# anthropic.claude-sonnet-4-5-20250929-v1:0 — Legacy — shutdown April 8, 2027

For anthropic.claude-sonnet-4-5-20250929-v1:0, provider is AWS Bedrock; lifecycle status is Legacy; shutdown / retirement date is April 8, 2027; platform / deployment scope is AWS Bedrock, recorded from its source on 2026-10-16.

- **Provider:** AWS Bedrock _(our reading, not quoted from the source)_
- **Model ID / API name:** anthropic.claude-sonnet-4-5-20250929-v1:0 _(verified: appears in the quote below)_
- **Human-readable model name:** Claude Sonnet 4.5 _(verified: appears in the quote below)_
- **Lifecycle status:** Legacy _(verified: appears in its own passage below)_
- **Shutdown / retirement date:** April 8, 2027 _(verified: appears in the quote below)_
- **Platform / deployment scope:** AWS Bedrock _(our reading, not quoted from the source)_
- **AWS Regions covered:** af-south-1, ap-east-2, ap-northeast-1, ap-northeast-2, ap-northeast-3, ap-south-1, ap-south-2, ap-southeast-1, ap-southeast-2, ap-southeast-3, ap-southeast-4, ap-southeast-5, ap-southeast-6, ap-southeast-7, ca-central-1, ca-west-1, eu-central-1, eu-central-2, eu-north-1, eu-south-1, eu-south-2, eu-west-1, eu-west-2, eu-west-3, il-central-1, mx-central-1, sa-east-1, us-east-1, us-east-2, us-west-1, us-west-2 _(verified: appears in the quote below)_

## What the source says

**Shutdown / retirement date and AWS Regions covered:** The source prints these values inside the passage below but does not name them there. The passage shows where each one appears; what ties them to this record is the position on the page, not anything the passage says.

> Anthropic | Claude Sonnet 4.5 | anthropic.claude-sonnet-4-5-20250929-v1:0 | af-south-1, ap-east-2, ap-northeast-1, ap-northeast-2, ap-northeast-3, ap-south-1, ap-south-2, ap-southeast-1, ap-southeast-2, ap-southeast-3, ap-southeast-4, ap-southeast-5, ap-southeast-6, ap-southeast-7, ca-central-1, ca-west-1, eu-central-1, eu-central-2, eu-north-1, eu-south-1, eu-south-2, eu-west-1, eu-west-2, eu-west-3, il-central-1, mx-central-1, sa-east-1, us-east-1, us-east-2, us-west-1, us-west-2 | October 8, 2026 | April 8, 2027 | January 8, 2027 |

## Where each value comes from

This source states these in separate places, so each value is shown with the passage it comes from.

### Lifecycle status

The source prints this value inside the passage below but does not name it there. The passage shows where it appears; what ties it to this record is the position on the page, not anything the passage says.

> The following models are in the Legacy state with an announced EOL date. Migrate to an Active model before the EOL date.

## Source

- https://docs.aws.amazon.com/bedrock/latest/userguide/model-lifecycle-legacy.html

Last verified: 2026-10-16. Review by: 2026-11-15.
Part of [AI model deprecation and retirement dates by provider](https://referencesource.org/ai-model-deprecation-and-retirement/).