# Ornith-1.5-397B vs Step 3.7 Flash

> Side-by-side benchmark comparison for Ornith-1.5-397B and Step 3.7 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/ornith-1-5-397b-vs-step-3-7-flash
- Last updated: October 2, 2026

- Shared sourced benchmarks: 6
- 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 44.85. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in coding, where the averages are 54.7 for Ornith-1.5-397B and 32.7 for Step 3.7 Flash.
- The biggest single benchmark swing is Terminal-Bench 2.1 in Agentic, with scores of 86.1% and 59.5%.
- Ornith-1.5-397B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Ornith-1.5-397B also has the larger context window at 262K.

## Model Snapshot

| Property | Ornith-1.5-397B | Step 3.7 Flash |
|----------|----------|----------|
| Creator | Ornith AI | StepFun |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 256K |
| Overall Score | 62.72 | 44.85 |
| Benchmarks Covered | 18 | 11 |
| Pricing (input/output) | $0.00 / $0.00 | $0.20 / $1.15 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Ornith-1.5-397B public-lane score: 56.8 (Estimated · #29/119)
- Step 3.7 Flash public-lane score: 35.8 (Estimated · #67/119)

| Benchmark | Ornith-1.5-397B | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 86.1% | 59.5% | Ornith-1.5-397B |
| HLE w/ tools | 56.1% | 47.2% | Ornith-1.5-397B |
| 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% | 75.8% | Ornith-1.5-397B |
| Claw-Eval | 81.4% | 67.1% | Ornith-1.5-397B |
| DeepSearchQA | Coming soon | 92.8% | Coming soon |
| Toolathlon | Coming soon | 49.5% | Coming soon |
| Gert Labs | Coming soon | 51.57% | Coming soon |

### Coding

- Winner: Directional only
- Ornith-1.5-397B public-lane score: 54.7 (Estimated · #34/144)
- Step 3.7 Flash public-lane score: 32.7 (Estimated · #88/144)

| Benchmark | Ornith-1.5-397B | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 86.1% | 59.5% | Ornith-1.5-397B |
| SWE-bench Verified | 86% | Coming soon | Coming soon |
| SWE-bench Pro | 65.1% | 56.3% | Ornith-1.5-397B |
| 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 |

### Reasoning

- Winner: Not comparable
- Ornith-1.5-397B public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 73 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Not comparable
- Ornith-1.5-397B public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 72 (Unranked · 3 rankable rows)

| Benchmark | Ornith-1.5-397B | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| SimpleVQA | Coming soon | 79.2% | Coming soon |
| V* | Coming soon | 95.3% | Coming soon |

### Knowledge

- Winner: Directional only
- Ornith-1.5-397B public-lane score: 63.3 (Estimated · #36/171)
- Step 3.7 Flash public-lane score: 43.9 (Estimated · #85/171)

| Benchmark | Ornith-1.5-397B | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.8% | Coming soon | Coming soon |
| GPQA-D | 92.8% | Coming soon | Coming soon |
| HLE | 44.6% | Coming soon | Coming soon |
| HLE w/o tools | 44.6% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- Ornith-1.5-397B public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 80.6 (#53/125)

## FAQ

### Which is better overall, Ornith-1.5-397B or Step 3.7 Flash?

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

### Where is the biggest gap between Ornith-1.5-397B and Step 3.7 Flash?

The widest category gap is in coding, where the averages are 54.7 for Ornith-1.5-397B and 32.7 for Step 3.7 Flash.

### 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 Step 3.7 Flash cover on BenchLM?

Step 3.7 Flash currently has 11 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)
- [Step 3.7 Flash vs Ornith-1.5-35B-A3B](/compare/ornith-1-5-35b-a3b-vs-step-3-7-flash)
- [Ornith-1.5-397B vs Ornith-1.5-9B](/compare/ornith-1-5-397b-vs-ornith-1-5-9b)
- [Step 3.7 Flash vs Ornith-1.5-9B](/compare/ornith-1-5-9b-vs-step-3-7-flash)

## Explore More

- [Ornith-1.5-397B profile](/models/ornith-1-5-397b)
- [Step 3.7 Flash profile](/models/step-3-7-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)