Anthropic: Claude Fable 5

anthropic/claude-fable-5

Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token context window. It is suited for long-running, complex, and asynchronous tasks that previously required frequent human check-ins. It is particularly strong at end-to-end work that would otherwise take a person hours, days, or weeks - taking on problems that are long-running, ambiguous, or highly multi-step. It executes well-scoped tasks with few mistakes, automatically self-correcting through verification loops, and ships with robust safeguards.

Model specifications

Input
text, image, file
Output
text
Context
1,000,000 tokens
Max output
128,000 tokens
Input price
0 / 1M tokens
Output price
$50 / 1M tokens
Released
2026-06-10

Capabilities

  • Streaming
  • Function calling
  • Vision
  • JSON mode

Provider pricing, discounts and data privacy

Compare effective provider prices, published discounts, regions, retention policies, training use, compliance, and privacy links by service tier.

Standard service tier

2 available providers · tier input average 0 / 1M tokens · tier output average $50 / 1M tokens

Anthropic

Tier: Standard · Region: US

Pricing
Input
0 / 1M tokens
Output
$50 / 1M tokens
Cache read
/ 1M tokens
Cache write
2.5 / 1M tokens

No provider discount is currently published.

Data privacy and compliance
Region
US
Zero data retention
No
Data retention
Zero retention
Used for training
No
Data collection
Moderated
No
GDPR compliant
Yes
HIPAA compliant
Yes
SOC 2 certified
Yes
BYOK supported
Yes

Privacy policy · Terms · Official website · Documentation · Status · Support

Claude Platform on AWS

Tier: Standard · Region: US

Pricing
Input
0 / 1M tokens
Output
$50 / 1M tokens
Cache read
/ 1M tokens
Cache write
2.5 / 1M tokens

No provider discount is currently published.

Data privacy and compliance
Region
US
Zero data retention
No
Data retention
30-day retention
Used for training
No
Data collection
Moderated
No
GDPR compliant
No
HIPAA compliant
No
SOC 2 certified
No
BYOK supported
No

Privacy policy · Terms · Official website · Documentation · Support

Frequently asked questions

What is Anthropic: Claude Fable 5?
Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token context window. It is suited for long-running, complex, and asynchronous tasks that previously required frequent human check-ins. It is particularly strong at end-to-end work that would otherwise take a person hours, days, or weeks - taking on problems that are long-running, ambiguous, or highly multi-step. It executes well-scoped tasks with few mistakes, automatically self-correcting through verification loops, and ships with robust safeguards.
How much does Anthropic: Claude Fable 5 cost?
Input costs start at 0 / 1M tokens and output costs start at $50 / 1M tokens. Provider-level prices vary by service tier.
What is the context length of Anthropic: Claude Fable 5?
Anthropic: Claude Fable 5 supports a 1,000,000 token context window and up to 128,000 output tokens.
What capabilities does Anthropic: Claude Fable 5 support?
Anthropic: Claude Fable 5 supports Streaming, Function calling, Vision, JSON mode.
Which providers offer Anthropic: Claude Fable 5?
Anthropic: Claude Fable 5 is available from Anthropic, Claude Platform on AWS.
How do providers handle data privacy for Anthropic: Claude Fable 5?
2 of 2 providers report that customer data is not used for training, and 0 offer zero-data-retention routing. Retention, compliance, and privacy-policy links are listed per provider.

Browse all AI models