# GLM-5.2 vs GLM-5.3-Flash

> Side-by-side benchmark comparison for GLM-5.2 and GLM-5.3-Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/glm-5-2-vs-glm-5-3-flash
- Last updated: October 10, 2026

- Shared sourced benchmarks: 10
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

GLM-5.2 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- GLM-5.2 has the higher overall point estimate 61.55 to 57.36. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in coding, where the averages are 54.5 for GLM-5.2 and 49.3 for GLM-5.3-Flash.
- The biggest single benchmark swing is LiveCodeBench (Vals) in Coding, with scores of 69.5% and 80.5%.
- GLM-5.3-Flash is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | GLM-5.2 | GLM-5.3-Flash |
|----------|----------|----------|
| Creator | Z.AI | Z.AI |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 61.55 | 57.36 |
| Benchmarks Covered | 27 | 21 |
| Pricing (input/output) | $1.40 / $4.40 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: GLM-5.2
- GLM-5.2 public-lane score: 56.3 (Supported · #33/123)
- GLM-5.3-Flash public-lane score: 55.7 (Supported · #34/123)

| Benchmark | GLM-5.2 | GLM-5.3-Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 4.6% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 81.0% | 84.3% | GLM-5.3-Flash |
| MCP Atlas | 76.8% | Coming soon | Coming soon |
| Toolathlon | 48.2% | Coming soon | Coming soon |
| ResearchClawBench | 20.7% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 67.8% | 62.9% | GLM-5.2 |
| HLE w/ tools | 54.7% | 55.3% | GLM-5.3-Flash |
| Toolathlon-Verified | Coming soon | 78.4% | Coming soon |
| AutomationBench | Coming soon | 48.8% | Coming soon |
| Agents' Last Exam | Coming soon | 26.3% | Coming soon |

### Coding

- Winner: GLM-5.2
- GLM-5.2 public-lane score: 54.5 (Supported · #31/146)
- GLM-5.3-Flash public-lane score: 49.3 (Supported · #42/146)

| Benchmark | GLM-5.2 | GLM-5.3-Flash | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 62.1% | Coming soon | Coming soon |
| NL2Repo | 48.9% | 56.3% | GLM-5.3-Flash |
| Terminal-Bench 2.1 | 81.0% | 84.3% | GLM-5.3-Flash |
| ProgramBench | 63.7% | Coming soon | Coming soon |
| CursorBench 3.2 | 55.0% | Coming soon | Coming soon |
| OpenHarmony Bench | 58.4% | 57.3% | GLM-5.2 |
| LiveCodeBench (Vals) | 69.5% | 80.5% | GLM-5.3-Flash |
| SWE-bench (Vals) | 82.8% | 92.0% | GLM-5.3-Flash |
| PostTrainBench v1.1 | 31.7% | Coming soon | Coming soon |
| DeepSWE | Coming soon | 63.4% | Coming soon |
| FrontierSWE v2 | Coming soon | 18.1% | Coming soon |
| Bug Hunt Bench | Coming soon | 17.7 fixes | Coming soon |

### Reasoning

- Winner: Not comparable
- GLM-5.2 public-lane score: 79.9 (Unranked · 2 rankable rows)
- GLM-5.3-Flash public-lane score: 81.1 (#11/28)

| Benchmark | GLM-5.2 | GLM-5.3-Flash | Winner |
|-----------|-----------|-----------|--------|
| CritPt | 20.9% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- GLM-5.2 public-lane score: Coming soon
- GLM-5.3-Flash public-lane score: 84 (#14/54)

| Benchmark | GLM-5.2 | GLM-5.3-Flash | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | Coming soon | 62.4% | Coming soon |
| CharXiv | Coming soon | 89.4% | Coming soon |
| Chartography (tools) | Coming soon | 78.0% | Coming soon |
| BabyVision | Coming soon | 53.4% | Coming soon |
| MMVU | Coming soon | 80.5% | Coming soon |

### Knowledge

- Winner: GLM-5.3-Flash
- GLM-5.2 public-lane score: 57.9 (Supported · #49/177)
- GLM-5.3-Flash public-lane score: 60.5 (Supported · #43/177)

| Benchmark | GLM-5.2 | GLM-5.3-Flash | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 91.2% | Coming soon | Coming soon |
| GPQA-D | 91.2% | Coming soon | Coming soon |
| HLE | 40.5% | Coming soon | Coming soon |
| HLE w/o tools | 40.5% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 85.6% | 86.4% | GLM-5.3-Flash |
| MMLU-Pro (Vals) | 86.7% | 86.1% | GLM-5.2 |

### Instruction Following

- Winner: Not comparable
- GLM-5.2 public-lane score: 89.9 (#26/127)
- GLM-5.3-Flash public-lane score: Coming soon

### Mathematics

- Winner: Not comparable
- GLM-5.2 public-lane score: 80.7 (Unranked · 4 rankable rows)
- GLM-5.3-Flash public-lane score: Coming soon

| Benchmark | GLM-5.2 | GLM-5.3-Flash | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 99.2% | Coming soon | Coming soon |
| HMMT Nov 2025 | 94.4% | Coming soon | Coming soon |
| HMMT Feb 2026 | 92.5% | Coming soon | Coming soon |
| MMAnswerBench | 91.0% | Coming soon | Coming soon |

## FAQ

### Which is better overall, GLM-5.2 or GLM-5.3-Flash?

GLM-5.2 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between GLM-5.2 and GLM-5.3-Flash?

The widest category gap is in coding, where the averages are 54.5 for GLM-5.2 and 49.3 for GLM-5.3-Flash.

### How many benchmarks does GLM-5.2 cover on BenchLM?

GLM-5.2 currently has 27 sourced benchmark scores on BenchLM.

### How many benchmarks does GLM-5.3-Flash cover on BenchLM?

GLM-5.3-Flash currently has 21 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GLM-5.2 vs GLM-5.3](/compare/glm-5-2-vs-glm-5-3)
- [GLM-5.3-Flash vs GLM-5.3](/compare/glm-5-3-vs-glm-5-3-flash)
- [GLM-5.2 vs GLM-5.1](/compare/glm-5-1-vs-glm-5-2)
- [GLM-5.3-Flash vs GLM-5.1](/compare/glm-5-1-vs-glm-5-3-flash)

## Explore More

- [GLM-5.2 profile](/models/glm-5-2)
- [GLM-5.3-Flash profile](/models/glm-5-3-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)