# Composer 2.5 vs GLM-5.3-Flash

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

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

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Composer 2.5 and GLM-5.3-Flash share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- GLM-5.3-Flash has the lower published output-token price.
- GLM-5.3-Flash has the larger published context window at 1M.

## Model Snapshot

| Property | Composer 2.5 | GLM-5.3-Flash |
|----------|----------|----------|
| Creator | Cursor | Z.AI |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 200K | 1M |
| Independent public score (not head-to-head) | null | 57.36 |
| Benchmarks Covered | 8 | 21 |
| Pricing (input/output) | $0.50 / $2.50 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Composer 2.5 public-lane score: Coming soon
- GLM-5.3-Flash public-lane score: 55.7 (Supported · #34/123)

| Benchmark | Composer 2.5 | GLM-5.3-Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 69.3% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 58.4% | 62.9% | GLM-5.3-Flash |
| Terminal-Bench 2.1 | Coming soon | 84.3% | Coming soon |
| Toolathlon-Verified | Coming soon | 78.4% | Coming soon |
| AutomationBench | Coming soon | 48.8% | Coming soon |
| Agents' Last Exam | Coming soon | 26.3% | Coming soon |
| HLE w/ tools | Coming soon | 55.3% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Composer 2.5 public-lane score: Coming soon
- GLM-5.3-Flash public-lane score: 49.3 (Supported · #42/146)

| Benchmark | Composer 2.5 | GLM-5.3-Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 69.3% | Coming soon | Coming soon |
| SWE Multilingual | 79.8% | Coming soon | Coming soon |
| cursorBench31 | 63.2% | Coming soon | Coming soon |
| CursorBench 3.2 | 56.1% | Coming soon | Coming soon |
| SWE-bench (Vals) | 79.6% | 92.0% | GLM-5.3-Flash |
| CursorBench 4.0 | 27.7% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 84.3% | Coming soon |
| DeepSWE | Coming soon | 63.4% | Coming soon |
| NL2Repo | Coming soon | 56.3% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 80.5% | Coming soon |
| OpenHarmony Bench | Coming soon | 57.3% | Coming soon |
| FrontierSWE v2 | Coming soon | 18.1% | Coming soon |
| Bug Hunt Bench | Coming soon | 17.7 fixes | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Composer 2.5 public-lane score: Coming soon
- GLM-5.3-Flash public-lane score: 81.1 (#11/28)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Composer 2.5 public-lane score: Coming soon
- GLM-5.3-Flash public-lane score: 84 (#14/54)

| Benchmark | Composer 2.5 | 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: Insufficient shared evidence
- Composer 2.5 public-lane score: Coming soon
- GLM-5.3-Flash public-lane score: 60.5 (Supported · #43/177)

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

## FAQ

### Is there enough evidence to pick between Composer 2.5 and GLM-5.3-Flash?

Not yet. The models share only 2 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Composer 2.5 vs Composer 2](/compare/composer-2-vs-composer-2-5)
- [GLM-5.3-Flash vs Composer 2](/compare/composer-2-vs-glm-5-3-flash)
- [Composer 2.5 vs Composer 2 Fast](/compare/composer-2-5-vs-composer-2-fast)
- [GLM-5.3-Flash vs Composer 2 Fast](/compare/composer-2-fast-vs-glm-5-3-flash)

## Explore More

- [Composer 2.5 profile](/models/composer-2-5)
- [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)