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Anthropic · Native Routing

Claude Fable 5

Language Vision Reasoning Tool use

Anthropic's most capable generally available model, for the most demanding reasoning and long-horizon agentic work.

Specifications

Context window
200K tokens
Max output
64K tokens

Best suited for

A frontier model — reach for it on the hardest work where quality matters more than cost.

Complex reasoning Long-horizon agents High-stakes analysis Document & image understanding Step-by-step reasoning Tool use & function calling

Pricing (per million tokens)

US$10.000 input / US$50.000 output

Rates follow Anthropic's official pricing ↗ — last verified 25 Aug 2026.

Price history (USD per 1M tokens)

cheaper pricier wick = input rate
$0 $25 $50 9 Jun 2026: $10 input / $50 output 22 Jun 2026: $10 input / $50 output 1 Aug 2026: $10 input / $50 output 4 Aug 2026: $10 input / $50 output 9 Jun 2026 4 Aug 2026

Model id: claude-fable-5

Request any claude-* model id — routed directly, not through the OpenAI-compatible path.

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