LangChain

SDKs & frameworks

Use ChatOpenAI / OpenAIEmbeddings with UltraGPT in LangChain and LangGraph.

Website

Base URL

https://api.ultragpt.pro/v1

API format

OpenAI Chat Completions

Models

Ids, prices & context

Fill the guide with your values

Your API keyModel

Stays in this browser tab — never sent or stored by us. Sign in to create one

Setup

1Install langchain-openai (Python) or @langchain/openai (JS) and pass the base URL https://api.ultragpt.pro/v1.

# pip install langchain-openai
import os
from langchain_openai import ChatOpenAI, OpenAIEmbeddings

llm = ChatOpenAI(model="grok-4.7", base_url="https://api.ultragpt.pro/v1", api_key=os.environ["ULTRAGPT_API_KEY"])
print(llm.invoke("Hello!").content)

embeddings = OpenAIEmbeddings(
    model="qwen3-embedding-8b",
    base_url="https://api.ultragpt.pro/v1",
    api_key=os.environ["ULTRAGPT_API_KEY"],
    check_embedding_ctx_length=False,
)

Tips

Any model id from Models works; suffixes like :online (web search) and :nitro work too.
Give each tool its own key with a spend limit, so usage shows separately in Activity.
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