# GLM-5.1 vs Qwen3.8-Flash-Next

> Side-by-side benchmark comparison for GLM-5.1 and Qwen3.8-Flash-Next across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/glm-5-1-vs-qwen3-8-flash-next
- Last updated: October 10, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Qwen3.8-Flash-Next leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Qwen3.8-Flash-Next has the higher overall point estimate 64.23 to 56.48. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in agentic, where the averages are 43.2 for GLM-5.1 and 59.5 for Qwen3.8-Flash-Next.
- The biggest single benchmark swing is GPQA-D in Knowledge, with scores of 86.2% and 91.7%.
- Qwen3.8-Flash-Next is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Qwen3.8-Flash-Next also has the larger context window at 262K.

## Model Snapshot

| Property | GLM-5.1 | Qwen3.8-Flash-Next |
|----------|----------|----------|
| Creator | Z.AI | Alibaba |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 203K | 262K |
| Overall Score | 56.48 | 64.23 |
| Benchmarks Covered | 28 | 24 |
| Pricing (input/output) | $1.40 / $4.40 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- GLM-5.1 public-lane score: 43.2 (Estimated · #59/123)
- Qwen3.8-Flash-Next public-lane score: 59.5 (Estimated · #24/123)

| Benchmark | GLM-5.1 | Qwen3.8-Flash-Next | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 63.5% | Coming soon | Coming soon |
| BrowseComp | 68% | Coming soon | Coming soon |
| τ³-bench results | 70.6% | Coming soon | Coming soon |
| MCP Atlas | 71.8% | Coming soon | Coming soon |
| CyberGym | 68.7% | Coming soon | Coming soon |
| Claw-Eval | 62.3% | Coming soon | Coming soon |
| 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 |
| HLE w/ tools | 52.3% | Coming soon | Coming soon |
| CoWorkBench | Coming soon | 73.9% | Coming soon |
| JobBench | Coming soon | 55.7% | Coming soon |
| Agents' Last Exam | Coming soon | 51.2% | Coming soon |
| Toolathlon-Verified | Coming soon | 73.5% | Coming soon |
| AndroidWorld | Coming soon | 84.5% | Coming soon |
| OSWorld 2.0 | Coming soon | 19.4% | Coming soon |

### Coding

- Winner: Qwen3.8-Flash-Next
- GLM-5.1 public-lane score: 48.3 (Supported · #44/146)
- Qwen3.8-Flash-Next public-lane score: 52.4 (Supported · #37/146)

| Benchmark | GLM-5.1 | Qwen3.8-Flash-Next | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 58.4% | 62.5% | Qwen3.8-Flash-Next |
| NL2Repo | 42.7% | 48.1% | Qwen3.8-Flash-Next |
| SWE-Rebench | 62.7% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 63.5% | 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 Multilingual | Coming soon | 81% | Coming soon |
| DeepSWE | Coming soon | 58.7% | Coming soon |
| LiveCodeBench v6 | Coming soon | 91.9% | Coming soon |

### Reasoning

- Winner: Not comparable
- GLM-5.1 public-lane score: 76.7 (Unranked · 2 rankable rows)
- Qwen3.8-Flash-Next public-lane score: 80.9 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Not comparable
- GLM-5.1 public-lane score: Coming soon
- Qwen3.8-Flash-Next public-lane score: 87.7 (#8/54)

| Benchmark | GLM-5.1 | Qwen3.8-Flash-Next | Winner |
|-----------|-----------|-----------|--------|
| Vision2Web | Coming soon | 64.0% | Coming soon |
| ERQA | Coming soon | 72.3% | Coming soon |
| LVBench | Coming soon | 76.6% | Coming soon |
| RealWorldQA | Coming soon | 88.5% | Coming soon |
| MathVision | Coming soon | 90.6% | Coming soon |
| MathVision w/ Python | Coming soon | 95.7% | Coming soon |
| CharXiv w/o tools | Coming soon | 84.6% | Coming soon |
| CharXiv | Coming soon | 90.6% | Coming soon |

### Knowledge

- Winner: Qwen3.8-Flash-Next
- GLM-5.1 public-lane score: 53.5 (Supported · #65/177)
- Qwen3.8-Flash-Next public-lane score: 59.4 (Supported · #47/177)

| Benchmark | GLM-5.1 | Qwen3.8-Flash-Next | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 86.2% | 91.7% | Qwen3.8-Flash-Next |
| HLE | 31% | 35.9% | Qwen3.8-Flash-Next |
| GPQA Diamond (Vals) | 84.5% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.9% | Coming soon | Coming soon |
| GPQA | Coming soon | 91.7% | Coming soon |
| HLE w/o tools | Coming soon | 35.9% | Coming soon |

### Instruction Following

- Winner: Directional only
- GLM-5.1 public-lane score: 93.8 (#6/127)
- Qwen3.8-Flash-Next public-lane score: 91.2 (#22/127)

| Benchmark | GLM-5.1 | Qwen3.8-Flash-Next | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 81.3% | Coming soon |

### Mathematics

- Winner: Not comparable
- GLM-5.1 public-lane score: 64.9 (#3/7)
- Qwen3.8-Flash-Next public-lane score: Coming soon

| Benchmark | GLM-5.1 | Qwen3.8-Flash-Next | 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 Qwen3.8-Flash-Next?

Qwen3.8-Flash-Next has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between GLM-5.1 and Qwen3.8-Flash-Next?

The widest category gap is in agentic, where the averages are 43.2 for GLM-5.1 and 59.5 for Qwen3.8-Flash-Next.

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

GLM-5.1 currently has 28 sourced benchmark scores on BenchLM.

### How many benchmarks does Qwen3.8-Flash-Next cover on BenchLM?

Qwen3.8-Flash-Next currently has 24 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GLM-5.1 vs GLM-5.3](/compare/glm-5-1-vs-glm-5-3)
- [Qwen3.8-Flash-Next vs GLM-5.3](/compare/glm-5-3-vs-qwen3-8-flash-next)
- [GLM-5.1 vs GLM-5.2](/compare/glm-5-1-vs-glm-5-2)
- [Qwen3.8-Flash-Next vs GLM-5.2](/compare/glm-5-2-vs-qwen3-8-flash-next)

## Explore More

- [GLM-5.1 profile](/models/glm-5-1)
- [Qwen3.8-Flash-Next profile](/models/qwen3-8-flash-next)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)