# Nemotron 3 Ultra vs Ornith-1.5-35B-A3B

> Side-by-side benchmark comparison for Nemotron 3 Ultra and Ornith-1.5-35B-A3B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/nemotron-3-ultra-vs-ornith-1-5-35b-a3b
- Last updated: October 2, 2026

- Shared sourced benchmarks: 10
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Nemotron 3 Ultra leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Nemotron 3 Ultra has the higher overall point estimate 45.38 to 32.61. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in knowledge, where the averages are 47.5 for Nemotron 3 Ultra and 34.5 for Ornith-1.5-35B-A3B.
- The biggest single benchmark swing is BrowseComp in Agentic, with scores of 44.4% and 67.6%.
- Nemotron 3 Ultra also has the larger context window at 1M.

## Model Snapshot

| Property | Nemotron 3 Ultra | Ornith-1.5-35B-A3B |
|----------|----------|----------|
| Creator | NVIDIA | Ornith AI |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 262K |
| Overall Score | 45.38 | 32.61 |
| Benchmarks Covered | 24 | 18 |
| Pricing (input/output) | $0.00 / $0.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Nemotron 3 Ultra public-lane score: 26.1 (Supported · #90/119)
- Ornith-1.5-35B-A3B public-lane score: 23.5 (Estimated · #95/119)

| Benchmark | Nemotron 3 Ultra | Ornith-1.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 56.4% | 67.8% | Ornith-1.5-35B-A3B |
| PinchBench | 90.0% | Coming soon | Coming soon |
| BrowseComp | 44.4% | 67.6% | Ornith-1.5-35B-A3B |
| τ³-bench results | 70.9% | Coming soon | Coming soon |
| HLE w/ tools | 37.4% | 33.4% | Nemotron 3 Ultra |
| Terminal-Bench 2.1 (Vals) | 50.9% | Coming soon | Coming soon |
| MCP Atlas | Coming soon | 70.2% | Coming soon |
| Toolathlon-Verified | Coming soon | 48.7% | Coming soon |
| WideResearch | Coming soon | 67.8% | Coming soon |
| Claw-Eval | Coming soon | 72.5% | Coming soon |

### Coding

- Winner: Directional only
- Nemotron 3 Ultra public-lane score: 23.1 (Supported · #113/144)
- Ornith-1.5-35B-A3B public-lane score: 24 (Estimated · #110/144)

| Benchmark | Nemotron 3 Ultra | Ornith-1.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 71.9% | 79% | Ornith-1.5-35B-A3B |
| SWE Multilingual | 67.7% | 71.4% | Ornith-1.5-35B-A3B |
| LiveCodeBench v6 | 89.0% | Coming soon | Coming soon |
| SciCode | 44.6% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 56.4% | 67.8% | Ornith-1.5-35B-A3B |
| LiveCodeBench (Vals) | 86.0% | Coming soon | Coming soon |
| SWE-bench (Vals) | 69.0% | Coming soon | Coming soon |
| SWE-bench Pro | Coming soon | 59.6% | Coming soon |
| DeepSWE | Coming soon | 22.0% | Coming soon |
| frontierBench | Coming soon | 5.1% | Coming soon |
| NL2Repo | Coming soon | 46.2% | Coming soon |

### Reasoning

- Winner: Not comparable
- Nemotron 3 Ultra public-lane score: 51.8 (#26/27)
- Ornith-1.5-35B-A3B public-lane score: Coming soon

| Benchmark | Nemotron 3 Ultra | Ornith-1.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| CritPt | 3.1% | Coming soon | Coming soon |
| LongBench v2 | 61.9% | Coming soon | Coming soon |

### Knowledge

- Winner: Directional only
- Nemotron 3 Ultra public-lane score: 47.5 (Estimated · #78/171)
- Ornith-1.5-35B-A3B public-lane score: 34.5 (Estimated · #119/171)

| Benchmark | Nemotron 3 Ultra | Ornith-1.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 87% | 89.2% | Ornith-1.5-35B-A3B |
| GPQA-D | 87.0% | 89.2% | Ornith-1.5-35B-A3B |
| HLE | 26.7% | 25.6% | Nemotron 3 Ultra |
| HLE w/o tools | 26.7% | 25.6% | Nemotron 3 Ultra |
| MMLU-Pro | 86.8% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 86.1% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 85.8% | Coming soon | Coming soon |

### Multilingual

- Winner: Not comparable
- Nemotron 3 Ultra public-lane score: 89.2 (#7/16)
- Ornith-1.5-35B-A3B public-lane score: Coming soon

| Benchmark | Nemotron 3 Ultra | Ornith-1.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | 83% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- Nemotron 3 Ultra public-lane score: 87.5 (#28/125)
- Ornith-1.5-35B-A3B public-lane score: Coming soon

| Benchmark | Nemotron 3 Ultra | Ornith-1.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 81.7% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Nemotron 3 Ultra or Ornith-1.5-35B-A3B?

Nemotron 3 Ultra has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Nemotron 3 Ultra and Ornith-1.5-35B-A3B?

The widest category gap is in knowledge, where the averages are 47.5 for Nemotron 3 Ultra and 34.5 for Ornith-1.5-35B-A3B.

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

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

### How many benchmarks does Ornith-1.5-35B-A3B cover on BenchLM?

Ornith-1.5-35B-A3B currently has 18 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Nemotron 3 Ultra vs Ornith-1.5-397B](/compare/nemotron-3-ultra-vs-ornith-1-5-397b)
- [Ornith-1.5-35B-A3B vs Ornith-1.5-397B](/compare/ornith-1-5-35b-a3b-vs-ornith-1-5-397b)
- [Nemotron 3 Ultra vs Ornith-1.5-9B](/compare/nemotron-3-ultra-vs-ornith-1-5-9b)
- [Ornith-1.5-35B-A3B vs Ornith-1.5-9B](/compare/ornith-1-5-35b-a3b-vs-ornith-1-5-9b)

## Explore More

- [Nemotron 3 Ultra profile](/models/nemotron-3-ultra)
- [Ornith-1.5-35B-A3B profile](/models/ornith-1-5-35b-a3b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)