Anthropic with LangChain (System Message)

[oliverbj]

Hi.

In the LangChain docs, it says this about Anthropic's system message:

No System Messages

Anthropic models are not trained on the concept of a "system message". We have worked with the Anthropic team to handle them somewhat appropriately (a Human message with an admin tag) but this is largely a hack and it is recommended that you do not use system messages.

However, since version 2.1, Claude now support system prompts. Can this be updated in LangChain as well?

[openerror]

You can specify system messages via model_kwargs when creating the LLM or Chatbot object. Like this: ChatAnthropic(..., model_kwargs=dict(system='Your system prompt')) here.