# Composer 2.5 vs Qwen3.5-27B

> Side-by-side benchmark comparison for Composer 2.5 and Qwen3.5-27B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/composer-2-5-vs-qwen3-5-27b
- Last updated: October 2, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Composer 2.5 and Qwen3.5-27B share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Qwen3.5-27B has the lower published output-token price.
- Qwen3.5-27B has the larger published context window at 262K.

## Model Snapshot

| Property | Composer 2.5 | Qwen3.5-27B |
|----------|----------|----------|
| Creator | Cursor | Alibaba |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 200K | 262K |
| Independent public score (not head-to-head) | null | 48.33 |
| Benchmarks Covered | 8 | 16 |
| 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
- Qwen3.5-27B public-lane score: 35.1 (Estimated · #70/119)

| Benchmark | Composer 2.5 | Qwen3.5-27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 69.3% | 41.6% | Composer 2.5 |
| Terminal-Bench 2.1 (Vals) | 58.4% | Coming soon | Coming soon |
| BrowseComp | Coming soon | 61% | Coming soon |
| OSWorld-Verified | Coming soon | 56.2% | Coming soon |
| Gert Labs | Coming soon | 39.41% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Composer 2.5 public-lane score: Coming soon
- Qwen3.5-27B public-lane score: 34.9 (Estimated · #83/144)

| Benchmark | Composer 2.5 | Qwen3.5-27B | 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% | Coming soon | Coming soon |
| CursorBench 4.0 | 27.7% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 72.4% | Coming soon |
| SWE-Rebench | Coming soon | 58.9% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Composer 2.5 public-lane score: Coming soon
- Qwen3.5-27B public-lane score: 52.7 (Unranked · 3 rankable rows)

| Benchmark | Composer 2.5 | Qwen3.5-27B | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | Coming soon | 60.6% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Composer 2.5 public-lane score: Coming soon
- Qwen3.5-27B public-lane score: 71.6 (Unranked · 3 rankable rows)

| Benchmark | Composer 2.5 | Qwen3.5-27B | Winner |
|-----------|-----------|-----------|--------|
| MMMU | Coming soon | 82.3% | Coming soon |
| MMVU | Coming soon | 73.3% | Coming soon |
| MathVision | Coming soon | 86.0% | Coming soon |
| V* | Coming soon | 93.7% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Composer 2.5 public-lane score: Coming soon
- Qwen3.5-27B public-lane score: 44.4 (Supported · #83/171)

| Benchmark | Composer 2.5 | Qwen3.5-27B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-Pro | Coming soon | 86.1% | Coming soon |
| SuperGPQA | Coming soon | 65.6% | Coming soon |
| GPQA | Coming soon | 85.5% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- Composer 2.5 public-lane score: Coming soon
- Qwen3.5-27B public-lane score: 87.1 (#10/16)

| Benchmark | Composer 2.5 | Qwen3.5-27B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 82.2% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Composer 2.5 public-lane score: Coming soon
- Qwen3.5-27B public-lane score: 91.5 (#12/125)

| Benchmark | Composer 2.5 | Qwen3.5-27B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 95% | Coming soon |

## FAQ

### Is there enough evidence to pick between Composer 2.5 and Qwen3.5-27B?

Not yet. The models share only 1 sourced benchmark row, 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)
- [Qwen3.5-27B vs Composer 2](/compare/composer-2-vs-qwen3-5-27b)
- [Composer 2.5 vs Composer 2 Fast](/compare/composer-2-5-vs-composer-2-fast)
- [Qwen3.5-27B vs Composer 2 Fast](/compare/composer-2-fast-vs-qwen3-5-27b)

## Explore More

- [Composer 2.5 profile](/models/composer-2-5)
- [Qwen3.5-27B profile](/models/qwen3-5-27b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)