Anthropic

Claude Fable 5.1

Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual...

claude-fable-5.1

Pricing

~92%

Input: $0.756378 / 1,000,000 tokens
Output: $3.78189 / 1,000,000 tokens
Cache read: $0.018909 / 1,000,000 tokens
Cache write: $0.945473 / 1,000,000 tokens

How pricing works

Discount history

92.4%Nov 8, 03:56 AM UTC

Nov 7, 11:57 PMNov 8, 03:56 AM UTC

Model details

Input: text, image, file
Output: text
Context window: 1,000,000 tokens
Maximum output: 128,000 tokens
Availability: $12.8KUncapped capacity
Updated: 11/8/2026, 3:58:06 AM UTC

Capacity is reserved when your request is accepted.

Capabilities

ChatStreamingWeb searchVisionTool callingReasoningJSON mode

Supported parameters

include_reasoningmax_tokensreasoningreasoning_effortresponse_formatstopstructured_outputstoolsverbosity