# Claude Opus 4.6 vs Nemotron 3 Ultra

> Side-by-side benchmark comparison for Claude Opus 4.6 and Nemotron 3 Ultra across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-6-vs-nemotron-3-ultra
- Last updated: October 15, 2026

- Shared sourced benchmarks: 7
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Claude Opus 4.6 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Claude Opus 4.6 has the higher overall point estimate 62.36 to 47.12. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in instruction following, where the averages are 52.4 for Claude Opus 4.6 and 92.1 for Nemotron 3 Ultra.
- The biggest single benchmark swing is BrowseComp in Agentic, with scores of 83.7% and 44.4%.
- Nemotron 3 Ultra is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Claude Opus 4.6 | Nemotron 3 Ultra |
|----------|----------|----------|
| Creator | Anthropic | NVIDIA |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 62.36 | 47.12 |
| Benchmarks Covered | 36 | 24 |
| Pricing (input/output) | $5.00 / $25.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Claude Opus 4.6
- Claude Opus 4.6 public-lane score: 45.8 (Supported · #56/126)
- Nemotron 3 Ultra public-lane score: 28 (Supported · #95/126)

| Benchmark | Claude Opus 4.6 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 65.4% | Coming soon | Coming soon |
| BrowseComp | 83.7% | 44.4% | Claude Opus 4.6 |
| OSWorld-Verified | 72.7% | Coming soon | Coming soon |
| AndroidWorld | 62.0% | Coming soon | Coming soon |
| Claw-Eval | 70.4% | Coming soon | Coming soon |
| DeepSearchQA | 73.7% | Coming soon | Coming soon |
| CyberGym | 66.6% | Coming soon | Coming soon |
| Gert Labs | 61.85% | Coming soon | Coming soon |
| ResearchClawBench | 19.9% | Coming soon | Coming soon |
| JobBench | 36.7% | Coming soon | Coming soon |
| ApprenticeBench | 5% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 56.4% | Coming soon |
| PinchBench | Coming soon | 90.0% | Coming soon |
| τ³-bench results | Coming soon | 70.9% | Coming soon |
| HLE w/ tools | Coming soon | 37.4% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 50.9% | Coming soon |

### Coding

- Winner: Claude Opus 4.6
- Claude Opus 4.6 public-lane score: 46.1 (Supported · #51/149)
- Nemotron 3 Ultra public-lane score: 21.9 (Supported · #115/149)

| Benchmark | Claude Opus 4.6 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80.8% | 71.9% | Claude Opus 4.6 |
| SWE-bench Verified* | 75.6% | Coming soon | Coming soon |
| LiveCodeBench Pro | 70.7% | Coming soon | Coming soon |
| SWE-bench Pro | 53.4% | Coming soon | Coming soon |
| SWE-Rebench | 65.3% | Coming soon | Coming soon |
| React Native Evals | 84.1% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 65.4% | Coming soon | Coming soon |
| Vibe Code Bench | 57.57% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 26.9% | Coming soon | Coming soon |
| SWE Multilingual | Coming soon | 67.7% | Coming soon |
| LiveCodeBench v6 | Coming soon | 89.0% | Coming soon |
| SciCode | Coming soon | 44.6% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 56.4% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 86.0% | Coming soon |
| SWE-bench (Vals) | Coming soon | 69.0% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Opus 4.6 public-lane score: 71.9 (Unranked · 2 rankable rows)
- Nemotron 3 Ultra public-lane score: 70.8 (#20/29)

| Benchmark | Claude Opus 4.6 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| CritPt | Coming soon | 3.1% | Coming soon |
| LongBench v2 | Coming soon | 61.9% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Claude Opus 4.6 public-lane score: 74.5 (#25/54)
- Nemotron 3 Ultra public-lane score: Coming soon

| Benchmark | Claude Opus 4.6 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 77.3% | Coming soon | Coming soon |
| ERQA | 51.6% | Coming soon | Coming soon |
| ScreenSpot Pro | 83.1% | Coming soon | Coming soon |
| MedXpertQA (MM) | 64.8% | Coming soon | Coming soon |

### Knowledge

- Winner: Directional only
- Claude Opus 4.6 public-lane score: 58.8 (Estimated · #51/182)
- Nemotron 3 Ultra public-lane score: 50.3 (Estimated · #78/182)

| Benchmark | Claude Opus 4.6 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 91.3% | 87% | Claude Opus 4.6 |
| GPQA-D | 89.2% | 87.0% | Claude Opus 4.6 |
| SuperGPQA | 95% | Coming soon | Coming soon |
| MMLU-Pro | 82% | 86.8% | Nemotron 3 Ultra |
| MMLU-Pro (Arcee) | 89.1% | Coming soon | Coming soon |
| HLE | 53% | 26.7% | Claude Opus 4.6 |
| HLE w/o tools | 40% | 26.7% | Claude Opus 4.6 |
| HealthBench Hard | 14.8% | Coming soon | Coming soon |
| MedXpertQA (Text) | 52.1% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 86.1% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 85.8% | Coming soon |

### Multilingual

- Winner: Not comparable
- Claude Opus 4.6 public-lane score: Coming soon
- Nemotron 3 Ultra public-lane score: 89.2 (#7/17)

| Benchmark | Claude Opus 4.6 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 83% | Coming soon |

### Instruction Following

- Winner: Directional only
- Claude Opus 4.6 public-lane score: 52.4 (#85/146)
- Nemotron 3 Ultra public-lane score: 92.1 (#20/146)

| Benchmark | Claude Opus 4.6 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 81.7% | Coming soon |

### Mathematics

- Winner: Not comparable
- Claude Opus 4.6 public-lane score: 69.1 (Unranked · 3 rankable rows)
- Nemotron 3 Ultra public-lane score: Coming soon

| Benchmark | Claude Opus 4.6 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| AIME25 (Arcee) | 99.8% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 65.965% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 26.829% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Claude Opus 4.6 or Nemotron 3 Ultra?

Claude Opus 4.6 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Claude Opus 4.6 and Nemotron 3 Ultra?

The widest category gap is in instruction following, where the averages are 52.4 for Claude Opus 4.6 and 92.1 for Nemotron 3 Ultra.

### How many benchmarks does Claude Opus 4.6 cover on BenchLM?

Claude Opus 4.6 currently has 36 sourced benchmark scores on BenchLM.

### How many benchmarks does Nemotron 3 Ultra cover on BenchLM?

Nemotron 3 Ultra currently has 24 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Opus 4.6 vs Claude Opus 4.6 (Adaptive)](/compare/claude-opus-4-6-vs-claude-opus-4-6-thinking)
- [Nemotron 3 Ultra vs Claude Opus 4.6 (Adaptive)](/compare/claude-opus-4-6-thinking-vs-nemotron-3-ultra)
- [Claude Opus 4.6 vs Claude Opus 5.5](/compare/claude-opus-4-6-vs-claude-opus-5-5)
- [Nemotron 3 Ultra vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-nemotron-3-ultra)

## Explore More

- [Claude Opus 4.6 profile](/models/claude-opus-4-6)
- [Nemotron 3 Ultra profile](/models/nemotron-3-ultra)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)