LangChain

Base URL to paste

Paste exactly one of two formats — wrong URL yields 404 (not 401).

https://vietrouter.com.vn

Prerequisites

1. pip install langchain-anthropic langchain-openai

Recommended model: claude-fable-5

Quick way — command / config

from langchain_anthropic import ChatAnthropic

llm = ChatAnthropic(
    model="claude-fable-5",
    anthropic_api_key="sk-mtm-...",
    anthropic_api_url="https://vietrouter.com.vn",
    max_tokens=1024,
)
print(llm.invoke("Hello!").content)

Where to place file / fill Settings

ANTHROPIC_API_KEY + ANTHROPIC_BASE_URL hoặc truyền vào constructor.

Verify connection

1. Chạy invoke một lần

Troubleshooting

Related

LlamaIndex · Langflow