---
schema_version: "1"
id: 9cc39aa3828c5c5c2ac06f5557db6698b7208381162838eef5210f434786d454
title: Prepare for Claude Sonnet 4 Reroute Date
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/release-notes/262-0-0/rn_einstein_models_claude_sonnet_4_reroute.md
canonical_url: https://help.salesforce.com/s/articleView?id=release-notes.rn_einstein_models_claude_sonnet_4_reroute.htm&release=262.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 7e04db233c0cad4d20434e752a4fd4f468de5354e25a417b122bca30c7793c0b
description: Claude Sonnet 4 model requests will be rerouted to Claude Sonnet 4.6 on May 26, 2026 because Claude Sonnet 4 is in the Legacy state on Amazon Bedrock. We recommend that you test your prompts and apps with the new model in Prompt Builder and AI Models as soon as possible, because expected responses can change.
products:
  - Cross Cloud
release: "262"
---
# Prepare for Claude Sonnet 4 Reroute Date

Claude Sonnet 4 model requests will be rerouted to Claude Sonnet 4.6 on May 26, 2026 because Claude Sonnet 4 is in the Legacy state on Amazon Bedrock. We recommend that you test your prompts and apps with the new model in Prompt Builder and AI Models as soon as possible, because expected responses can change.

**Where:** This change applies to Lightning Experience in Enterprise, Performance, and Unlimited editions with Foundations or Agentforce 1 editions.

**When:** Claude Sonnet 4 requests are rerouted on May 26, 2026.

#### See Also

- [_Amazon Bedrock_: Model lifecycle](https://docs.aws.amazon.com/bedrock/latest/userguide/model-lifecycle.html)
- [_Amazon Bedrock_: Understanding Amazon Bedrock model lifecycle](https://aws.amazon.com/blogs/machine-learning/understanding-amazon-bedrock-model-lifecycle/)
- [_Salesforce Help_: Large Language Model Support](https://help.salesforce.com/s/articleView?id=ai.generative_ai_large_language_model_support.htm&language=en_US)
- [_Salesforce Help_: Prepare for Model Deprecation and Rerouting](https://help.salesforce.com/s/articleView?id=ai.generative_ai_model_deprecation_rerouting.htm&language=en_US)