# Claude Sonnet 4.6 vs Composer 2.5

> Side-by-side benchmark comparison for Claude Sonnet 4.6 and Composer 2.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-sonnet-4-6-vs-composer-2-5
- Last updated: October 2, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Composer 2.5 if you want the stronger benchmark profile. Claude Sonnet 4.6 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Composer 2.5 leads overall 61 to 56.88.
- The biggest single benchmark swing is cursorBench31 in Coding, with scores of 48.8% and 63.2%.
- Composer 2.5 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Claude Sonnet 4.6 | Composer 2.5 |
|----------|----------|----------|
| Creator | Anthropic | Cursor |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 200K |
| Overall Score | 56.88 | null |
| Benchmarks Covered | 26 | 8 |
| Pricing (input/output) | $3.00 / $15.00 | $0.50 / $2.50 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 43.4 (Supported · #53/119)
- Composer 2.5 public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.6 | Composer 2.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 59.1% | 69.3% | Composer 2.5 |
| OSWorld-Verified | 72.1% | Coming soon | Coming soon |
| Claw-Eval | 67.8% | Coming soon | Coming soon |
| CyberGym | 65.2% | Coming soon | Coming soon |
| Gert Labs | 62.92% | Coming soon | Coming soon |
| OSWorld 2.0 | 8.3% | Coming soon | Coming soon |
| JobBench | 36.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 57.3% | 58.4% | Composer 2.5 |
| ApprenticeBench | 2% | Coming soon | Coming soon |

### Coding

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 47.1 (Supported · #48/144)
- Composer 2.5 public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.6 | Composer 2.5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 79.6% | Coming soon | Coming soon |
| SWE-Rebench | 60.7% | Coming soon | Coming soon |
| React Native Evals | 80.6% | Coming soon | Coming soon |
| Vibe Code Bench | 51.48% | Coming soon | Coming soon |
| cursorBench31 | 48.8% | 63.2% | Composer 2.5 |
| FrontierCode 1.1 Main | 24.3% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 82.1% | Coming soon | Coming soon |
| SWE-bench (Vals) | 77.4% | 79.6% | Composer 2.5 |
| Terminal-Bench 2.0 | Coming soon | 69.3% | Coming soon |
| SWE Multilingual | Coming soon | 79.8% | Coming soon |
| CursorBench 3.2 | Coming soon | 56.1% | Coming soon |
| CursorBench 4.0 | Coming soon | 27.7% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 69.2 (Unranked · 2 rankable rows)
- Composer 2.5 public-lane score: Coming soon

### Multimodal & Grounded

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 55.1 (#34/49)
- Composer 2.5 public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.6 | Composer 2.5 | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 77.4% | Coming soon | Coming soon |

### Knowledge

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 53.5 (Supported · #57/171)
- Composer 2.5 public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.6 | Composer 2.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 89.9% | Coming soon | Coming soon |
| SuperGPQA | 95% | Coming soon | Coming soon |
| MMLU-Pro | 79.2% | Coming soon | Coming soon |
| HLE | 49% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 85.6% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 87.3% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 46.6 (#87/125)
- Composer 2.5 public-lane score: Coming soon

### Mathematics

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 48.8 (Unranked · 2 rankable rows)
- Composer 2.5 public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.6 | Composer 2.5 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 32.400% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 8.300% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Claude Sonnet 4.6 or Composer 2.5?

Composer 2.5 is ahead overall on BenchLM right now.

### How many benchmarks does Claude Sonnet 4.6 cover on BenchLM?

Claude Sonnet 4.6 currently has 26 sourced benchmark scores on BenchLM.

### How many benchmarks does Composer 2.5 cover on BenchLM?

Composer 2.5 currently has 8 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Sonnet 4.6 vs Composer 2](/compare/claude-sonnet-4-6-vs-composer-2)
- [Composer 2.5 vs Composer 2](/compare/composer-2-vs-composer-2-5)
- [Claude Sonnet 4.6 vs Composer 2 Fast](/compare/claude-sonnet-4-6-vs-composer-2-fast)
- [Composer 2.5 vs Composer 2 Fast](/compare/composer-2-5-vs-composer-2-fast)

## Explore More

- [Claude Sonnet 4.6 profile](/models/claude-sonnet-4-6)
- [Composer 2.5 profile](/models/composer-2-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)