Comparing
Async http client/server framework (asyncio)
Official MongoDB driver for Python — insert, query, update, and aggregate documents with a Pythonic API.
| Metric | aiohttp | pymongo |
|---|---|---|
| Ecosystem | Python | Python |
| Difficulty | Beginner ✓ | Intermediate |
| Weekly downloads | 0 | 3.5M↑ |
| Latest version | v3.13.5 | v4.10.1 |
| Recipes | 1 | 2↑ |
aiohttp only
Shared
pymongo 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.
Applications already using MongoDB, document-oriented data (nested objects, variable schemas), rapid prototyping where schema flexibility matters, storing unstructured data like logs or events.
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 strong ACID transactions across many documents (use PostgreSQL), when your data is highly relational, or when you want an ORM-style interface (use Motor + Beanie for async).
aiohttp
pymongo