# GLM-5.3-Flash vs Ornith-1.5-397B

> Side-by-side benchmark comparison for GLM-5.3-Flash and Ornith-1.5-397B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/glm-5-3-flash-vs-ornith-1-5-397b
- Last updated: October 10, 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 62.52 to 57.36. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in coding, where the averages are 49.3 for GLM-5.3-Flash and 54.3 for Ornith-1.5-397B.
- The biggest single benchmark swing is DeepSWE in Coding, with scores of 63.4% and 56.0%.
- GLM-5.3-Flash also has the larger context window at 1M.

## Model Snapshot

| Property | GLM-5.3-Flash | Ornith-1.5-397B |
|----------|----------|----------|
| Creator | Z.AI | Ornith AI |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 262K |
| Overall Score | 57.36 | 62.52 |
| Benchmarks Covered | 21 | 18 |
| Pricing (input/output) | $0.00 / $0.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- GLM-5.3-Flash public-lane score: 55.7 (Supported · #34/123)
- Ornith-1.5-397B public-lane score: 57.5 (Estimated · #31/123)

| Benchmark | GLM-5.3-Flash | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 84.3% | 86.1% | Ornith-1.5-397B |
| Toolathlon-Verified | 78.4% | 71.2% | GLM-5.3-Flash |
| AutomationBench | 48.8% | Coming soon | Coming soon |
| Agents' Last Exam | 26.3% | Coming soon | Coming soon |
| HLE w/ tools | 55.3% | 56.1% | Ornith-1.5-397B |
| Terminal-Bench 2.1 (Vals) | 62.9% | Coming soon | Coming soon |
| MCP Atlas | Coming soon | 80% | Coming soon |
| WideResearch | Coming soon | 80.8% | Coming soon |
| BrowseComp | Coming soon | 86.6% | Coming soon |
| Claw-Eval | Coming soon | 81.4% | Coming soon |

### Coding

- Winner: Directional only
- GLM-5.3-Flash public-lane score: 49.3 (Supported · #42/146)
- Ornith-1.5-397B public-lane score: 54.3 (Estimated · #32/146)

| Benchmark | GLM-5.3-Flash | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 84.3% | 86.1% | Ornith-1.5-397B |
| DeepSWE | 63.4% | 56.0% | GLM-5.3-Flash |
| NL2Repo | 56.3% | 59.5% | Ornith-1.5-397B |
| LiveCodeBench (Vals) | 80.5% | Coming soon | Coming soon |
| SWE-bench (Vals) | 92.0% | Coming soon | Coming soon |
| OpenHarmony Bench | 57.3% | Coming soon | Coming soon |
| FrontierSWE v2 | 18.1% | Coming soon | Coming soon |
| Bug Hunt Bench | 17.7 fixes | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 86% | Coming soon |
| SWE-bench Pro | Coming soon | 65.1% | Coming soon |
| SWE Multilingual | Coming soon | 79.6% | Coming soon |
| frontierBench | Coming soon | 13.5% | Coming soon |

### Reasoning

- Winner: Not comparable
- GLM-5.3-Flash public-lane score: 81.1 (#11/28)
- Ornith-1.5-397B public-lane score: Coming soon

### Multimodal & Grounded

- Winner: Not comparable
- GLM-5.3-Flash public-lane score: 84 (#14/54)
- Ornith-1.5-397B public-lane score: Coming soon

| Benchmark | GLM-5.3-Flash | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | 62.4% | Coming soon | Coming soon |
| CharXiv | 89.4% | Coming soon | Coming soon |
| Chartography (tools) | 78.0% | Coming soon | Coming soon |
| BabyVision | 53.4% | Coming soon | Coming soon |
| MMVU | 80.5% | Coming soon | Coming soon |

### Knowledge

- Winner: Directional only
- GLM-5.3-Flash public-lane score: 60.5 (Supported · #43/177)
- Ornith-1.5-397B public-lane score: 64.8 (Estimated · #34/177)

| Benchmark | GLM-5.3-Flash | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 86.4% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.1% | Coming soon | Coming soon |
| GPQA | Coming soon | 92.8% | Coming soon |
| GPQA-D | Coming soon | 92.8% | Coming soon |
| HLE | Coming soon | 44.6% | Coming soon |
| HLE w/o tools | Coming soon | 44.6% | Coming soon |

## FAQ

### Which is better overall, GLM-5.3-Flash 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 GLM-5.3-Flash and Ornith-1.5-397B?

The widest category gap is in coding, where the averages are 49.3 for GLM-5.3-Flash and 54.3 for Ornith-1.5-397B.

### How many benchmarks does GLM-5.3-Flash cover on BenchLM?

GLM-5.3-Flash currently has 21 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

- [GLM-5.3-Flash vs GLM-5.3](/compare/glm-5-3-vs-glm-5-3-flash)
- [Ornith-1.5-397B vs GLM-5.3](/compare/glm-5-3-vs-ornith-1-5-397b)
- [GLM-5.3-Flash vs GLM-5.2](/compare/glm-5-2-vs-glm-5-3-flash)
- [Ornith-1.5-397B vs GLM-5.2](/compare/glm-5-2-vs-ornith-1-5-397b)

## Explore More

- [GLM-5.3-Flash profile](/models/glm-5-3-flash)
- [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)