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anthropic
anthropicAnthropic: Claude Fable 5.1 (batch)
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...
anthropic/claude-fable-5.1:batch
Context Size
1,000K
Input Price
750,000 pts/M
Output Price
3,750,000 pts/M
Architecture
Text
Image
File
Supported Parameters
include_reasoningmax_tokensreasoningreasoning_effortresponse_formatstopstructured_outputstool_choicetoolsverbosity
Details
TokenizerClaude
Max Completion128,000 tokens
Provider Context1,000K tokens
ModeratedYes
CreatedSep 1, 2026