# Claude Fable 5.2 vs Claude Haiku 5.5

> Side-by-side benchmark comparison for Claude Fable 5.2 and Claude Haiku 5.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-fable-5-2-vs-claude-haiku-5-5
- Last updated: November 9, 2026

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

## Quick Verdict

Claude Fable 5.2 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Claude Fable 5.2 has the higher overall point estimate 91.19 to 66.12. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in coding, where the averages are 86.9 for Claude Fable 5.2 and 51.7 for Claude Haiku 5.5.
- The biggest single benchmark swing is ARC-AGI-3 Provider Adapter in Reasoning, with scores of 94.90% and 2.82%.
- Claude Haiku 5.5 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Claude Fable 5.2 | Claude Haiku 5.5 |
|----------|----------|----------|
| Creator | Anthropic | Anthropic |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 91.19 | 66.12 |
| Benchmarks Covered | 30 | 21 |
| Pricing (input/output) | $8.00 / $40.00 | $0.10 / $0.50 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 90.7 (Estimated · #1/132)
- Claude Haiku 5.5 public-lane score: 60.7 (Supported · #25/132)

| Benchmark | Claude Fable 5.2 | Claude Haiku 5.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 67.60% | 39.20% | Claude Fable 5.2 |
| Terminal-Bench-Science 0.1 | 74.6% | Coming soon | Coming soon |
| AutomationBench | 51.4% | Coming soon | Coming soon |
| OSWorld 2.1 Offline | 89.3% | 72.4% | Claude Fable 5.2 |
| WANDR | 82.1% | Coming soon | Coming soon |
| Remote Labor Index | 41.3% | Coming soon | Coming soon |
| RoboDojo Sim | 64.9% | Coming soon | Coming soon |
| DRACO | 87.7% | Coming soon | Coming soon |
| Agents' Last Exam (Linux) | Coming soon | 57.0% | Coming soon |
| HLE w/ tools | Coming soon | 57.4% | Coming soon |
| MazeBench | Coming soon | 1% | Coming soon |
| Hermes Index | Coming soon | 37.0% | Coming soon |
| Hermes Bench | Coming soon | 71.0% | Coming soon |

### Coding

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 86.9 (Estimated · #1/158)
- Claude Haiku 5.5 public-lane score: 51.7 (Supported · #43/158)

| Benchmark | Claude Fable 5.2 | Claude Haiku 5.5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 93% | Coming soon | Coming soon |
| SWE Multilingual | 96.6% | Coming soon | Coming soon |
| SWE Multimodal | 74.1% | Coming soon | Coming soon |
| DeepSWE | 74.3% | Coming soon | Coming soon |
| FrontierSWE v2 | 69.9% | 43.8% | Claude Fable 5.2 |
| ProgramBench | 85.6% | Coming soon | Coming soon |
| FrontierCode 2.0 | 49.1% | 27.7% | Claude Fable 5.2 |
| CursorBench 4.0 | 60.0% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | Coming soon | 46.4% | Coming soon |
| Bug Hunt Bench | Coming soon | 21.5 fixes | Coming soon |

### Reasoning

- Winner: Claude Fable 5.2
- Claude Fable 5.2 public-lane score: 90.7 (Supported · #1/157)
- Claude Haiku 5.5 public-lane score: 58.1 (Supported · #38/157)

| Benchmark | Claude Fable 5.2 | Claude Haiku 5.5 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-3 | 65.7% | 0.5% | Claude Fable 5.2 |
| ARC-AGI-3 Provider Adapter | 94.90% | 2.82% | Claude Fable 5.2 |
| STEM Professor Bench | 61.8% | Coming soon | Coming soon |
| ARC-AGI-1 | Coming soon | 89.00% | Coming soon |
| ARC-AGI-2 | Coming soon | 61.3% | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 89.8 (Estimated · #1/67)
- Claude Haiku 5.5 public-lane score: 60.7 (Supported · #35/67)

| Benchmark | Claude Fable 5.2 | Claude Haiku 5.5 | Winner |
|-----------|-----------|-----------|--------|
| Chartography (no tools) | 73.4% | 46.4% | Claude Fable 5.2 |
| Chartography (tools) | 91.6% | Coming soon | Coming soon |
| OfficeQA | 83.4% | Coming soon | Coming soon |
| OfficeQA Pro | 72.9% | Coming soon | Coming soon |
| BenchCAD 2.1 | 75.4% | Coming soon | Coming soon |
| BenchCAD 2.1 (tools) | 83.5% | Coming soon | Coming soon |
| PerceptionBench (tools) | Coming soon | 78.6% | Coming soon |
| ParseBench | Coming soon | 56.02% | Coming soon |

### Knowledge

- Winner: Claude Fable 5.2
- Claude Fable 5.2 public-lane score: 97.6 (Supported · #1/179)
- Claude Haiku 5.5 public-lane score: 63.4 (Supported · #38/179)

| Benchmark | Claude Fable 5.2 | Claude Haiku 5.5 | Winner |
|-----------|-----------|-----------|--------|
| HLE | 74.2% | Coming soon | Coming soon |
| HLE w/o tools | 73.2% | 45.9% | Claude Fable 5.2 |
| PhysicianBench | 64.4% | Coming soon | Coming soon |

### Multilingual

- Winner: Not comparable
- Claude Fable 5.2 public-lane score: Coming soon
- Claude Haiku 5.5 public-lane score: Coming soon

| Benchmark | Claude Fable 5.2 | Claude Haiku 5.5 | Winner |
|-----------|-----------|-----------|--------|
| GMMLU | 96.0% | Coming soon | Coming soon |
| MILU | 94.1% | Coming soon | Coming soon |

### Mathematics

- Winner: Not comparable
- Claude Fable 5.2 public-lane score: Coming soon
- Claude Haiku 5.5 public-lane score: 75.6 (Unranked · 2 rankable rows)

| Benchmark | Claude Fable 5.2 | Claude Haiku 5.5 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 75.088% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 46.341% | Coming soon |

## FAQ

### Which is better overall, Claude Fable 5.2 or Claude Haiku 5.5?

Claude Fable 5.2 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Claude Fable 5.2 and Claude Haiku 5.5?

The widest category gap is in coding, where the averages are 86.9 for Claude Fable 5.2 and 51.7 for Claude Haiku 5.5.

### How many benchmarks does Claude Fable 5.2 cover on BenchLM?

Claude Fable 5.2 currently has 30 sourced benchmark scores on BenchLM.

### How many benchmarks does Claude Haiku 5.5 cover on BenchLM?

Claude Haiku 5.5 currently has 21 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Fable 5.2 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-claude-fable-5-2)
- [Claude Haiku 5.5 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-claude-haiku-5-5)
- [Claude Fable 5.2 vs Claude Fable 5](/compare/claude-fable-vs-claude-fable-5-2)
- [Claude Haiku 5.5 vs Claude Fable 5](/compare/claude-fable-vs-claude-haiku-5-5)

## Explore More

- [Claude Fable 5.2 profile](/models/claude-fable-5-2)
- [Claude Haiku 5.5 profile](/models/claude-haiku-5-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)