# GLM-5.3-Flash vs LongCat-2.5

> Side-by-side benchmark comparison for GLM-5.3-Flash and LongCat-2.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/glm-5-3-flash-vs-longcat-2-5
- Last updated: November 9, 2026

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

## Quick Verdict

GLM-5.3-Flash leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- GLM-5.3-Flash has the higher overall point estimate 57.85 to 0. Conditional score ranges do not establish rank confidence.
- The biggest single benchmark swing is Agents' Last Exam in Agentic, with scores of 26.3% and 38.5%.
- 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-5.3-Flash | LongCat-2.5 |
|----------|----------|----------|
| Creator | Z.AI | Meituan |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Hybrid |
| Context | 1M | 1M |
| Overall Score | 57.85 | null |
| Benchmarks Covered | 29 | 22 |
| Pricing (input/output) | $0.00 / $0.00 | $0.30 / $1.20 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- GLM-5.3-Flash public-lane score: 58.3 (Supported · #35/132)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | GLM-5.3-Flash | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.1 | 35.50% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 84.3% | 88.4% | LongCat-2.5 |
| Toolathlon-Verified | 78.4% | Coming soon | Coming soon |
| AutomationBench | 48.8% | 51.8% | LongCat-2.5 |
| Agents' Last Exam | 26.3% | 38.5% | LongCat-2.5 |
| HLE w/ tools | 55.3% | 63.1% | LongCat-2.5 |
| Terminal-Bench 2.1 (Vals) | 62.9% | Coming soon | Coming soon |
| Hermes Index | 35.0% | Coming soon | Coming soon |
| Hermes Bench | 68.9% | Coming soon | Coming soon |
| MazeBench | 0% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | Coming soon | 38.50% | Coming soon |
| BrowseComp | Coming soon | 91.9% | Coming soon |
| MCP Atlas | Coming soon | 83.1% | Coming soon |
| JobBench | Coming soon | 65.4% | Coming soon |
| skillsBench | Coming soon | 63.3% | Coming soon |
| SpreadsheetBench 2 | Coming soon | 34.9% | Coming soon |
| Claw-Eval | Coming soon | 78.3% | Coming soon |

### Coding

- Winner: Not comparable
- GLM-5.3-Flash public-lane score: 48.5 (Supported · #52/158)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | GLM-5.3-Flash | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 84.3% | 88.4% | LongCat-2.5 |
| DeepSWE | 63.4% | 64.6% | LongCat-2.5 |
| NL2Repo | 56.3% | 60.5% | LongCat-2.5 |
| LiveCodeBench (Vals) | 80.5% | Coming soon | Coming soon |
| SWE-bench (Vals) | 92.0% | Coming soon | Coming soon |
| OpenHarmony Bench | 57.3% | Coming soon | Coming soon |
| FrontierSWE v2 | 18.1% | Coming soon | Coming soon |
| Bug Hunt Bench | 17.7 fixes | Coming soon | Coming soon |
| ProgramBench | Coming soon | 25.5% | Coming soon |
| PaperBench | Coming soon | 82.1% | Coming soon |
| SWE-Atlas Codebase QnA | Coming soon | 58.3% | Coming soon |

### Reasoning

- Winner: Not comparable
- GLM-5.3-Flash public-lane score: 49.8 (Estimated · #53/157)
- LongCat-2.5 public-lane score: Coming soon

### Multimodal & Grounded

- Winner: Not comparable
- GLM-5.3-Flash public-lane score: 64.4 (Estimated · #27/67)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | GLM-5.3-Flash | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| ExtractBench (LlamaIndex) | 80.75% | Coming soon | Coming soon |
| ParseBench | 70.55% | Coming soon | Coming soon |
| OfficeQA Pro | 62.4% | Coming soon | Coming soon |
| CharXiv | 89.4% | 90.2% | LongCat-2.5 |
| Chartography (tools) | 78.0% | Coming soon | Coming soon |
| BabyVision | 53.4% | Coming soon | Coming soon |
| MMVU | 80.5% | Coming soon | Coming soon |
| Vision2Web | Coming soon | 78.6% | Coming soon |
| MathVision w/ Python | Coming soon | 96.5% | Coming soon |
| Video-MME | Coming soon | 85.2% | Coming soon |

### Knowledge

- Winner: Not comparable
- GLM-5.3-Flash public-lane score: 60.1 (Estimated · #46/179)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | GLM-5.3-Flash | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 86.4% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.1% | Coming soon | Coming soon |
| FrontierScience | Coming soon | 77% | Coming soon |

### Mathematics

- Winner: Not comparable
- GLM-5.3-Flash public-lane score: 56.9 (Unranked · 2 rankable rows)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | GLM-5.3-Flash | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 55.789% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 17.073% | Coming soon | Coming soon |

## FAQ

### Which is better overall, GLM-5.3-Flash or LongCat-2.5?

GLM-5.3-Flash has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

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

GLM-5.3-Flash currently has 29 sourced benchmark scores on BenchLM.

### How many benchmarks does LongCat-2.5 cover on BenchLM?

LongCat-2.5 currently has 22 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GLM-5.3-Flash vs GLM-5.3](/compare/glm-5-3-vs-glm-5-3-flash)
- [LongCat-2.5 vs GLM-5.3](/compare/glm-5-3-vs-longcat-2-5)
- [GLM-5.3-Flash vs GLM-5.2](/compare/glm-5-2-vs-glm-5-3-flash)
- [LongCat-2.5 vs GLM-5.2](/compare/glm-5-2-vs-longcat-2-5)

## Explore More

- [GLM-5.3-Flash profile](/models/glm-5-3-flash)
- [LongCat-2.5 profile](/models/longcat-2-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)