ChatAnthropic Compatibility with Anthropic Bedrock SDK (from anthropic import AnthropicBedrock)

[bibibibibit]

Checked

• I searched existing ideas and did not find a similar one
• I added a very descriptive title
• I've clearly described the feature request and motivation for it

Feature request

Please align the ChatAnthropic API interface with Anthropic's official Bedrock API implementation to ensure complete compatibility between the two services.

Motivation

Anthropic's official SDK provides an elegant solution where developers can switch between direct API access and AWS Bedrock by simply changing the client initialization.
https://docs.anthropic.com/en/api/claude-on-amazon-bedrock#accessing-bedrock
However, LangChain's current implementations of ChatAnthropic and ChatBedrock require different parameter structures for:

• Cache configuration
• Extended thinking configuration
• Streaming formats for thinking summaries
• Other configuration parameters

This forces developers to maintain different code paths depending on which backend is being used, eliminating the clean abstraction that Anthropic's SDK provides.

Proposal (If applicable)

No response