# GLM-5.1 vs GPT-5.4 Pro

> Side-by-side benchmark comparison for GLM-5.1 and GPT-5.4 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.6

## Quick Verdict

Pick GPT-5.4 Pro 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

- GPT-5.4 Pro leads overall 72.44 to 57.71.
- The clearest category separation is in mathematics, where the averages are 63.8 for GLM-5.1 and 68.8 for GPT-5.4 Pro.
- The biggest single benchmark swing is FrontierMath v2 (Tier 4) in Mathematics, with scores of 12.500% and 37.500%.
- GLM-5.1 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-5.4 Pro also has the larger context window at 1.05M.

## Model Snapshot

| Property | GLM-5.1 | GPT-5.4 Pro |
|----------|----------|----------|
| Creator | Z.AI | OpenAI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 203K | 1.05M |
| Overall Score | 57.71 | 72.44 |
| Benchmarks Covered | 26 | 10 |
| Pricing (input/output) | $1.40 / $4.40 | $30.00 / $180.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- GLM-5.1 public-lane score: 42.1 (Estimated · #43/105)
- GPT-5.4 Pro public-lane score: Coming soon

| Benchmark | GLM-5.1 | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 63.5% | Coming soon | Coming soon |
| BrowseComp | 68% | 89.3% | GPT-5.4 Pro |
| 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 |

### Coding

- Winner: Not comparable
- GLM-5.1 public-lane score: 51.5 (Supported · #36/135)
- GPT-5.4 Pro public-lane score: Coming soon

| Benchmark | GLM-5.1 | GPT-5.4 Pro | 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% | Coming soon | Coming soon |
| SWE-bench (Vals) | 76.4% | Coming soon | Coming soon |

### Reasoning

- Winner: Not comparable
- GLM-5.1 public-lane score: 71.7 (Unranked · 2 rankable rows)
- GPT-5.4 Pro public-lane score: 70.2 (Unranked · 2 rankable rows)

| Benchmark | GLM-5.1 | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | Coming soon | 83.3% | Coming soon |

### Knowledge

- Winner: Not comparable
- GLM-5.1 public-lane score: 50.2 (Supported · #54/160)
- GPT-5.4 Pro public-lane score: Coming soon

| Benchmark | GLM-5.1 | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 86.2% | Coming soon | Coming soon |
| HLE | 52.3% | 58.7% | GPT-5.4 Pro |
| GPQA Diamond (Vals) | 84.5% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.9% | Coming soon | Coming soon |
| FrontierScience | Coming soon | 36.7% | Coming soon |
| FrontierScience Research | Coming soon | 36.7% | Coming soon |
| HLE w/o tools | Coming soon | 42.7% | Coming soon |

### Instruction Following

- Winner: Not comparable
- GLM-5.1 public-lane score: 92.4 (#4/124)
- GPT-5.4 Pro public-lane score: Coming soon

### Mathematics

- Winner: Not comparable
- GLM-5.1 public-lane score: 63.8 (#3/7)
- GPT-5.4 Pro public-lane score: 68.8 (Unranked · 4 rankable rows)

| Benchmark | GLM-5.1 | GPT-5.4 Pro | 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% | 50.000% | GPT-5.4 Pro |
| FrontierMath v2 (Tier 4) | 12.500% | 37.500% | GPT-5.4 Pro |
| IPhO 2025 (Theory) | Coming soon | 93.5% | Coming soon |
| FrontierMath (legacy) | Coming soon | 50% | Coming soon |

## FAQ

### Which is better overall, GLM-5.1 or GPT-5.4 Pro?

GPT-5.4 Pro is ahead overall on BenchLM right now.

### Where is the biggest gap between GLM-5.1 and GPT-5.4 Pro?

The widest category gap is in mathematics, where the averages are 63.8 for GLM-5.1 and 68.8 for GPT-5.4 Pro.

### 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 GPT-5.4 Pro cover on BenchLM?

GPT-5.4 Pro currently has 10 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GLM-5.1 vs GLM-5.3](/compare/glm-5-1-vs-glm-5-3)
- [GPT-5.4 Pro vs GLM-5.3](/compare/glm-5-3-vs-gpt-5-4-pro)
- [GLM-5.1 vs GLM-5.2](/compare/glm-5-1-vs-glm-5-2)
- [GPT-5.4 Pro vs GLM-5.2](/compare/glm-5-2-vs-gpt-5-4-pro)

## Explore More

- [GLM-5.1 profile](/models/glm-5-1)
- [GPT-5.4 Pro profile](/models/gpt-5-4-pro)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)