# Ornith-1.5-397B vs Ternary Bonsai 2 27B

> Side-by-side benchmark comparison for Ornith-1.5-397B and Ternary Bonsai 2 27B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/ornith-1-5-397b-vs-ternary-bonsai-2-27b
- Last updated: September 18, 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. Ternary Bonsai 2 27B 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 65.32 to 50.78.
- The clearest category separation is in agentic, where the averages are 60.9 for Ornith-1.5-397B and 49.9 for Ternary Bonsai 2 27B.
- The biggest single benchmark swing is Terminal-Bench 2.1 in Agentic, with scores of 86.1% and 52.8%.

## Model Snapshot

| Property | Ornith-1.5-397B | Ternary Bonsai 2 27B |
|----------|----------|----------|
| Creator | Ornith AI | Prism ML |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 262K |
| Overall Score | 65.32 | 50.78 |
| Benchmarks Covered | 18 | 21 |
| Pricing (input/output) | $0.00 / $0.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Ornith-1.5-397B public-lane score: 60.9 (Estimated · #17/154)
- Ternary Bonsai 2 27B public-lane score: 49.9 (Estimated · #59/154)

| Benchmark | Ornith-1.5-397B | Ternary Bonsai 2 27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 86.1% | 52.8% | 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 |
| τ²-bench results | Coming soon | 80.2% | Coming soon |
| BFCL v3 | Coming soon | 74.9% | Coming soon |

### Coding

- Winner: Coming soon
- Ornith-1.5-397B public-lane score: 59 (Estimated · #25/154)
- Ternary Bonsai 2 27B public-lane score: 49.9 (Estimated · #64/154)

| Benchmark | Ornith-1.5-397B | Ternary Bonsai 2 27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 86.1% | 52.8% | Ornith-1.5-397B |
| SWE-bench Verified | 86% | 60.8% | Ornith-1.5-397B |
| SWE-bench Pro | 65.1% | Coming soon | Coming soon |
| SWE Multilingual | 79.6% | Coming soon | Coming soon |
| DeepSWE | 56.0% | Coming soon | Coming soon |
| frontierBench | 13.5% | Coming soon | Coming soon |
| NL2Repo | 59.5% | Coming soon | Coming soon |
| LiveCodeBench v6 | Coming soon | 90.1% | Coming soon |
| BigCodeBench | Coming soon | 58.1% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Ornith-1.5-397B public-lane score: Coming soon
- Ternary Bonsai 2 27B public-lane score: Coming soon

| Benchmark | Ornith-1.5-397B | Ternary Bonsai 2 27B | Winner |
|-----------|-----------|-----------|--------|
| CharXiv (overall) | Coming soon | 80.0% | Coming soon |
| A-OKVQA | Coming soon | 86.8% | Coming soon |
| OmniDocBench 1.6 | Coming soon | 89.1% | Coming soon |
| RealWorldQA | Coming soon | 80.1% | Coming soon |
| OCRBench V2 | Coming soon | 56.9% | Coming soon |

### Reasoning

- Winner: Coming soon
- Ornith-1.5-397B public-lane score: Coming soon
- Ternary Bonsai 2 27B public-lane score: 73.9 (Unranked · 1 rankable row)

### Knowledge

- Winner: Coming soon
- Ornith-1.5-397B public-lane score: 60.5 (Estimated · #35/184)
- Ternary Bonsai 2 27B public-lane score: 50.6 (Estimated · #78/184)

| Benchmark | Ornith-1.5-397B | Ternary Bonsai 2 27B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.8% | 85.8% | Ornith-1.5-397B |
| GPQA-D | 92.8% | 85.8% | Ornith-1.5-397B |
| HLE | 44.6% | Coming soon | Coming soon |
| HLE w/o tools | 44.6% | Coming soon | Coming soon |
| MMLU-Redux | Coming soon | 89.1% | Coming soon |

### Instruction Following

- Winner: Coming soon
- Ornith-1.5-397B public-lane score: Coming soon
- Ternary Bonsai 2 27B public-lane score: 71 (#64/124)

| Benchmark | Ornith-1.5-397B | Ternary Bonsai 2 27B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 91.3% | Coming soon |
| IFBench | Coming soon | 74% | Coming soon |

### Mathematics

- Winner: Coming soon
- Ornith-1.5-397B public-lane score: Coming soon
- Ternary Bonsai 2 27B public-lane score: 76.8 (Unranked · 4 rankable rows)

| Benchmark | Ornith-1.5-397B | Ternary Bonsai 2 27B | Winner |
|-----------|-----------|-----------|--------|
| GSM8K | Coming soon | 96.7% | Coming soon |
| MATH-500 | Coming soon | 98.8% | Coming soon |
| AIME 2025 | Coming soon | 95% | Coming soon |
| AIME26 | Coming soon | 95.8% | Coming soon |

## FAQ

### Which is better overall, Ornith-1.5-397B or Ternary Bonsai 2 27B?

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

### Where is the biggest gap between Ornith-1.5-397B and Ternary Bonsai 2 27B?

The widest category gap is in agentic, where the averages are 60.9 for Ornith-1.5-397B and 49.9 for Ternary Bonsai 2 27B.

### 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 Ternary Bonsai 2 27B cover on BenchLM?

Ternary Bonsai 2 27B currently has 21 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)
- [Ternary Bonsai 2 27B vs Ornith-1.5-35B-A3B](/compare/ornith-1-5-35b-a3b-vs-ternary-bonsai-2-27b)
- [Ornith-1.5-397B vs Ornith-1.5-9B](/compare/ornith-1-5-397b-vs-ornith-1-5-9b)
- [Ternary Bonsai 2 27B vs Ornith-1.5-9B](/compare/ornith-1-5-9b-vs-ternary-bonsai-2-27b)

## Explore More

- [Ornith-1.5-397B profile](/models/ornith-1-5-397b)
- [Ternary Bonsai 2 27B profile](/models/ternary-bonsai-2-27b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)