Python SDK

python -m pip install --upgrade openai

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["YELU_API_KEY"],
    base_url="https://api.yelu.ai/v1",
    timeout=60.0,
    max_retries=2,
)

completion = client.chat.completions.create(
    model="gpt-4o-mini",
    messages=[
        {"role": "system", "content": "Be concise."},
        {"role": "user", "content": "Explain vector search."},
    ],
    max_completion_tokens=200,
)
print(completion.choices[0].message.content)
print(completion.usage)

response = client.responses.create(
    model="gpt-4o-mini",
    instructions="Answer for a software engineer.",
    input="What is backpressure?",
    max_output_tokens=200,
)
print(response.output_text)

stream = client.chat.completions.create(
    model="gpt-4o-mini",
    messages=[{"role": "user", "content": "Write a short release note."}],
    stream=True,
)
for chunk in stream:
    text = chunk.choices[0].delta.content or ""
    print(text, end="", flush=True)

import openai

try:
    client.models.list()
except openai.AuthenticationError as exc:
    print("Check YELU_API_KEY", exc.status_code)
except openai.RateLimitError as exc:
    print("Back off before retrying", exc.status_code)
except openai.APIConnectionError as exc:
    print("Network or TLS failure", exc.__cause__)
except openai.APIStatusError as exc:
    print("Yelu returned", exc.status_code, exc.response.text)

import asyncio
import os
from openai import AsyncOpenAI

client = AsyncOpenAI(
    api_key=os.environ["YELU_API_KEY"],
    base_url="https://api.yelu.ai/v1",
)

async def main():
    response = await client.responses.create(
        model="gpt-4o-mini",
        input="Give one practical API reliability tip.",
    )
    print(response.output_text)

asyncio.run(main())