Claude Fable is Anthropic's language model with a 1.0M context window and up to 128K output tokens, starting at $10.00 / 1M input and $50.00 / 1M output. A Claude LLM alias that always routes to the latest model in the Claude Fable family, providing automatic access to the most current Fable release.
Specifications
Canonical IDanthropic-claude-fable
TypeLanguage
StatusActive
CreatorAnthropicAnthropic
Providers
Context Window1.0M tokens
Max Output128K tokens
Input ModalitiesImagePDFText
Output ModalitiesText
Reasoning Effortsdefault
Release Date · 4 months ago

Capabilities

Input3/5
Text✓
Image✓
Audio·
Video·
PDF✓
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities6/13
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·

Pricing by Provider

US Dollar ($)
Per 1M tokens
ProviderStandard
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Cache Write 5m
$ / 1M
Web Search
$ / request
OpenRouter logo
OpenRouter
~anthropic/claude-fable-latest
$10.00$50.00$0.25$12.50$0.010

Cost Calculator

US Dollar ($)
Preset:

Versions

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

Other Models

ModelTierReleasedContextInput / 1MOutput / 1M
Claude Haiku 5.5Haiku1.0M$0.100$0.500
Claude Sonnet 5.5Sonnet1.0M$2.00$10.00
Claude Opus 5.5Opus1.0M$4.00$20.00
Claude Fable 5.1—1.0M$10.00$50.00
Claude Opus 5Opus1.0M$5.00$25.00
Claude Sonnet 5Sonnet1.0M$2.00$10.00
Claude Haiku 5.5 BatchHaiku—1.0M——
Claude Mythos 5Mythos—1.0M$10.00$50.00
Claude Mythos 5.1Mythos—1.0M$10.00$50.00
Claude Sonnet 5.5 BatchSonnet—1.0M——

Model IDs

~anthropic/claude-fable-latest
anthropic-claude-fable
openrouter/~anthropic/claude-fable-latest