra has the lower combined listed price. |
| Generation speedtokens per second | Claude 4.1 Opus29 tok/s | Nemotron 3 UltraNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Claude 4.1 Opus1.66 s | Nemotron 3 UltraNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Claude 4.1 Opus200K | Nemotron 3 Ultra1M | Nemotron 3 Ultra lists the larger context window. |
Benchmark Deep Dive
Agentic13 benchmarks
| Benchmark | Claude 4.1 Opus | Nemotron 3 Ultra | Result |
|---|---|---|---|
| JobBenchSource | 21.9% | — | Not comparable |
| 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 |
CodingClaude 4.1 Opus wins8 benchmarks
| Benchmark | Claude 4.1 Opus | Nemotron 3 Ultra | Result |
|---|---|---|---|
| SWE-bench VerifiedSource | 74.5% | 71.9% | Claude 4.1 Opus 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% | Not comparable |
| AA-SciCodeSource | — | 39.9% | Not comparable |
Reasoning3 benchmarks
Knowledge12 benchmarks
| Benchmark | Claude 4.1 Opus | Nemotron 3 Ultra | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 28.2% | 37.8% | Nemotron 3 Ultra leads |
| 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 |
| AA-GPQA DiamondSource | — | 86.7% | Not comparable |
| 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 | Claude 4.1 Opus | Nemotron 3 Ultra | Result |
|---|---|---|---|
| MMLU-ProXSource | — | 83% | Not comparable |
Multimodal1 benchmarks
| Benchmark | Claude 4.1 Opus | Nemotron 3 Ultra | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1211 | 1132 | Claude 4.1 Opus leads |
Frequently Asked Questions (2)
Which is better, Claude 4.1 Opus or Nemotron 3 Ultra?
Nemotron 3 Ultra is ahead on BenchLM's provisional leaderboard, 60 to 48. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 74.5% and 71.9%.
Which is better for coding, Claude 4.1 Opus or Nemotron 3 Ultra?
Claude 4.1 Opus has the edge for coding in this comparison, averaging 74.5 versus 58.3. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
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