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Claude Fable 5.1

Anthropic's most capable model for demanding reasoning and long-horizon agentic work, extending Claude Fable 5 with stronger agentic coding, multistep research, and document work.

anthropic/claude-fable-5-1
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Streaming
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Reasoning
Structured JSON
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Anthropic
Context: 1M5% off
Input
$10$9.5
/M tokens
Cache Read
$0.25$0.2375
/M tokens
Output
$50$47.5
/M tokens
Cache Write 5m
$12.5$11.875
/M tokens
Cache Write 1h
$20$19
/M tokens
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