Claude Fable 5.3 is Anthropic's language model. A large language model in Anthropic's Claude 5 generation, belonging to the Fable tier and designed for nuanced, creative, and conversational tasks.
Specifications
Canonical IDanthropic-claude-5-3-fable
TypeLanguage
StatusActive
CreatorAnthropicAnthropic
Input ModalitiesText
Output ModalitiesText

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Claude Fable 51.0M$10.00$50.00Available
Claude Fable 5.3Current
Claude Fable1.0M$10.00$50.00Available

Other Models

ModelTierReleasedContextInput / 1MOutput / 1M
Claude Sonnet 5.3Sonnet
Claude Sonnet 5Sonnet1.0M$2.00$10.00
Claude Mythos 5Mythos1.0M$10.00$50.00
Claude Opus 4.8Opus1.0M$5.00$25.00
Claude Opus 4.8 FastOpus1.0M$10.00$50.00
Claude Opus 4.7 FastOpus1.0M$30.00$150.00
Claude Opus 4.7Opus1.0M$5.00$25.00
Claude Sonnet 4.6Sonnet1.0M$3.00$15.00
Claude Opus 4.6Opus1.0M$5.00$25.00
Claude Opus 4.5Opus410K$5.00$25.00

Model IDs

anthropic-claude-5-3-fable
anthropic.claude-fable-53