Compare · ModelsLive · 2 picked · head to head
Claude Fable 5.1 vs DeepSeek V4.1 Flash 1017
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Fable 5.1 wins on 9/10 benchmarks
Claude Fable 5.1 wins 9 of 10 shared benchmarks. Leads in reasoning · knowledge · math.
Category leads
agentic·DeepSeek V4.1 Flash 1017reasoning·Claude Fable 5.1knowledge·Claude Fable 5.1math·Claude Fable 5.1general·Claude Fable 5.1
Hype vs Reality
Attention vs performance
Claude Fable 5.1
#28 by perf·#6 by attention
DeepSeek V4.1 Flash 1017
#41 by perf·#4 by attention
Best value
DeepSeek V4.1 Flash 1017
112.1x better value than Claude Fable 5.1
Claude Fable 5.1
2.3 pts/$
$30.00/M
DeepSeek V4.1 Flash 1017
254.9 pts/$
$0.25/M
Vendor risk
Mixed exposure
One or more vendors flagged
Anthropic
$965.0B·Tier 1
DeepSeek
$3.4B·Tier 1
Head to head
10 benchmarks · 2 models
Claude Fable 5.1DeepSeek V4.1 Flash 1017
APEX-Agents
DeepSeek V4.1 Flash 1017 leads by +1.2
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
Claude Fable 5.1
68.6
DeepSeek V4.1 Flash 1017
69.8
ARC-AGI
Claude Fable 5.1 leads by +3.0
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
Claude Fable 5.1
97.5
DeepSeek V4.1 Flash 1017
94.5
ARC-AGI-2
Claude Fable 5.1 leads by +11.9
ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.
Claude Fable 5.1
90.0
DeepSeek V4.1 Flash 1017
78.1
Chess Puzzles
Claude Fable 5.1 leads by +2.1
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
Claude Fable 5.1
45.3
DeepSeek V4.1 Flash 1017
43.2
FrontierMath-Tier-4-v2-Private
Claude Fable 5.1 leads by +41.5
Claude Fable 5.1
87.8
DeepSeek V4.1 Flash 1017
46.3
FrontierMath-Tiers-1-3-v2-Private
Claude Fable 5.1 leads by +19.9
Claude Fable 5.1
94.9
DeepSeek V4.1 Flash 1017
75.0
Mystery Game Puzzles
Claude Fable 5.1 leads by +9.9
Claude Fable 5.1
53.7
DeepSeek V4.1 Flash 1017
43.8
OTIS Mock AIME 2024-2025
Claude Fable 5.1 leads by +0.6
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude Fable 5.1
100.0
DeepSeek V4.1 Flash 1017
99.4
SimpleQA Verified
Claude Fable 5.1 leads by +28.3
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
Claude Fable 5.1
70.8
DeepSeek V4.1 Flash 1017
42.5
WeirdML v3
Claude Fable 5.1 leads by +26.2
Claude Fable 5.1
48.4
DeepSeek V4.1 Flash 1017
22.1
Full benchmark table
| Benchmark | Claude Fable 5.1 | DeepSeek V4.1 Flash 1017 |
|---|---|---|
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 68.6 | 69.8 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 97.5 | 94.5 |
ARC-AGI-2 ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data. | 90.0 | 78.1 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 45.3 | 43.2 |
FrontierMath-Tier-4-v2-Private | 87.8 | 46.3 |
FrontierMath-Tiers-1-3-v2-Private | 94.9 | 75.0 |
Mystery Game Puzzles | 53.7 | 43.8 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 100.0 | 99.4 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 70.8 | 42.5 |
WeirdML v3 | 48.4 | 22.1 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $10.00 | $50.00 | 1.0M tokens (~500 books) | $200.00 | |
| $0.01 | $0.50 | 1.0M tokens (~524 books) | $1.29 |
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