Claude Fable 5.1
anthropic/claude-fable-5.1
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 code generation, and finance and analysis tasks in particular. It also tends to be more concise than Fable 5 in its plans and summaries. We recommend testing it as a direct upgrade wherever you use Fable 5 today, and alongside Opus 5 on reasoning-heavy tasks.
Model specifications
- Input
- text, image, file
- Output
- text
- Context
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Input price
- $10 / 1M tokens
- Output price
- $50 / 1M tokens
- Released
- 2026-09-02
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 $10 / 1M tokens · tier output average $50 / 1M tokens
Amazon Bedrock
Tier: Standard · Region: US
Pricing
- Input
- $10 / 1M tokens
- Output
- $50 / 1M tokens
- Cache read
- $0.25 / 1M tokens
- Cache write
- $12.5 / 1M tokens
No provider discount is currently published.
Data privacy and compliance
- Region
- US
- Zero data retention
- Yes
- 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
Anthropic
Tier: Standard · Region: US
Pricing
- Input
- $10 / 1M tokens
- Output
- $50 / 1M tokens
- Cache read
- $0.25 / 1M tokens
- Cache write
- $12.5 / 1M tokens
No provider discount is currently published.
Data privacy and compliance
- Region
- US
- Zero data retention
- Yes
- 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
Frequently asked questions
- What is Claude Fable 5.1?
- 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 code generation, and finance and analysis tasks in particular. It also tends to be more concise than Fable 5 in its plans and summaries. We recommend testing it as a direct upgrade wherever you use Fable 5 today, and alongside Opus 5 on reasoning-heavy tasks.
- How much does Claude Fable 5.1 cost?
- Input costs start at $10 / 1M tokens and output costs start at $50 / 1M tokens. Provider-level prices vary by service tier.
- What is the context length of Claude Fable 5.1?
- Claude Fable 5.1 supports a 1,000,000 token context window and up to 128,000 output tokens.
- What capabilities does Claude Fable 5.1 support?
- Claude Fable 5.1 supports Streaming, Function calling, Vision, JSON mode.
- Which providers offer Claude Fable 5.1?
- Claude Fable 5.1 is available from Amazon Bedrock, Anthropic.
- How do providers handle data privacy for Claude Fable 5.1?
- 2 of 2 providers report that customer data is not used for training, and 2 offer zero-data-retention routing. Retention, compliance, and privacy-policy links are listed per provider.