# Inkling vs Ornith-1.5-397B

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

- Canonical page: https://benchlm.ai/compare/inkling-vs-ornith-1-5-397b
- Last updated: October 2, 2026

- Shared sourced benchmarks: 10
- 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 62.72 to 54.8. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in agentic, where the averages are 36.2 for Inkling and 56.8 for Ornith-1.5-397B.
- The biggest single benchmark swing is Terminal-Bench 2.1 in Agentic, with scores of 63.8% and 86.1%.
- Ornith-1.5-397B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Inkling also has the larger context window at 1M.

## Model Snapshot

| Property | Inkling | Ornith-1.5-397B |
|----------|----------|----------|
| Creator | Thinking Machines Lab | Ornith AI |
| Type | Open Weight | Open Weight |
| Reasoning | Hybrid | Reasoning |
| Context | 1M | 262K |
| Overall Score | 54.8 | 62.72 |
| Benchmarks Covered | 22 | 18 |
| Pricing (input/output) | $1.87 / $4.68 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Inkling public-lane score: 36.2 (Supported · #66/119)
- Ornith-1.5-397B public-lane score: 56.8 (Estimated · #29/119)

| Benchmark | Inkling | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 63.8% | 86.1% | Ornith-1.5-397B |
| BrowseComp | 77.1% | 86.6% | Ornith-1.5-397B |
| MCP Atlas | 74.1% | 80% | Ornith-1.5-397B |
| Terminal-Bench 2.1 (Vals) | 47.6% | Coming soon | Coming soon |
| CWE-bench v1 | 37.0% | Coming soon | Coming soon |
| HLE w/ tools | Coming soon | 56.1% | Coming soon |
| Toolathlon-Verified | Coming soon | 71.2% | Coming soon |
| WideResearch | Coming soon | 80.8% | Coming soon |
| Claw-Eval | Coming soon | 81.4% | Coming soon |

### Coding

- Winner: Directional only
- Inkling public-lane score: 36.4 (Supported · #74/144)
- Ornith-1.5-397B public-lane score: 54.7 (Estimated · #34/144)

| Benchmark | Inkling | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 77.6% | 86% | Ornith-1.5-397B |
| SWE-bench Pro | 54.3% | 65.1% | Ornith-1.5-397B |
| Terminal-Bench 2.1 | 63.8% | 86.1% | Ornith-1.5-397B |
| FrontierSWE v2 | 4.1% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 85.5% | Coming soon | Coming soon |
| SWE-bench (Vals) | 77.6% | Coming soon | 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 |

### Reasoning

- Winner: Not comparable
- Inkling public-lane score: 75.5 (#13/27)
- Ornith-1.5-397B public-lane score: Coming soon

### Multimodal & Grounded

- Winner: Not comparable
- Inkling public-lane score: 49.7 (#40/49)
- Ornith-1.5-397B public-lane score: Coming soon

| Benchmark | Inkling | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 73.5% | Coming soon | Coming soon |
| CharXiv | 82% | Coming soon | Coming soon |
| CharXiv w/o tools | 78.1% | Coming soon | Coming soon |

### Knowledge

- Winner: Directional only
- Inkling public-lane score: 54.1 (Supported · #52/171)
- Ornith-1.5-397B public-lane score: 63.3 (Estimated · #36/171)

| Benchmark | Inkling | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 87.9% | 92.8% | Ornith-1.5-397B |
| GPQA-D | 87.9% | 92.8% | Ornith-1.5-397B |
| HLE | 46% | 44.6% | Inkling |
| HLE w/o tools | 30% | 44.6% | Ornith-1.5-397B |
| GPQA Diamond (Vals) | 87.1% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.3% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- Inkling public-lane score: 83.2 (#44/125)
- Ornith-1.5-397B public-lane score: Coming soon

| Benchmark | Inkling | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 79.8% | Coming soon | Coming soon |

### Mathematics

- Winner: Not comparable
- Inkling public-lane score: 78.5 (Unranked · 1 rankable row)
- Ornith-1.5-397B public-lane score: Coming soon

| Benchmark | Inkling | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 97.1% | Coming soon | Coming soon |

## FAQ

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

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

### Where is the biggest gap between Inkling and Ornith-1.5-397B?

The widest category gap is in agentic, where the averages are 36.2 for Inkling and 56.8 for Ornith-1.5-397B.

### How many benchmarks does Inkling cover on BenchLM?

Inkling currently has 22 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

- [Inkling vs Inkling-Small](/compare/inkling-vs-inkling-small)
- [Ornith-1.5-397B vs Inkling-Small](/compare/inkling-small-vs-ornith-1-5-397b)
- [Inkling vs Ornith-1.5-35B-A3B](/compare/inkling-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)

## Explore More

- [Inkling profile](/models/inkling)
- [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)