LangChain Integration

LangChain supports custom model services through OpenAI-compatible client configuration.

Python Example

from langchain_openai import ChatOpenAI
import os

llm = ChatOpenAI(
    model="gpt-4o",
    api_key=os.environ["ROUTEAPI_KEY"],
    base_url="https://www.routeapi.ai/v1",
)

response = llm.invoke("Introduce RouteAPI in one sentence")
print(response.content)

Recommendations

• Verify the model and Token with cURL first.
• Then connect LangChain.
• If you use tools or structured output, confirm that the selected model supports the capability.