Unverified60% confidenceOpinionExact time

The name "Claude Fable 5.1" may be the community's designation for a certain Claude variant or internal version.

2

Sources

60%

Confidence

Medium-term (~90 days)

Relevance

9/11/2026

First Seen

Valid until: 12/10/2026

Sources

Claude Fable 5.1 Animated Pelican Test: What a Bird Reveals About LLM Capabilities

Related Entities

Claude Fable 5.1model Anthropiccompany

Related Claims

UnverifiedClaude Fable 5.1 belongs to the Mythos tier of the Claude 5 family and shares the same underlying architecture as Claude Mythos 5.1.71% similar UnverifiedClaude Fable 5 is not a product name officially known to be from Anthropic.67% similar

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