# GLM-5.1 vs Qwen3.5 397B

> Side-by-side benchmark comparison for GLM-5.1 and Qwen3.5 397B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/glm-5-1-vs-qwen3-5-397b
- Last updated: September 23, 2026

- Shared sourced benchmarks: 13
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.6

## Quick Verdict

Pick GLM-5.1 if you want the stronger benchmark profile. Qwen3.5 397B only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- GLM-5.1 leads overall 57.71 to 50.
- The clearest category separation is in instruction following, where the averages are 92.4 for GLM-5.1 and 0 for Qwen3.5 397B.
- The biggest single benchmark swing is MCP Atlas in Agentic, with scores of 71.8% and 46.1%.
- Qwen3.5 397B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GLM-5.1 also has the larger context window at 203K.

## Model Snapshot

| Property | GLM-5.1 | Qwen3.5 397B |
|----------|----------|----------|
| Creator | Z.AI | Alibaba |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 203K | 128K |
| Overall Score | 57.71 | null |
| Benchmarks Covered | 26 | 38 |
| Pricing (input/output) | $1.40 / $4.40 | $0.60 / $3.60 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- GLM-5.1 public-lane score: 42.1 (Estimated · #43/105)
- Qwen3.5 397B public-lane score: Coming soon

| Benchmark | GLM-5.1 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 63.5% | 52.5% | GLM-5.1 |
| BrowseComp | 68% | 62% | GLM-5.1 |
| τ³-bench results | 70.6% | 68.4% | GLM-5.1 |
| MCP Atlas | 71.8% | 46.1% | GLM-5.1 |
| CyberGym | 68.7% | Coming soon | Coming soon |
| Claw-Eval | 62.3% | 56.8% | GLM-5.1 |
| Gert Labs | 60.11% | 46.76% | GLM-5.1 |
| ResearchClawBench | 18.2% | 14.2% | GLM-5.1 |
| Terminal-Bench 2.1 (Vals) | 56.9% | Coming soon | Coming soon |
| QwenClawBench | Coming soon | 51.8% | Coming soon |
| VITA-Bench | Coming soon | 43.7% | Coming soon |
| DeepPlanning | Coming soon | 37.6% | Coming soon |
| Toolathlon | Coming soon | 36.3% | Coming soon |
| MCP-Tasks | Coming soon | 74.2% | Coming soon |
| WideResearch | Coming soon | 74.0% | Coming soon |

### Coding

- Winner: Not comparable
- GLM-5.1 public-lane score: 51.5 (Supported · #36/135)
- Qwen3.5 397B public-lane score: Coming soon

| Benchmark | GLM-5.1 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 58.4% | 50.9% | GLM-5.1 |
| NL2Repo | 42.7% | Coming soon | Coming soon |
| 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 |
| SWE-bench Verified | Coming soon | 76.2% | Coming soon |
| LiveCodeBench v6 | Coming soon | 83.6% | Coming soon |

### Reasoning

- Winner: Not comparable
- GLM-5.1 public-lane score: 71.7 (Unranked · 2 rankable rows)
- Qwen3.5 397B public-lane score: 59.8 (Unranked · 2 rankable rows)

| Benchmark | GLM-5.1 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | Coming soon | 63.2% | Coming soon |
| AI-Needle | Coming soon | 68.7% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- GLM-5.1 public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 62.9 (#28/50)

| Benchmark | GLM-5.1 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 79% | Coming soon |
| MathVision | Coming soon | 88.6% | Coming soon |
| CharXiv | Coming soon | 80.8% | Coming soon |
| VideoMMMU | Coming soon | 84.7% | Coming soon |
| ScreenSpot Pro | Coming soon | 65.6% | Coming soon |
| V* | Coming soon | 95.8% | Coming soon |

### Knowledge

- Winner: Not comparable
- GLM-5.1 public-lane score: 50.2 (Supported · #54/160)
- Qwen3.5 397B public-lane score: Coming soon

| Benchmark | GLM-5.1 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 86.2% | Coming soon | Coming soon |
| HLE | 52.3% | 28.7% | GLM-5.1 |
| GPQA Diamond (Vals) | 84.5% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.9% | Coming soon | Coming soon |
| GPQA | Coming soon | 88.4% | Coming soon |
| SuperGPQA | Coming soon | 70.4% | Coming soon |
| MMLU-Pro | Coming soon | 87.8% | Coming soon |
| MMLU-Redux | Coming soon | 94.9% | Coming soon |
| C-Eval | Coming soon | 93% | Coming soon |

### Multilingual

- Winner: Not comparable
- GLM-5.1 public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 69.7 (#5/12)

| Benchmark | GLM-5.1 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 84.7% | Coming soon |
| NOVA-63 | Coming soon | 59.1% | Coming soon |

### Instruction Following

- Winner: Directional only
- GLM-5.1 public-lane score: 92.4 (#4/124)
- Qwen3.5 397B public-lane score: 0 (#124/124)

| Benchmark | GLM-5.1 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 92.6% | Coming soon |

### Mathematics

- Winner: Not comparable
- GLM-5.1 public-lane score: 63.8 (#3/7)
- Qwen3.5 397B public-lane score: 73.5 (Unranked · 5 rankable rows)

| Benchmark | GLM-5.1 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 95.3% | 93.3% | GLM-5.1 |
| HMMT Nov 2025 | 94.0% | 92.7% | GLM-5.1 |
| HMMT Feb 2026 | 82.6% | 87.9% | Qwen3.5 397B |
| MMAnswerBench | 83.8% | 80.9% | GLM-5.1 |
| FrontierMath v2 (Tiers 1-3) | 33.448% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 12.500% | Coming soon | Coming soon |
| HMMT Feb 2025 | Coming soon | 94.8% | Coming soon |

## FAQ

### Which is better overall, GLM-5.1 or Qwen3.5 397B?

GLM-5.1 is ahead overall on BenchLM right now.

### Where is the biggest gap between GLM-5.1 and Qwen3.5 397B?

The widest category gap is in instruction following, where the averages are 92.4 for GLM-5.1 and 0 for Qwen3.5 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 Qwen3.5 397B cover on BenchLM?

Qwen3.5 397B currently has 38 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GLM-5.1 vs GLM-5.3](/compare/glm-5-1-vs-glm-5-3)
- [Qwen3.5 397B vs GLM-5.3](/compare/glm-5-3-vs-qwen3-5-397b)
- [GLM-5.1 vs GLM-5.2](/compare/glm-5-1-vs-glm-5-2)
- [Qwen3.5 397B vs GLM-5.2](/compare/glm-5-2-vs-qwen3-5-397b)

## Explore More

- [GLM-5.1 profile](/models/glm-5-1)
- [Qwen3.5 397B profile](/models/qwen3-5-397b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)