Claude Sonnet 5.5
- API model IDs
- claude-sonnet-5-5
- Context window
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Released
- 2026-09-28
- Lifecycle
- active, retires not sooner than 2027-09-28
- License
- proprietary
Lifecycle verified 2026-10-14 (0 days ago). Source
Data handling
- Trains on API data by default
- No
- Retention
- 30 days
- Zero data retention
- on-request
- 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.
Verified 2026-09-08 (36 days ago). Source 1, Source 2, Source 3, Source 4, Source 5 Subprocessors
Pricing snapshot
$2 input, $10 output, per million tokens. Cached input $0.1 per million tokens. Batch requests are 50% off.
This is a snapshot verified on 2026-10-14, 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-sonnet-5-5
- bedrock · anthropic.claude-sonnet-5-5
- vertex · claude-sonnet-5-5
- azure · claude-sonnet-5-5 Microsoft Foundry deployment name.
Cache reads on this model are priced at 5% of the base input price, not the standard 10%. On the Message Batches API it supports up to 300,000 output tokens with the output-300k-2026-03-24 beta header.