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Head-to-head

Claude Fable 5 vs Claude Opus 4.7

As of October 25, 2026, Claude Fable 5 leads Claude Opus 4.7 on the Analyzer Index, 93.0 to 82.1.

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
Anthropic
Claude Opus 4.7
Anthropic
At a glanceClaude Fable 5Claude Opus 4.7
Analyzer Index93.0 (5/13)82.1 (8/13)
Blended price$20.00/M$10.00/M
Cheapest hostmaker's APImaker's API
Context1.0M200k
Output speed—47 tok/s
Time to first token—0.73 s
BenchmarkClaude Fable 5Claude Opus 4.7
Chatbot Arena Elo

Arena

Output Speed

Speed

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Time to First Token

TTFT

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FrontierMath Tiers 1-3

FrontierMath

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SimpleQA Verified

SimpleQA

OTIS Mock AIME 2024-2025

OTIS AIME

Humanity's Last Exam

HLE

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ARC-AGI 2

ARC-AGI 2

Terminal-Bench 2

TermBench 2

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Frontier Composite

Frontier

Output Stability

Stability

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Format Adherence

Format

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Recovery Rate

Recovery

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API Success Rate

API OK

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Safety Handling

Safety

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Methodology matches the main AI Model Analyzer About page.