# GLM-5.1 vs Grok 4.5

> Side-by-side benchmark comparison for GLM-5.1 and Grok 4.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/glm-5-1-vs-grok-4-5
- Last updated: October 7, 2026

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Grok 4.5 if you want the stronger benchmark profile. GLM-5.1 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Grok 4.5 leads overall 63.97 to 56.13.
- The clearest category separation is in reasoning, where the averages are 73 for GLM-5.1 and 50.4 for Grok 4.5.
- The biggest single benchmark swing is Terminal-Bench 2.1 (Vals) in Agentic, with scores of 56.9% and 67.8%.
- GLM-5.1 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Grok 4.5 also has the larger context window at 500K.

## Model Snapshot

| Property | GLM-5.1 | Grok 4.5 |
|----------|----------|----------|
| Creator | Z.AI | xAI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 203K | 500K |
| Overall Score | 56.13 | 63.97 |
| Benchmarks Covered | 26 | 17 |
| Pricing (input/output) | $1.40 / $4.40 | $2.00 / $6.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- GLM-5.1 public-lane score: 43.2 (Estimated · #58/122)
- Grok 4.5 public-lane score: 57.6 (Supported · #29/122)

| Benchmark | GLM-5.1 | Grok 4.5 | 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% | 67.8% | Grok 4.5 |
| Terminal-Bench 3.0 | Coming soon | 15.7% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 83.3% | Coming soon |
| deepSwe | Coming soon | 53% | Coming soon |

### Coding

- Winner: Grok 4.5
- GLM-5.1 public-lane score: 49.2 (Supported · #44/146)
- Grok 4.5 public-lane score: 57.7 (Supported · #27/146)

| Benchmark | GLM-5.1 | Grok 4.5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 58.4% | 64.7% | Grok 4.5 |
| 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% | 87.4% | Grok 4.5 |
| SWE-bench (Vals) | 76.4% | 86.6% | Grok 4.5 |
| SWE Multilingual | Coming soon | 78% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 83.3% | Coming soon |
| CursorBench 3.2 | Coming soon | 66.7% | Coming soon |
| VulcanBench v3 | Coming soon | 89.9% | Coming soon |
| PostTrainBench v1.1 | Coming soon | 23.4% | Coming soon |

### Reasoning

- Winner: Not comparable
- GLM-5.1 public-lane score: 73 (Unranked · 2 rankable rows)
- Grok 4.5 public-lane score: 50.4 (#28/28)

| Benchmark | GLM-5.1 | Grok 4.5 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | Coming soon | 52.6% | Coming soon |
| ARC-AGI-3 | Coming soon | 0.3% | Coming soon |
| ARC-AGI-1 | Coming soon | 85.67% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- GLM-5.1 public-lane score: Coming soon
- Grok 4.5 public-lane score: 79.5 (Unranked · 1 rankable row)

### Knowledge

- Winner: Grok 4.5
- GLM-5.1 public-lane score: 52.6 (Supported · #61/174)
- Grok 4.5 public-lane score: 67 (Supported · #19/174)

| Benchmark | GLM-5.1 | Grok 4.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 86.2% | Coming soon | Coming soon |
| HLE | 52.3% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 84.5% | 92.9% | Grok 4.5 |
| MMLU-Pro (Vals) | 86.9% | 89.2% | Grok 4.5 |

### Instruction Following

- Winner: Not comparable
- GLM-5.1 public-lane score: 92.4 (#4/125)
- Grok 4.5 public-lane score: Coming soon

### Mathematics

- Winner: Not comparable
- GLM-5.1 public-lane score: 63.8 (#3/7)
- Grok 4.5 public-lane score: Coming soon

| Benchmark | GLM-5.1 | Grok 4.5 | 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 4.5?

Grok 4.5 is ahead overall on BenchLM right now.

### Where is the biggest gap between GLM-5.1 and Grok 4.5?

The widest category gap is in reasoning, where the averages are 73 for GLM-5.1 and 50.4 for Grok 4.5.

### 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 4.5 cover on BenchLM?

Grok 4.5 currently has 17 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GLM-5.1 vs GLM-5.3](/compare/glm-5-1-vs-glm-5-3)
- [Grok 4.5 vs GLM-5.3](/compare/glm-5-3-vs-grok-4-5)
- [GLM-5.1 vs GLM-5.2](/compare/glm-5-1-vs-glm-5-2)
- [Grok 4.5 vs GLM-5.2](/compare/glm-5-2-vs-grok-4-5)

## Explore More

- [GLM-5.1 profile](/models/glm-5-1)
- [Grok 4.5 profile](/models/grok-4-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)