# GLM-5.2 vs Ornith-1.5-397B

> Side-by-side benchmark comparison for GLM-5.2 and Ornith-1.5-397B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

- Shared sourced benchmarks: 9
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

GLM-5.2 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- GLM-5.2 has the higher overall point estimate 63.16 to 62.72. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in knowledge, where the averages are 57.3 for GLM-5.2 and 63.3 for Ornith-1.5-397B.
- The biggest single benchmark swing is NL2Repo in Coding, with scores of 48.9% 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.
- GLM-5.2 also has the larger context window at 1M.

## Model Snapshot

| Property | GLM-5.2 | Ornith-1.5-397B |
|----------|----------|----------|
| Creator | Z.AI | Ornith AI |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 262K |
| Overall Score | 63.16 | 62.72 |
| Benchmarks Covered | 26 | 18 |
| Pricing (input/output) | $1.40 / $4.40 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- GLM-5.2 public-lane score: 56.4 (Supported · #31/119)
- Ornith-1.5-397B public-lane score: 56.8 (Estimated · #29/119)

| Benchmark | GLM-5.2 | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 4.6% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 81.0% | 86.1% | Ornith-1.5-397B |
| MCP Atlas | 76.8% | 80% | Ornith-1.5-397B |
| Toolathlon | 48.2% | Coming soon | Coming soon |
| ResearchClawBench | 20.7% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 67.8% | 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 |
| BrowseComp | Coming soon | 86.6% | Coming soon |
| Claw-Eval | Coming soon | 81.4% | Coming soon |

### Coding

- Winner: Directional only
- GLM-5.2 public-lane score: 56.2 (Supported · #28/144)
- Ornith-1.5-397B public-lane score: 54.7 (Estimated · #34/144)

| Benchmark | GLM-5.2 | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 62.1% | 65.1% | Ornith-1.5-397B |
| NL2Repo | 48.9% | 59.5% | Ornith-1.5-397B |
| Terminal-Bench 2.1 | 81.0% | 86.1% | Ornith-1.5-397B |
| ProgramBench | 63.7% | Coming soon | Coming soon |
| CursorBench 3.2 | 55.0% | Coming soon | Coming soon |
| OpenHarmony Bench | 58.4% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 69.5% | Coming soon | Coming soon |
| SWE-bench (Vals) | 82.8% | Coming soon | Coming soon |
| PostTrainBench v1.1 | 31.7% | Coming soon | 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-5.2 public-lane score: 76.1 (Unranked · 2 rankable rows)
- Ornith-1.5-397B public-lane score: Coming soon

| Benchmark | GLM-5.2 | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| CritPt | 20.9% | Coming soon | Coming soon |

### Knowledge

- Winner: Directional only
- GLM-5.2 public-lane score: 57.3 (Supported · #48/171)
- Ornith-1.5-397B public-lane score: 63.3 (Estimated · #36/171)

| Benchmark | GLM-5.2 | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 91.2% | 92.8% | Ornith-1.5-397B |
| GPQA-D | 91.2% | 92.8% | Ornith-1.5-397B |
| HLE | 54.7% | 44.6% | GLM-5.2 |
| HLE w/o tools | 40.5% | 44.6% | Ornith-1.5-397B |
| GPQA Diamond (Vals) | 85.6% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.7% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- GLM-5.2 public-lane score: 88.5 (#22/125)
- Ornith-1.5-397B public-lane score: Coming soon

### Mathematics

- Winner: Not comparable
- GLM-5.2 public-lane score: 80.7 (Unranked · 4 rankable rows)
- Ornith-1.5-397B public-lane score: Coming soon

| Benchmark | GLM-5.2 | Ornith-1.5-397B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 99.2% | Coming soon | Coming soon |
| HMMT Nov 2025 | 94.4% | Coming soon | Coming soon |
| HMMT Feb 2026 | 92.5% | Coming soon | Coming soon |
| MMAnswerBench | 91.0% | Coming soon | Coming soon |

## FAQ

### Which is better overall, GLM-5.2 or Ornith-1.5-397B?

GLM-5.2 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between GLM-5.2 and Ornith-1.5-397B?

The widest category gap is in knowledge, where the averages are 57.3 for GLM-5.2 and 63.3 for Ornith-1.5-397B.

### How many benchmarks does GLM-5.2 cover on BenchLM?

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

## Explore More

- [GLM-5.2 profile](/models/glm-5-2)
- [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)