# Ornith-1.5-397B vs Particle-1

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

- Canonical page: https://benchlm.ai/compare/ornith-1-5-397b-vs-particle-1
- Last updated: October 29, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Ornith-1.5-397B leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Ornith-1.5-397B has the higher overall point estimate 62.47 to 0. Conditional score ranges do not establish rank confidence.
- The biggest single benchmark swing is DeepSWE in Coding, with scores of 56.0% and 72.6%.
- Ornith-1.5-397B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Particle-1 also has the larger context window at 1M.

## Model Snapshot

| Property | Ornith-1.5-397B | Particle-1 |
|----------|----------|----------|
| Creator | Ornith AI | Particle AI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 1M |
| Overall Score | 62.47 | null |
| Benchmarks Covered | 18 | 5 |
| Pricing (input/output) | $0.00 / $0.00 | $0.25 / $1.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Ornith-1.5-397B public-lane score: 59.9 (Estimated · #30/135)
- Particle-1 public-lane score: Coming soon

| Benchmark | Ornith-1.5-397B | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 86.1% | 79.9% | 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 |

### Coding

- Winner: Not comparable
- Ornith-1.5-397B public-lane score: 54.6 (Estimated · #33/156)
- Particle-1 public-lane score: Coming soon

| Benchmark | Ornith-1.5-397B | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 86.1% | 79.9% | 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% | 72.6% | Particle-1 |
| frontierBench | 13.5% | Coming soon | Coming soon |
| NL2Repo | 59.5% | Coming soon | Coming soon |

### Knowledge

- Winner: Not comparable
- Ornith-1.5-397B public-lane score: 64.7 (Estimated · #32/179)
- Particle-1 public-lane score: Coming soon

| Benchmark | Ornith-1.5-397B | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.8% | Coming soon | Coming soon |
| GPQA-D | 92.8% | 90.4% | Ornith-1.5-397B |
| HLE | 44.6% | Coming soon | Coming soon |
| HLE w/o tools | 44.6% | Coming soon | Coming soon |
| MMLU | Coming soon | 86.1% | Coming soon |

## FAQ

### Which is better overall, Ornith-1.5-397B or Particle-1?

Ornith-1.5-397B has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

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

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

### How many benchmarks does Particle-1 cover on BenchLM?

Particle-1 currently has 5 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Ornith-1.5-397B vs Ornith-1.5-35B-A3B](/compare/ornith-1-5-35b-a3b-vs-ornith-1-5-397b)
- [Particle-1 vs Ornith-1.5-35B-A3B](/compare/ornith-1-5-35b-a3b-vs-particle-1)
- [Ornith-1.5-397B vs Ornith-1.5-9B](/compare/ornith-1-5-397b-vs-ornith-1-5-9b)
- [Particle-1 vs Ornith-1.5-9B](/compare/ornith-1-5-9b-vs-particle-1)

## Explore More

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