# Claude Sonnet 4.6 vs GLM-5.1

> Side-by-side benchmark comparison for Claude Sonnet 4.6 and GLM-5.1 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-sonnet-4-6-vs-glm-5-1
- Last updated: September 23, 2026

- Shared sourced benchmarks: 14
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.6

## Quick Verdict

Pick GLM-5.1 if you want the stronger benchmark profile. Claude Sonnet 4.6 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 56.73.
- The clearest category separation is in instruction following, where the averages are 46.6 for Claude Sonnet 4.6 and 92.4 for GLM-5.1.
- The biggest single benchmark swing is Vibe Code Bench in Coding, with scores of 51.48% and 31.46%.
- GLM-5.1 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 | Claude Sonnet 4.6 | GLM-5.1 |
|----------|----------|----------|
| Creator | Anthropic | Z.AI |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 203K |
| Overall Score | 56.73 | 57.71 |
| Benchmarks Covered | 26 | 26 |
| Pricing (input/output) | $3.00 / $15.00 | $1.40 / $4.40 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Claude Sonnet 4.6 public-lane score: 41 (Supported · #44/105)
- GLM-5.1 public-lane score: 42.1 (Estimated · #43/105)

| Benchmark | Claude Sonnet 4.6 | GLM-5.1 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 59.1% | 63.5% | GLM-5.1 |
| OSWorld-Verified | 72.1% | Coming soon | Coming soon |
| Claw-Eval | 67.8% | 62.3% | Claude Sonnet 4.6 |
| CyberGym | 65.2% | 68.7% | GLM-5.1 |
| Gert Labs | 62.92% | 60.11% | Claude Sonnet 4.6 |
| OSWorld 2.0 | 8.3% | Coming soon | Coming soon |
| JobBench | 36.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 57.3% | 56.9% | Claude Sonnet 4.6 |
| ApprenticeBench | 2% | Coming soon | Coming soon |
| BrowseComp | Coming soon | 68% | Coming soon |
| τ³-bench results | Coming soon | 70.6% | Coming soon |
| MCP Atlas | Coming soon | 71.8% | Coming soon |
| ResearchClawBench | Coming soon | 18.2% | Coming soon |

### Coding

- Winner: GLM-5.1
- Claude Sonnet 4.6 public-lane score: 48.5 (Supported · #41/135)
- GLM-5.1 public-lane score: 51.5 (Supported · #36/135)

| Benchmark | Claude Sonnet 4.6 | GLM-5.1 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 79.6% | Coming soon | Coming soon |
| SWE-Rebench | 60.7% | 62.7% | GLM-5.1 |
| React Native Evals | 80.6% | Coming soon | Coming soon |
| Vibe Code Bench | 51.48% | 31.46% | Claude Sonnet 4.6 |
| cursorBench31 | 48.8% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 24.3% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 82.1% | 81.4% | Claude Sonnet 4.6 |
| SWE-bench (Vals) | 77.4% | 76.4% | Claude Sonnet 4.6 |
| SWE-bench Pro | Coming soon | 58.4% | Coming soon |
| NL2Repo | Coming soon | 42.7% | Coming soon |
| OpenHarmony Bench | Coming soon | 52.3% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 67.9 (Unranked · 2 rankable rows)
- GLM-5.1 public-lane score: 71.7 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 54.1 (#35/50)
- GLM-5.1 public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.6 | GLM-5.1 | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 77.4% | Coming soon | Coming soon |

### Knowledge

- Winner: Claude Sonnet 4.6
- Claude Sonnet 4.6 public-lane score: 50.8 (Supported · #52/160)
- GLM-5.1 public-lane score: 50.2 (Supported · #54/160)

| Benchmark | Claude Sonnet 4.6 | GLM-5.1 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 89.9% | Coming soon | Coming soon |
| SuperGPQA | 95% | Coming soon | Coming soon |
| MMLU-Pro | 79.2% | Coming soon | Coming soon |
| HLE | 49% | 52.3% | GLM-5.1 |
| GPQA Diamond (Vals) | 85.6% | 84.5% | Claude Sonnet 4.6 |
| MMLU-Pro (Vals) | 87.3% | 86.9% | Claude Sonnet 4.6 |
| GPQA-D | Coming soon | 86.2% | Coming soon |

### Instruction Following

- Winner: Directional only
- Claude Sonnet 4.6 public-lane score: 46.6 (#88/124)
- GLM-5.1 public-lane score: 92.4 (#4/124)

### Mathematics

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 48.8 (Unranked · 2 rankable rows)
- GLM-5.1 public-lane score: 63.8 (#3/7)

| Benchmark | Claude Sonnet 4.6 | GLM-5.1 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 32.400% | 33.448% | GLM-5.1 |
| FrontierMath v2 (Tier 4) | 8.300% | 12.500% | GLM-5.1 |
| AIME26 | Coming soon | 95.3% | Coming soon |
| HMMT Nov 2025 | Coming soon | 94.0% | Coming soon |
| HMMT Feb 2026 | Coming soon | 82.6% | Coming soon |
| MMAnswerBench | Coming soon | 83.8% | Coming soon |

## FAQ

### Which is better overall, Claude Sonnet 4.6 or GLM-5.1?

GLM-5.1 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Sonnet 4.6 and GLM-5.1?

The widest category gap is in instruction following, where the averages are 46.6 for Claude Sonnet 4.6 and 92.4 for GLM-5.1.

### How many benchmarks does Claude Sonnet 4.6 cover on BenchLM?

Claude Sonnet 4.6 currently has 26 sourced benchmark scores on BenchLM.

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

GLM-5.1 currently has 26 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Sonnet 4.6 vs GLM-5.3](/compare/claude-sonnet-4-6-vs-glm-5-3)
- [GLM-5.1 vs GLM-5.3](/compare/glm-5-1-vs-glm-5-3)
- [Claude Sonnet 4.6 vs GLM-5.2](/compare/claude-sonnet-4-6-vs-glm-5-2)
- [GLM-5.1 vs GLM-5.2](/compare/glm-5-1-vs-glm-5-2)

## Explore More

- [Claude Sonnet 4.6 profile](/models/claude-sonnet-4-6)
- [GLM-5.1 profile](/models/glm-5-1)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)