Anthropic

Model Profile

Claude Fable 5

AnthropicAI Chat

Anthropic's most capable widely released model, excelling at advanced reasoning, nuanced writing, and careful analysis.

Provider

Anthropic

Workflow

AI Chat

Key features

4

About Claude Fable 5

Claude Fable 5 is Anthropic's most capable widely released model, built for advanced reasoning, deep analysis, polished writing, and complex multi-step work. It uses adaptive thinking and supports a one-million-token context window. On Unify, Fable is available alongside Opus, Sonnet, and other leading AI models.

Key Features

01

Advanced reasoning

02

Polished prose

03

Deep analysis

04

Adaptive thinking

Best For

01

Advanced reasoning

02

Complex research & synthesis

03

Long-form writing

04

Large document and codebase analysis

Technical Specifications

ProviderAnthropic
Model VersionClaude Fable 5
Input TypesText, Images, Documents
Context Window1M tokens
PricingPay per use

Pros

Anthropic's highest widely released capability

Adaptive thinking

1M context window

Strong writing and analysis

Cons

Premium pricing

Can be overly cautious

May be slower on complex requests

How to Use Claude Fable 5

01

Sign Up Free

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02

Select Claude Fable 5

Choose Claude Fable 5 from the model selector in the chat interface.

03

Start Creating

Enter your prompt and let Claude Fable 5 generate amazing results.

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Popular Use Cases

Frequently Asked Questions About Claude Fable 5

What is Claude Fable 5 best for?+
Fable 5 is best for demanding reasoning, research, writing, coding, and large-context tasks where maximum capability matters.
How does Fable compare with Opus?+
Fable is Anthropic's top widely released capability tier, while Opus 4.8 remains a frontier model with lower API pricing.
Can Fable handle long documents?+
Yes. Claude Fable 5 supports a one-million-token context window.

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