# Atria Dawn Preview vs Ornith-1.5-397B

> Side-by-side benchmark comparison for Atria Dawn Preview and Ornith-1.5-397B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/atria-dawn-preview-vs-ornith-1-5-397b
- Last updated: September 14, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Ornith-1.5-397B if you want the stronger benchmark profile. Atria Dawn Preview only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Ornith-1.5-397B leads overall 65.14 to 63.
- The clearest category separation is in coding, where the averages are 51.6 for Atria Dawn Preview and 58.7 for Ornith-1.5-397B.
- The biggest single benchmark swing is Terminal-Bench 2.1 in Agentic, with scores of 78.3% and 86.1%.
- Ornith-1.5-397B also has the larger context window at 262K.

## Model Snapshot

| Property | Atria Dawn Preview | Ornith-1.5-397B |
|----------|----------|----------|
| Creator | Shanghai Artificial Intelligence Laboratory | Ornith AI |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 256K | 262K |
| Overall Score | null | 65.14 |
| Benchmarks Covered | 13 | 18 |
| Pricing (input/output) | $0.00 / $0.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Atria Dawn Preview public-lane score: 57.9 (Estimated · #31/153)
- Ornith-1.5-397B public-lane score: 60.7 (Estimated · #18/153)

| Benchmark | Atria Dawn Preview | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| AutomationBench | 53.8% | Coming soon | Coming soon |
| BFCL v4 | 77.0% | Coming soon | Coming soon |
| CyberGym | 86.5% | Coming soon | Coming soon |
| DeepSearchQA | 96.0% | Coming soon | Coming soon |
| BrowseComp | 92.5% | 86.6% | Atria Dawn Preview |
| skillsBench | 66.4% | Coming soon | Coming soon |
| MLE-Bench Lite | 86.2% | Coming soon | Coming soon |
| WideResearch | 81.9% | 80.8% | Atria Dawn Preview |
| τ³-bench results | 41.2% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 78.3% | 86.1% | Ornith-1.5-397B |
| JobBench | 50.3% | Coming soon | Coming soon |
| HLE w/ tools | Coming soon | 56.1% | Coming soon |
| MCP Atlas | Coming soon | 80% | Coming soon |
| Toolathlon-Verified | Coming soon | 71.2% | Coming soon |
| Claw-Eval | Coming soon | 81.4% | Coming soon |

### Coding

- Winner: Coming soon
- Atria Dawn Preview public-lane score: 51.6 (Estimated · #51/152)
- Ornith-1.5-397B public-lane score: 58.7 (Estimated · #26/152)

| Benchmark | Atria Dawn Preview | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 78.3% | 86.1% | Ornith-1.5-397B |
| SWE-bench Pro | 59.6% | 65.1% | Ornith-1.5-397B |
| SWE-bench Verified | Coming soon | 86% | Coming soon |
| SWE Multilingual | Coming soon | 79.6% | Coming soon |
| DeepSWE | Coming soon | 56.0% | Coming soon |
| frontierBench | Coming soon | 13.5% | Coming soon |
| NL2Repo | Coming soon | 59.5% | Coming soon |

### Knowledge

- Winner: Coming soon
- Atria Dawn Preview public-lane score: Coming soon
- Ornith-1.5-397B public-lane score: 60.3 (Estimated · #37/183)

| Benchmark | Atria Dawn Preview | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 92.8% | Coming soon |
| GPQA-D | Coming soon | 92.8% | Coming soon |
| HLE | Coming soon | 44.6% | Coming soon |
| HLE w/o tools | Coming soon | 44.6% | Coming soon |

## FAQ

### Which is better overall, Atria Dawn Preview or Ornith-1.5-397B?

Ornith-1.5-397B is ahead overall on BenchLM right now.

### Where is the biggest gap between Atria Dawn Preview and Ornith-1.5-397B?

The widest category gap is in coding, where the averages are 51.6 for Atria Dawn Preview and 58.7 for Ornith-1.5-397B.

### How many benchmarks does Atria Dawn Preview cover on BenchLM?

Atria Dawn Preview currently has 13 sourced benchmark scores on BenchLM.

### How many benchmarks does Ornith-1.5-397B cover on BenchLM?

Ornith-1.5-397B currently has 18 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Atria Dawn Preview vs Ornith-1.5-35B-A3B](/compare/atria-dawn-preview-vs-ornith-1-5-35b-a3b)
- [Ornith-1.5-397B vs Ornith-1.5-35B-A3B](/compare/ornith-1-5-35b-a3b-vs-ornith-1-5-397b)
- [Atria Dawn Preview vs Ornith-1.5-9B](/compare/atria-dawn-preview-vs-ornith-1-5-9b)
- [Ornith-1.5-397B vs Ornith-1.5-9B](/compare/ornith-1-5-397b-vs-ornith-1-5-9b)

## Explore More

- [Atria Dawn Preview profile](/models/atria-dawn-preview)
- [Ornith-1.5-397B profile](/models/ornith-1-5-397b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)