Claude Fable 5.2

anthropic/claude-fable-5-2

Anthropic model for demanding reasoning, coding, and long-running agentic work, with broad availability and additional cybersecurity and biology safeguards. Adaptive thinking is always enabled; text and image input, text output. Requires 30-day data retention unless Anthropic expressly authorizes zero data retention.

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Context window: 1M
Input: Text · Image
Output: Text
Released: 2026-11-09

Max output: 128K
Knowledge cutoff: 2026-06
Capabilities: Reasoning

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Performance

Overall capability

78.1/100

Coding: 85.0
Reasoning: 84.4
Professional work: 66.6
Knowledge & language: 82.0


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AA-OmniscienceClaude Fable 5.2 (Max, Default Fallback)	Knowledge & language	Artificial Analysis	2026-11-10

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ModelRegistry · Catalog updated 2026-11-10