Comparing
Async http client/server framework (asyncio)
Official Python SDK for the OpenAI API — call GPT-4, DALL-E, Whisper, and Embeddings with a clean async-first interface.
| Metric | aiohttp | openai |
|---|---|---|
| Ecosystem | Python | Python |
| Difficulty | Beginner | Beginner |
| Weekly downloads | 0 | 9.0M↑ |
| Latest version | v3.13.5 | v1.54.0 |
| Recipes | 1 | 3↑ |
aiohttp only
Shared
openai only
Use aiohttp when you need a battle-tested async HTTP client or server, especially in applications that make many concurrent HTTP calls (scrapers, API aggregators) or build lightweight async web services. It has a mature ecosystem and is widely used in production.
Integrating GPT-4/3.5 into apps, generating embeddings for semantic search, transcribing audio with Whisper, generating images with DALL-E, or building agentic workflows with tool calling.
For new async API projects, FastAPI (built on Starlette/uvicorn) has better developer ergonomics, automatic validation, and docs. For synchronous scripts, requests is simpler. httpx offers a compatible API with both sync and async modes if you want flexibility.
When you need to run models locally (use ollama or transformers), when cost is a hard constraint for high-volume tasks, or when you need a specific open-source model.
aiohttp
openai