# Inkling-Small vs Ornith-1.5-397B

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

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

- Shared sourced benchmarks: 11
- 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 55.12. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in agentic, where the averages are 35.3 for Inkling-Small and 56.8 for Ornith-1.5-397B.
- The biggest single benchmark swing is Terminal-Bench 2.1 in Agentic, with scores of 64.7% 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-Small also has the larger context window at 1M.

## Model Snapshot

| Property | Inkling-Small | Ornith-1.5-397B |
|----------|----------|----------|
| Creator | Thinking Machines Lab | Ornith AI |
| Type | Open Weight | Open Weight |
| Reasoning | Hybrid | Reasoning |
| Context | 1M | 262K |
| Overall Score | 55.12 | 62.72 |
| Benchmarks Covered | 25 | 18 |
| Pricing (input/output) | $0.58 / $1.44 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Inkling-Small public-lane score: 35.3 (Supported · #68/119)
- Ornith-1.5-397B public-lane score: 56.8 (Estimated · #29/119)

| Benchmark | Inkling-Small | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 64.7% | 86.1% | Ornith-1.5-397B |
| BrowseComp | 77.4% | 86.6% | Ornith-1.5-397B |
| MCP Atlas | 79.6% | 80% | Ornith-1.5-397B |
| Toolathlon-Verified | 54.4% | 71.2% | Ornith-1.5-397B |
| Terminal-Bench 2.1 (Vals) | 55.1% | Coming soon | Coming soon |
| HLE w/ tools | Coming soon | 56.1% | Coming soon |
| WideResearch | Coming soon | 80.8% | Coming soon |
| Claw-Eval | Coming soon | 81.4% | Coming soon |

### Coding

- Winner: Directional only
- Inkling-Small public-lane score: 40 (Supported · #65/144)
- Ornith-1.5-397B public-lane score: 54.7 (Estimated · #34/144)

| Benchmark | Inkling-Small | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80.2% | 86% | Ornith-1.5-397B |
| SWE-bench Pro | 55.9% | 65.1% | Ornith-1.5-397B |
| Terminal-Bench 2.1 | 64.7% | 86.1% | Ornith-1.5-397B |
| SciCode | 48.7% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 85.9% | Coming soon | Coming soon |
| SWE-bench (Vals) | 82.2% | 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-Small public-lane score: 51.4 (Unranked · 3 rankable rows)
- Ornith-1.5-397B public-lane score: Coming soon

| Benchmark | Inkling-Small | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 40.1% | Coming soon | Coming soon |
| CritPt | 8.3% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Inkling-Small public-lane score: 49.8 (#39/49)
- Ornith-1.5-397B public-lane score: Coming soon

| Benchmark | Inkling-Small | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 74% | Coming soon | Coming soon |
| CharXiv | 81.3% | Coming soon | Coming soon |
| CharXiv w/o tools | 77.4% | Coming soon | Coming soon |

### Knowledge

- Winner: Directional only
- Inkling-Small public-lane score: 53.8 (Supported · #55/171)
- Ornith-1.5-397B public-lane score: 63.3 (Estimated · #36/171)

| Benchmark | Inkling-Small | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 89.5% | 92.8% | Ornith-1.5-397B |
| GPQA-D | 89.5% | 92.8% | Ornith-1.5-397B |
| HLE | 47.8% | 44.6% | Inkling-Small |
| HLE w/o tools | 31.6% | 44.6% | Ornith-1.5-397B |
| GPQA Diamond (Vals) | 83.6% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 85.6% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- Inkling-Small public-lane score: 88.5 (#23/125)
- Ornith-1.5-397B public-lane score: Coming soon

| Benchmark | Inkling-Small | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 82.2% | Coming soon | Coming soon |

### Mathematics

- Winner: Not comparable
- Inkling-Small public-lane score: 76.5 (Unranked · 2 rankable rows)
- Ornith-1.5-397B public-lane score: Coming soon

| Benchmark | Inkling-Small | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 95.5% | Coming soon | Coming soon |
| HMMT Feb 2026 | 90.2% | Coming soon | Coming soon |

## FAQ

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

The widest category gap is in agentic, where the averages are 35.3 for Inkling-Small and 56.8 for Ornith-1.5-397B.

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

Inkling-Small currently has 25 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-Small vs Inkling](/compare/inkling-vs-inkling-small)
- [Ornith-1.5-397B vs Inkling](/compare/inkling-vs-ornith-1-5-397b)
- [Inkling-Small vs Ornith-1.5-35B-A3B](/compare/inkling-small-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-Small profile](/models/inkling-small)
- [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)