# GLM-5.1 vs Ornith-1.5-397B

> Side-by-side benchmark comparison for GLM-5.1 and Ornith-1.5-397B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

- Shared sourced benchmarks: 7
- 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 57.76. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in agentic, where the averages are 42.3 for GLM-5.1 and 56.8 for Ornith-1.5-397B.
- The biggest single benchmark swing is Claw-Eval in Agentic, with scores of 62.3% and 81.4%.
- 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 | GLM-5.1 | Ornith-1.5-397B |
|----------|----------|----------|
| Creator | Z.AI | Ornith AI |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 203K | 262K |
| Overall Score | 57.76 | 62.72 |
| Benchmarks Covered | 26 | 18 |
| Pricing (input/output) | $1.40 / $4.40 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- GLM-5.1 public-lane score: 42.3 (Estimated · #56/119)
- Ornith-1.5-397B public-lane score: 56.8 (Estimated · #29/119)

| Benchmark | GLM-5.1 | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 63.5% | Coming soon | Coming soon |
| BrowseComp | 68% | 86.6% | Ornith-1.5-397B |
| τ³-bench results | 70.6% | Coming soon | Coming soon |
| MCP Atlas | 71.8% | 80% | Ornith-1.5-397B |
| CyberGym | 68.7% | Coming soon | Coming soon |
| Claw-Eval | 62.3% | 81.4% | Ornith-1.5-397B |
| Gert Labs | 60.11% | Coming soon | Coming soon |
| ResearchClawBench | 18.2% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 56.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 86.1% | 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 |

### Coding

- Winner: Directional only
- GLM-5.1 public-lane score: 50.7 (Supported · #42/144)
- Ornith-1.5-397B public-lane score: 54.7 (Estimated · #34/144)

| Benchmark | GLM-5.1 | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 58.4% | 65.1% | Ornith-1.5-397B |
| NL2Repo | 42.7% | 59.5% | Ornith-1.5-397B |
| SWE-Rebench | 62.7% | Coming soon | Coming soon |
| Vibe Code Bench | 31.46% | Coming soon | Coming soon |
| OpenHarmony Bench | 52.3% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 81.4% | Coming soon | Coming soon |
| SWE-bench (Vals) | 76.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 86.1% | Coming soon |
| SWE-bench Verified | Coming soon | 86% | Coming soon |
| SWE Multilingual | Coming soon | 79.6% | Coming soon |
| DeepSWE | Coming soon | 56.0% | Coming soon |
| frontierBench | Coming soon | 13.5% | Coming soon |

### Reasoning

- Winner: Not comparable
- GLM-5.1 public-lane score: 73 (Unranked · 2 rankable rows)
- Ornith-1.5-397B public-lane score: Coming soon

### Knowledge

- Winner: Directional only
- GLM-5.1 public-lane score: 52.5 (Supported · #60/171)
- Ornith-1.5-397B public-lane score: 63.3 (Estimated · #36/171)

| Benchmark | GLM-5.1 | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 86.2% | 92.8% | Ornith-1.5-397B |
| HLE | 52.3% | 44.6% | GLM-5.1 |
| GPQA Diamond (Vals) | 84.5% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.9% | Coming soon | Coming soon |
| GPQA | Coming soon | 92.8% | Coming soon |
| HLE w/o tools | Coming soon | 44.6% | Coming soon |

### Instruction Following

- Winner: Not comparable
- GLM-5.1 public-lane score: 92.4 (#4/125)
- Ornith-1.5-397B public-lane score: Coming soon

### Mathematics

- Winner: Not comparable
- GLM-5.1 public-lane score: 63.8 (#3/7)
- Ornith-1.5-397B public-lane score: Coming soon

| Benchmark | GLM-5.1 | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 95.3% | Coming soon | Coming soon |
| HMMT Nov 2025 | 94.0% | Coming soon | Coming soon |
| HMMT Feb 2026 | 82.6% | Coming soon | Coming soon |
| MMAnswerBench | 83.8% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 33.448% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 12.500% | Coming soon | Coming soon |

## FAQ

### Which is better overall, GLM-5.1 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-5.1 and Ornith-1.5-397B?

The widest category gap is in agentic, where the averages are 42.3 for GLM-5.1 and 56.8 for Ornith-1.5-397B.

### How many benchmarks does GLM-5.1 cover on BenchLM?

GLM-5.1 currently has 26 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-5.1 vs GLM-5.3](/compare/glm-5-1-vs-glm-5-3)
- [Ornith-1.5-397B vs GLM-5.3](/compare/glm-5-3-vs-ornith-1-5-397b)
- [GLM-5.1 vs GLM-5.2](/compare/glm-5-1-vs-glm-5-2)
- [Ornith-1.5-397B vs GLM-5.2](/compare/glm-5-2-vs-ornith-1-5-397b)

## Explore More

- [GLM-5.1 profile](/models/glm-5-1)
- [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)