# Claude Sonnet 4.5 vs Ornith-1.5-9B

> Side-by-side benchmark comparison for Claude Sonnet 4.5 and Ornith-1.5-9B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-sonnet-4-5-vs-ornith-1-5-9b
- Last updated: October 2, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Sonnet 4.5 and Ornith-1.5-9B share only 2 sourced benchmark rows.

## Summary

- Only 2 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-1.5-9B has the lower published output-token price.
- Ornith-1.5-9B has the larger published context window at 262K.

## Model Snapshot

| Property | Claude Sonnet 4.5 | Ornith-1.5-9B |
|----------|----------|----------|
| Creator | Anthropic | Ornith AI |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 262K |
| Independent public score (not head-to-head) | 49.14 | 28.63 |
| Benchmarks Covered | 11 | 16 |
| Pricing (input/output) | $3.00 / $15.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: 33.9 (Estimated · #74/119)
- Ornith-1.5-9B public-lane score: 18 (Estimated · #101/119)

| Benchmark | Claude Sonnet 4.5 | Ornith-1.5-9B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 50% | Coming soon | Coming soon |
| OSWorld-Verified | 61.4% | Coming soon | Coming soon |
| VITA-Bench | 17.0% | Coming soon | Coming soon |
| Gert Labs | 48.51% | Coming soon | Coming soon |
| JobBench | 27.7% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 46.2% | Coming soon |
| HLE w/ tools | Coming soon | 30.5% | Coming soon |
| MCP Atlas | Coming soon | 54.2% | Coming soon |
| Toolathlon-Verified | Coming soon | 41.2% | Coming soon |
| WideResearch | Coming soon | 59.5% | Coming soon |
| BrowseComp | Coming soon | 56.4% | Coming soon |
| Claw-Eval | Coming soon | 66.5% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: Coming soon
- Ornith-1.5-9B public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.5 | Ornith-1.5-9B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 77.2% | 70.6% | Claude Sonnet 4.5 |
| Terminal-Bench 2.1 | Coming soon | 46.2% | Coming soon |
| SWE-bench Pro | Coming soon | 47.5% | Coming soon |
| SWE Multilingual | Coming soon | 54.4% | Coming soon |
| NL2Repo | Coming soon | 32.4% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: 19.1 (Unranked · 1 rankable row)
- Ornith-1.5-9B public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.5 | Ornith-1.5-9B | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 13.6% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: Coming soon
- Ornith-1.5-9B public-lane score: 30.6 (Estimated · #134/171)

| Benchmark | Claude Sonnet 4.5 | Ornith-1.5-9B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 83.4% | 86.4% | Ornith-1.5-9B |
| GPQA-D | Coming soon | 86.4% | Coming soon |
| HLE | Coming soon | 20.2% | Coming soon |
| HLE w/o tools | Coming soon | 20.2% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: 34.6 (Unranked · 2 rankable rows)
- Ornith-1.5-9B public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.5 | Ornith-1.5-9B | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | 87% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 13.495% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 4.167% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Sonnet 4.5 and Ornith-1.5-9B?

Not yet. The models share only 2 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

- [Claude Sonnet 4.5 vs Claude Sonnet 4.5 Thinking](/compare/claude-sonnet-4-5-vs-claude-sonnet-4-5-thinking)
- [Ornith-1.5-9B vs Claude Sonnet 4.5 Thinking](/compare/claude-sonnet-4-5-thinking-vs-ornith-1-5-9b)
- [Claude Sonnet 4.5 vs Ornith-1.5-397B](/compare/claude-sonnet-4-5-vs-ornith-1-5-397b)
- [Ornith-1.5-9B vs Ornith-1.5-397B](/compare/ornith-1-5-397b-vs-ornith-1-5-9b)

## Explore More

- [Claude Sonnet 4.5 profile](/models/claude-sonnet-4-5)
- [Ornith-1.5-9B profile](/models/ornith-1-5-9b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)