# Claude 3.7 Sonnet Thinking vs Claude Fable 5.1

> Side-by-side benchmark comparison for Claude 3.7 Sonnet Thinking and Claude Fable 5.1 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-3-7-sonnet-thinking-vs-claude-fable-5-1
- Last updated: October 14, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Claude 3.7 Sonnet Thinking and Claude Fable 5.1.

## Summary

- Claude 3.7 Sonnet Thinking and Claude Fable 5.1 do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Claude 3.7 Sonnet Thinking | Claude Fable 5.1 |
|----------|----------|----------|
| Creator | Anthropic | Anthropic |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 200K | 1M |
| Independent public score (not head-to-head) | null | 83.17 |
| Benchmarks Covered | 6 | 32 |
| Pricing (input/output) | N/A | $10.00 / $50.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet Thinking public-lane score: Coming soon
- Claude Fable 5.1 public-lane score: 80.9 (Supported · #2/124)

| Benchmark | Claude 3.7 Sonnet Thinking | Claude Fable 5.1 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | Coming soon | 55.80% | Coming soon |
| Terminal-Bench-Science 0.1 | Coming soon | 52.6% | Coming soon |
| OSWorld 2.0 | Coming soon | 41.7% | Coming soon |
| AutomationBench | Coming soon | 31.4% | Coming soon |
| Toolathlon-Verified | Coming soon | 77.8% | Coming soon |
| Toolathlon Verified Pass@3 | Coming soon | 81.5% | Coming soon |
| Toolathlon Verified Pass³ | Coming soon | 73.1% | Coming soon |
| Toolathlon Verified avg. turns | Coming soon | 23.7 turns | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 85.0% | Coming soon |
| ApprenticeBench | Coming soon | 72% | Coming soon |
| CWE-bench v1 | Coming soon | 58.0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet Thinking public-lane score: Coming soon
- Claude Fable 5.1 public-lane score: 76.8 (Supported · #3/148)

| Benchmark | Claude 3.7 Sonnet Thinking | Claude Fable 5.1 | Winner |
|-----------|-----------|-----------|--------|
| Bug Hunt Bench | Coming soon | 43.0 fixes | Coming soon |
| SWE-bench Pro | Coming soon | 81.2% | Coming soon |
| SWE Multilingual | Coming soon | 89.1% | Coming soon |
| SWE Multimodal | Coming soon | 54.7% | Coming soon |
| DeepSWE | Coming soon | 67.4% | Coming soon |
| FrontierSWE v2 | Coming soon | 56.3% | Coming soon |
| ProgramBench | Coming soon | 87.6% | Coming soon |
| CursorBench 3.2 | Coming soon | 73.4% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 90.5% | Coming soon |
| CursorBench 4.0 | Coming soon | 51.8% | Coming soon |
| PostTrainBench v1.1 | Coming soon | 40.2% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet Thinking public-lane score: Coming soon
- Claude Fable 5.1 public-lane score: 85.2 (#4/29)

| Benchmark | Claude 3.7 Sonnet Thinking | Claude Fable 5.1 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | Coming soon | 97.50% | Coming soon |
| ARC-AGI-2 | Coming soon | 90% | Coming soon |
| GraphWalks BFS 256K–1M | Coming soon | 65.0% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet Thinking public-lane score: Coming soon
- Claude Fable 5.1 public-lane score: Coming soon

| Benchmark | Claude 3.7 Sonnet Thinking | Claude Fable 5.1 | Winner |
|-----------|-----------|-----------|--------|
| MMMU | 75.0% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet Thinking public-lane score: Coming soon
- Claude Fable 5.1 public-lane score: 86.4 (Supported · #2/181)

| Benchmark | Claude 3.7 Sonnet Thinking | Claude Fable 5.1 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 78.2% | Coming soon | Coming soon |
| MMMLU | 86.1% | Coming soon | Coming soon |
| HLE | Coming soon | 65% | Coming soon |
| HLE w/o tools | Coming soon | 60.9% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 93.4% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 92.4% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet Thinking public-lane score: Coming soon
- Claude Fable 5.1 public-lane score: Coming soon

| Benchmark | Claude 3.7 Sonnet Thinking | Claude Fable 5.1 | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 93.2% | Coming soon | Coming soon |
| Gray Swan IPI (15 attempts) | Coming soon | 1.0% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet Thinking public-lane score: Coming soon
- Claude Fable 5.1 public-lane score: 96.8 (Unranked · 2 rankable rows)

| Benchmark | Claude 3.7 Sonnet Thinking | Claude Fable 5.1 | Winner |
|-----------|-----------|-----------|--------|
| MATH-500 | 96.2% | Coming soon | Coming soon |
| AIME 2024 | 61.3% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 90.175% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 87.805% | Coming soon |

## FAQ

### Can I compare Claude 3.7 Sonnet Thinking and Claude Fable 5.1 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Claude 3.7 Sonnet Thinking vs Claude 3.7 Sonnet](/compare/claude-3-7-sonnet-vs-claude-3-7-sonnet-thinking)
- [Claude Fable 5.1 vs Claude 3.7 Sonnet](/compare/claude-3-7-sonnet-vs-claude-fable-5-1)
- [Claude 3.7 Sonnet Thinking vs Claude Fable 5](/compare/claude-3-7-sonnet-thinking-vs-claude-fable)
- [Claude Fable 5.1 vs Claude Fable 5](/compare/claude-fable-vs-claude-fable-5-1)

## Explore More

- [Claude 3.7 Sonnet Thinking profile](/models/claude-3-7-sonnet-thinking)
- [Claude Fable 5.1 profile](/models/claude-fable-5-1)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)