# GLM-5.1 vs GPT-5.4 mini

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

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

- Shared sourced benchmarks: 11
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.6

## Quick Verdict

Pick GLM-5.1 if you want the stronger benchmark profile. GPT-5.4 mini 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 55.72.
- The clearest category separation is in mathematics, where the averages are 63.8 for GLM-5.1 and 44.3 for GPT-5.4 mini.
- The biggest single benchmark swing is Vibe Code Bench in Coding, with scores of 31.46% and 47.97%.
- GLM-5.1 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-5.4 mini also has the larger context window at 400K.

## Model Snapshot

| Property | GLM-5.1 | GPT-5.4 mini |
|----------|----------|----------|
| Creator | Z.AI | OpenAI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 203K | 400K |
| Overall Score | 57.71 | 55.72 |
| Benchmarks Covered | 26 | 19 |
| Pricing (input/output) | $1.40 / $4.40 | $0.75 / $4.50 |

## Category Breakdown

### Agentic

- Winner: Directional only
- GLM-5.1 public-lane score: 42.1 (Estimated · #43/105)
- GPT-5.4 mini public-lane score: 34.3 (Supported · #59/105)

| Benchmark | GLM-5.1 | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 63.5% | 60% | GLM-5.1 |
| BrowseComp | 68% | Coming soon | Coming soon |
| τ³-bench results | 70.6% | Coming soon | Coming soon |
| MCP Atlas | 71.8% | 57.7% | GLM-5.1 |
| 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% | 54.7% | GLM-5.1 |
| OSWorld-Verified | Coming soon | 72.1% | Coming soon |
| Toolathlon | Coming soon | 42.9% | Coming soon |
| τ²-bench results | Coming soon | 93.4% | Coming soon |

### Coding

- Winner: GLM-5.1
- GLM-5.1 public-lane score: 51.5 (Supported · #36/135)
- GPT-5.4 mini public-lane score: 38.6 (Supported · #66/135)

| Benchmark | GLM-5.1 | GPT-5.4 mini | 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% | 47.97% | GPT-5.4 mini |
| OpenHarmony Bench | 52.3% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 81.4% | 81.5% | GPT-5.4 mini |
| SWE-bench (Vals) | 76.4% | 73.0% | GLM-5.1 |
| FrontierCode 1.1 Main | Coming soon | 27.0% | Coming soon |

### Reasoning

- Winner: Not comparable
- GLM-5.1 public-lane score: 71.7 (Unranked · 2 rankable rows)
- GPT-5.4 mini public-lane score: 73.9 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Not comparable
- GLM-5.1 public-lane score: Coming soon
- GPT-5.4 mini public-lane score: 57.3 (#33/50)

| Benchmark | GLM-5.1 | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 76.6% | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 78% | Coming soon |

### Knowledge

- Winner: GLM-5.1
- GLM-5.1 public-lane score: 50.2 (Supported · #54/160)
- GPT-5.4 mini public-lane score: 49.3 (Supported · #56/160)

| Benchmark | GLM-5.1 | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 86.2% | Coming soon | Coming soon |
| HLE | 52.3% | 41.5% | GLM-5.1 |
| GPQA Diamond (Vals) | 84.5% | 83.1% | GLM-5.1 |
| MMLU-Pro (Vals) | 86.9% | 84.6% | GLM-5.1 |
| GPQA | Coming soon | 88% | Coming soon |
| HLE w/o tools | Coming soon | 28.2% | Coming soon |

### Instruction Following

- Winner: Directional only
- GLM-5.1 public-lane score: 92.4 (#4/124)
- GPT-5.4 mini public-lane score: 88.5 (#24/124)

### Mathematics

- Winner: Not comparable
- GLM-5.1 public-lane score: 63.8 (#3/7)
- GPT-5.4 mini public-lane score: 44.3 (Unranked · 2 rankable rows)

| Benchmark | GLM-5.1 | GPT-5.4 mini | 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% | 28.280% | GLM-5.1 |
| FrontierMath v2 (Tier 4) | 12.500% | 2.080% | GLM-5.1 |

## FAQ

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

GLM-5.1 is ahead overall on BenchLM right now.

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

The widest category gap is in mathematics, where the averages are 63.8 for GLM-5.1 and 44.3 for GPT-5.4 mini.

### 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 mini cover on BenchLM?

GPT-5.4 mini currently has 19 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 mini vs GLM-5.3](/compare/glm-5-3-vs-gpt-5-4-mini)
- [GLM-5.1 vs GLM-5.2](/compare/glm-5-1-vs-glm-5-2)
- [GPT-5.4 mini vs GLM-5.2](/compare/glm-5-2-vs-gpt-5-4-mini)

## Explore More

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