# Claude Fable 5.2 vs DeepSeek V4.1 Flash 1017

> Side-by-side benchmark comparison for Claude Fable 5.2 and DeepSeek V4.1 Flash 1017 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-fable-5-2-vs-deepseek-v4-1-flash
- Last updated: November 9, 2026

- Shared sourced benchmarks: 7
- 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 65.19. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in knowledge, where the averages are 97.6 for Claude Fable 5.2 and 63.6 for DeepSeek V4.1 Flash 1017.
- The biggest single benchmark swing is ProgramBench in Coding, with scores of 85.6% and 29.1%.
- DeepSeek V4.1 Flash 1017 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 | DeepSeek V4.1 Flash 1017 |
|----------|----------|----------|
| Creator | Anthropic | DeepSeek |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 91.19 | 65.19 |
| Benchmarks Covered | 30 | 36 |
| Pricing (input/output) | $8.00 / $40.00 | $0.30 / $1.20 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 90.7 (Estimated · #1/132)
- DeepSeek V4.1 Flash 1017 public-lane score: 61.9 (Supported · #22/132)

| Benchmark | Claude Fable 5.2 | DeepSeek V4.1 Flash 1017 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 67.60% | 42.30% | Claude Fable 5.2 |
| Terminal-Bench-Science 0.1 | 74.6% | Coming soon | Coming soon |
| AutomationBench | 51.4% | 60.5% | DeepSeek V4.1 Flash 1017 |
| OSWorld 2.1 Offline | 89.3% | Coming soon | Coming soon |
| 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 |
| Terminal-Bench 2.1 | Coming soon | 90.6% | Coming soon |
| terminalBench3 | Coming soon | 30% | Coming soon |
| CyberGym | Coming soon | 88.1% | Coming soon |
| ExploitGym | Coming soon | 15.3% | Coming soon |
| HLE w/ tools | Coming soon | 63.9% | Coming soon |
| Agents' Last Exam | Coming soon | 35.4% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 74.5% | Coming soon |
| CWE-bench v1 | Coming soon | 55.0% | Coming soon |
| MazeBench | Coming soon | 1% | Coming soon |
| CWE-bench | Coming soon | 57.6% | Coming soon |

### Coding

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 86.9 (Estimated · #1/158)
- DeepSeek V4.1 Flash 1017 public-lane score: 63.2 (Supported · #15/158)

| Benchmark | Claude Fable 5.2 | DeepSeek V4.1 Flash 1017 | 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% | 77.0% | DeepSeek V4.1 Flash 1017 |
| FrontierSWE v2 | 69.9% | Coming soon | Coming soon |
| ProgramBench | 85.6% | 29.1% | Claude Fable 5.2 |
| FrontierCode 2.0 | 49.1% | 19.3% | Claude Fable 5.2 |
| CursorBench 4.0 | 60.0% | Coming soon | Coming soon |
| ScarfBench | Coming soon | 69.0% | Coming soon |
| Codeforces | Coming soon | 3471.0 | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 90.6% | Coming soon |
| terminalBench3 | Coming soon | 30% | Coming soon |
| NL2Repo | Coming soon | 68.2% | Coming soon |
| OpenHarmony Bench | Coming soon | 60.3% | Coming soon |
| Bug Hunt Bench | Coming soon | 39.1 fixes | Coming soon |

### Reasoning

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 90.7 (Supported · #1/157)
- DeepSeek V4.1 Flash 1017 public-lane score: 58.7 (Estimated · #34/157)

| Benchmark | Claude Fable 5.2 | DeepSeek V4.1 Flash 1017 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-3 | 65.7% | Coming soon | Coming soon |
| ARC-AGI-3 Provider Adapter | 94.90% | Coming soon | Coming soon |
| STEM Professor Bench | 61.8% | Coming soon | Coming soon |
| STEMBench | Coming soon | 2.54 | Coming soon |
| JevBench 1.4 | Coming soon | 4.77 | Coming soon |
| JevBench 1.5 | Coming soon | 6.65 | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 89.8 (Estimated · #1/67)
- DeepSeek V4.1 Flash 1017 public-lane score: 63.9 (Supported · #28/67)

| Benchmark | Claude Fable 5.2 | DeepSeek V4.1 Flash 1017 | Winner |
|-----------|-----------|-----------|--------|
| Chartography (no tools) | 73.4% | Coming soon | Coming soon |
| Chartography (tools) | 91.6% | 83.0% | Claude Fable 5.2 |
| 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 |
| ExtractBench (LlamaIndex) | Coming soon | 87.11% | Coming soon |
| ParseBench | Coming soon | 64.38% | Coming soon |
| BabyVision w/ Python | Coming soon | 92.5% | Coming soon |
| ZeroBench w/ Python | Coming soon | 51.0% | Coming soon |

### Knowledge

- Winner: Claude Fable 5.2
- Claude Fable 5.2 public-lane score: 97.6 (Supported · #1/179)
- DeepSeek V4.1 Flash 1017 public-lane score: 63.6 (Supported · #36/179)

| Benchmark | Claude Fable 5.2 | DeepSeek V4.1 Flash 1017 | Winner |
|-----------|-----------|-----------|--------|
| HLE | 74.2% | 42.6% | Claude Fable 5.2 |
| HLE w/o tools | 73.2% | Coming soon | Coming soon |
| PhysicianBench | 64.4% | Coming soon | Coming soon |
| GPQA | Coming soon | 90.9% | Coming soon |
| GPQA-D | Coming soon | 90.9% | Coming soon |

### Multilingual

- Winner: Not comparable
- Claude Fable 5.2 public-lane score: Coming soon
- DeepSeek V4.1 Flash 1017 public-lane score: Coming soon

| Benchmark | Claude Fable 5.2 | DeepSeek V4.1 Flash 1017 | 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
- DeepSeek V4.1 Flash 1017 public-lane score: 66.5 (Unranked · 3 rankable rows)

| Benchmark | Claude Fable 5.2 | DeepSeek V4.1 Flash 1017 | Winner |
|-----------|-----------|-----------|--------|
| Apex | Coming soon | 65.6% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 67.368% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 26.829% | Coming soon |

## FAQ

### Which is better overall, Claude Fable 5.2 or DeepSeek V4.1 Flash 1017?

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 DeepSeek V4.1 Flash 1017?

The widest category gap is in knowledge, where the averages are 97.6 for Claude Fable 5.2 and 63.6 for DeepSeek V4.1 Flash 1017.

### 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 DeepSeek V4.1 Flash 1017 cover on BenchLM?

DeepSeek V4.1 Flash 1017 currently has 36 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)
- [DeepSeek V4.1 Flash 1017 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-deepseek-v4-1-flash)
- [Claude Fable 5.2 vs Claude Fable 5](/compare/claude-fable-vs-claude-fable-5-2)
- [DeepSeek V4.1 Flash 1017 vs Claude Fable 5](/compare/claude-fable-vs-deepseek-v4-1-flash)

## Explore More

- [Claude Fable 5.2 profile](/models/claude-fable-5-2)
- [DeepSeek V4.1 Flash 1017 profile](/models/deepseek-v4-1-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)