Claude Fable 5.1
- API model IDs
- claude-fable-5-1
- Context window
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Released
- 2026-09-01
- Lifecycle
- active, retires not sooner than 2027-09-01
- License
- proprietary
Lifecycle verified 2026-09-08 (0 days ago). Source
Data handling
- Trains on API data by default
- No
- Retention
- 30 days
- Zero data retention
- no
- Residency
- global, us
- HIPAA BAA
- Available
- SOC 2 / FedRAMP
- SOC 2 yes, FedRAMP none
Anthropic's published certifications list for commercial services names ISO 27001:2022, ISO/IEC 42001:2023, and SOC 2 Type I and Type II. It does not name a FedRAMP authorization for the first-party Claude API. This model is a designated Covered Model and requires 30-day data retention, so zero data retention is not available for it unless Anthropic expressly authorizes it.
Verified 2026-09-08 (0 days ago). Source 1, Source 2, Source 3, Source 4, Source 5 Subprocessors
Pricing snapshot
$10 input, $50 output, per million tokens. Cached input $0.25 per million tokens. Batch requests are 50% off.
This is a snapshot verified on 2026-09-08, 0 days ago, not a live price. Confirm on the provider’s pricing page before you budget against it.
Where you can call it
- direct · claude-fable-5-1
- bedrock · anthropic.claude-fable-5-1
- vertex · claude-fable-5-1
- azure · claude-fable-5-1 Microsoft Foundry deployment name.