# Claude Fable 5 vs Composer 2.5

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

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

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

## Quick Verdict

Pick Claude Fable 5 if you want the stronger benchmark profile. Composer 2.5 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Claude Fable 5 leads overall 80.9 to 56.
- The clearest category separation is in coding, where the averages are 76.9 for Claude Fable 5 and 51.6 for Composer 2.5.
- The biggest single benchmark swing is Terminal-Bench 2.0 in Agentic, with scores of 84.3% and 69.3%.
- Composer 2.5 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Claude Fable 5 also has the larger context window at 1M+.

## Model Snapshot

| Property | Claude Fable 5 | Composer 2.5 |
|----------|----------|----------|
| Creator | Anthropic | Cursor |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M+ | 200K |
| Overall Score | 80.9 | null |
| Benchmarks Covered | 18 | 5 |
| Pricing (input/output) | $10.00 / $50.00 | $0.50 / $2.50 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Claude Fable 5 public-lane score: 74.8 (Supported · #3/151)
- Composer 2.5 public-lane score: 52 (Estimated · #52/151)

| Benchmark | Claude Fable 5 | Composer 2.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 34.0% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 84.3% | 69.3% | Claude Fable 5 |
| OSWorld-Verified | 85% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 80.5% | Coming soon | Coming soon |

### Coding

- Winner: Claude Fable 5
- Claude Fable 5 public-lane score: 76.9 (Supported · #2/183)
- Composer 2.5 public-lane score: 51.6 (Supported · #63/183)

| Benchmark | Claude Fable 5 | Composer 2.5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 95% | Coming soon | Coming soon |
| SWE-bench Pro | 80% | Coming soon | Coming soon |
| FrontierSWE v2 | 48.0% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 53.5% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 84.3% | 69.3% | Claude Fable 5 |
| cursorBench31 | 70.6% | 63.2% | Claude Fable 5 |
| cursorBench32 | 70.5% | 56.1% | Claude Fable 5 |
| VulcanBench v3 | 89.5% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 89.8% | Coming soon | Coming soon |
| SWE-bench (Vals) | 95.0% | Coming soon | Coming soon |
| SWE Multilingual | Coming soon | 79.8% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Claude Fable 5 public-lane score: 62.5 (Unranked · 2 rankable rows)
- Composer 2.5 public-lane score: Coming soon

| Benchmark | Claude Fable 5 | Composer 2.5 | Winner |
|-----------|-----------|-----------|--------|
| Blueprint-Bench 2 | 38.6% | Coming soon | Coming soon |
| OfficeQA Pro | 57.9% | Coming soon | Coming soon |

### Reasoning

- Winner: Coming soon
- Claude Fable 5 public-lane score: 76.2 (#11/22)
- Composer 2.5 public-lane score: Coming soon

### Knowledge

- Winner: Coming soon
- Claude Fable 5 public-lane score: 83.5 (Supported · #2/181)
- Composer 2.5 public-lane score: Coming soon

| Benchmark | Claude Fable 5 | Composer 2.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 93.2% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 91.5% | Coming soon | Coming soon |

### Instruction Following

- Winner: Coming soon
- Claude Fable 5 public-lane score: 78.3 (#54/120)
- Composer 2.5 public-lane score: Coming soon

## FAQ

### Which is better overall, Claude Fable 5 or Composer 2.5?

Claude Fable 5 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Fable 5 and Composer 2.5?

The widest category gap is in coding, where the averages are 76.9 for Claude Fable 5 and 51.6 for Composer 2.5.

### How many benchmarks does Claude Fable 5 cover on BenchLM?

Claude Fable 5 currently has 18 sourced benchmark scores on BenchLM.

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

Composer 2.5 currently has 5 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Fable 5 vs Claude Fable 5.1](/compare/claude-fable-vs-claude-fable-5-1)
- [Composer 2.5 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-composer-2-5)
- [Claude Fable 5 vs Composer 2](/compare/claude-fable-vs-composer-2)
- [Composer 2.5 vs Composer 2](/compare/composer-2-vs-composer-2-5)

## Explore More

- [Claude Fable 5 profile](/models/claude-fable)
- [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)