OpenAI Python SDK

The official OpenAI Python SDK (pip install openai): the canonical client for the Chat Completions, Responses, Assistants, Images, Audio, Embeddings, and Batch APIs, with typed models, streaming, retries, and async support. If you call OpenAI from Python, this is almost certainly what you use — 295.9M PyPI downloads/month makes it one of the most-installed Python packages in existence. 31.8k stars, Apache-2.0. It's a thin, faithful client (new API features land here first), not a framework — pair it with LiteLLM or a gateway for multi-provider work.

```bash

pip install openai

export OPENAI_API_KEY="sk-..."

```

```python

from openai import OpenAI

client = OpenAI()

resp = client.chat.completions.create(model="gpt-4o-mini", messages=[{"role": "user", "content": "Hi"}])

print(resp.choices[0].message.content)

```

Docs: platform.openai.com/docs.