# Ornith-1.5-397B vs Ultramarine 1 Flash

> Side-by-side benchmark comparison for Ornith-1.5-397B and Ultramarine 1 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/ornith-1-5-397b-vs-ultramarine-1-flash
- Last updated: October 15, 2026

- Shared sourced benchmarks: 3
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Ornith-1.5-397B and Ultramarine 1 Flash share only 3 sourced benchmark rows.

## Summary

- Only 3 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Ornith-1.5-397B has the lower published output-token price.
- Ornith-1.5-397B has the larger published context window at 262K.

## Model Snapshot

| Property | Ornith-1.5-397B | Ultramarine 1 Flash |
|----------|----------|----------|
| Creator | Ornith AI | Paper Instruments |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | Not disclosed |
| Independent public score (not head-to-head) | 62.57 | null |
| Benchmarks Covered | 18 | 5 |
| Pricing (input/output) | $0.00 / $0.00 | $0.15 / $0.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Ornith-1.5-397B public-lane score: 59 (Estimated · #30/126)
- Ultramarine 1 Flash public-lane score: Coming soon

| Benchmark | Ornith-1.5-397B | Ultramarine 1 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 86.1% | 83.2% | Ornith-1.5-397B |
| HLE w/ tools | 56.1% | Coming soon | Coming soon |
| MCP Atlas | 80% | Coming soon | Coming soon |
| Toolathlon-Verified | 71.2% | Coming soon | Coming soon |
| WideResearch | 80.8% | Coming soon | Coming soon |
| BrowseComp | 86.6% | Coming soon | Coming soon |
| Claw-Eval | 81.4% | Coming soon | Coming soon |
| JobBench | Coming soon | 62.9% | Coming soon |
| AutomationBench | Coming soon | 50.2% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Ornith-1.5-397B public-lane score: 53.6 (Estimated · #34/149)
- Ultramarine 1 Flash public-lane score: Coming soon

| Benchmark | Ornith-1.5-397B | Ultramarine 1 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 86.1% | 83.2% | Ornith-1.5-397B |
| SWE-bench Verified | 86% | Coming soon | Coming soon |
| SWE-bench Pro | 65.1% | Coming soon | Coming soon |
| SWE Multilingual | 79.6% | Coming soon | Coming soon |
| DeepSWE | 56.0% | 61.5% | Ultramarine 1 Flash |
| frontierBench | 13.5% | Coming soon | Coming soon |
| NL2Repo | 59.5% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Ornith-1.5-397B public-lane score: 64.7 (Estimated · #37/182)
- Ultramarine 1 Flash public-lane score: Coming soon

| Benchmark | Ornith-1.5-397B | Ultramarine 1 Flash | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.8% | Coming soon | Coming soon |
| GPQA-D | 92.8% | Coming soon | Coming soon |
| HLE | 44.6% | Coming soon | Coming soon |
| HLE w/o tools | 44.6% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Ornith-1.5-397B and Ultramarine 1 Flash?

Not yet. The models share only 3 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Ornith-1.5-397B vs Ornith-1.5-35B-A3B](/compare/ornith-1-5-35b-a3b-vs-ornith-1-5-397b)
- [Ultramarine 1 Flash vs Ornith-1.5-35B-A3B](/compare/ornith-1-5-35b-a3b-vs-ultramarine-1-flash)
- [Ornith-1.5-397B vs Ornith-1.5-9B](/compare/ornith-1-5-397b-vs-ornith-1-5-9b)
- [Ultramarine 1 Flash vs Ornith-1.5-9B](/compare/ornith-1-5-9b-vs-ultramarine-1-flash)

## Explore More

- [Ornith-1.5-397B profile](/models/ornith-1-5-397b)
- [Ultramarine 1 Flash profile](/models/ultramarine-1-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)