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Head-to-head

Claude Fable 5.1 vs DeepSeek V3 (Thinking)

As of October 25, 2026, Claude Fable 5.1 leads DeepSeek V3 (Thinking) on the Analyzer Index, 93.7 to 82.0.

Normalized scores are min-maxed per benchmark across all models we track (0–100). Open the interactive compare view to add benchmarks to the radar chart or pull in more models.

Claude Fable 5.1
Anthropic
DeepSeek V3 (Thinking)
DeepSeek
At a glanceClaude Fable 5.1DeepSeek V3 (Thinking)
Analyzer Index93.7 (6/13)82.0 (4/13)
Blended price$20.00/M$0.50/M
Cheapest hostmaker's API$0.44/M
Context1.0M128k
Output speed—25 tok/s
Time to first token—1.73 s
BenchmarkClaude Fable 5.1DeepSeek V3 (Thinking)
Chatbot Arena Elo

Arena

SWE-bench Verified

SWE-bench

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Output Speed

Speed

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Time to First Token

TTFT

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Rolling Contamination-Controlled Average

Rolling Avg

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Rolling Data Analysis

Data Analysis

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SimpleQA Verified

SimpleQA

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OTIS Mock AIME 2024-2025

OTIS AIME

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Humanity's Last Exam

HLE

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ARC-AGI 2

ARC-AGI 2

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Aider Polyglot

Aider

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Frontier Composite

Frontier

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Output Stability

Stability

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Format Adherence

Format

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Recovery Rate

Recovery

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Safety Handling

Safety

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Methodology matches the main AI Model Analyzer About page.