# GLM-5.1 vs Grok 4.3

> Side-by-side benchmark comparison for GLM-5.1 and Grok 4.3 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/glm-5-1-vs-grok-4-3
- Last updated: September 10, 2026

- Shared sourced benchmarks: 7
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick GLM-5.1 if you want the stronger benchmark profile. Grok 4.3 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 63.24 to 59.73.
- The clearest category separation is in agentic, where the averages are 54.3 for GLM-5.1 and 26.9 for Grok 4.3.
- The biggest single benchmark swing is Gert Labs in Agentic, with scores of 60.11% and 43.86%.
- Grok 4.3 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Grok 4.3 also has the larger context window at 1M.

## Model Snapshot

| Property | GLM-5.1 | Grok 4.3 |
|----------|----------|----------|
| Creator | Z.AI | xAI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 203K | 1M |
| Overall Score | 63.24 | 59.73 |
| Benchmarks Covered | 26 | 7 |
| Pricing (input/output) | $1.40 / $4.40 | $1.25 / $2.50 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- GLM-5.1 public-lane score: 54.3 (Estimated · #37/152)
- Grok 4.3 public-lane score: 26.9 (Supported · #144/152)

| Benchmark | GLM-5.1 | Grok 4.3 | 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% | 43.86% | GLM-5.1 |
| ResearchClawBench | 18.2% | 12.4% | GLM-5.1 |
| Terminal-Bench 2.1 (Vals) | 56.9% | 41.9% | GLM-5.1 |

### Coding

- Winner: GLM-5.1
- GLM-5.1 public-lane score: 56.4 (Supported · #38/151)
- Grok 4.3 public-lane score: 33.6 (Supported · #131/151)

| Benchmark | GLM-5.1 | Grok 4.3 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 58.4% | Coming soon | Coming soon |
| 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% | 84.5% | Grok 4.3 |
| SWE-bench (Vals) | 76.4% | 71.4% | GLM-5.1 |

### Multimodal & Grounded

- Winner: Coming soon
- GLM-5.1 public-lane score: Coming soon
- Grok 4.3 public-lane score: 65.6 (#25/48)

### Reasoning

- Winner: Coming soon
- GLM-5.1 public-lane score: 71.7 (Unranked · 2 rankable rows)
- Grok 4.3 public-lane score: 65.2 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Grok 4.3
- GLM-5.1 public-lane score: 54.8 (Supported · #54/183)
- Grok 4.3 public-lane score: 57 (Supported · #44/183)

| Benchmark | GLM-5.1 | Grok 4.3 | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 86.2% | Coming soon | Coming soon |
| HLE | 52.3% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 84.5% | 91.4% | Grok 4.3 |
| MMLU-Pro (Vals) | 86.9% | 85.8% | GLM-5.1 |

### Instruction Following

- Winner: Coming soon
- GLM-5.1 public-lane score: 93.7 (#5/123)
- Grok 4.3 public-lane score: 94.4 (#2/123)

### Mathematics

- Winner: Coming soon
- GLM-5.1 public-lane score: 64.1 (#3/7)
- Grok 4.3 public-lane score: Coming soon

| Benchmark | GLM-5.1 | Grok 4.3 | 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 Grok 4.3?

GLM-5.1 is ahead overall on BenchLM right now.

### Where is the biggest gap between GLM-5.1 and Grok 4.3?

The widest category gap is in agentic, where the averages are 54.3 for GLM-5.1 and 26.9 for Grok 4.3.

### 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 Grok 4.3 cover on BenchLM?

Grok 4.3 currently has 7 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GLM-5.1 vs GLM-5.3](/compare/glm-5-1-vs-glm-5-3)
- [Grok 4.3 vs GLM-5.3](/compare/glm-5-3-vs-grok-4-3)
- [GLM-5.1 vs GLM-5.2](/compare/glm-5-1-vs-glm-5-2)
- [Grok 4.3 vs GLM-5.2](/compare/glm-5-2-vs-grok-4-3)

## Explore More

- [GLM-5.1 profile](/models/glm-5-1)
- [Grok 4.3 profile](/models/grok-4-3)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)