Uvicorn vs Hypercorn

Side-by-side — pricing, strengths, tradeoffs, and fit.

Uvicorn

Lightning-fast ASGI server using uvloop and httptools.

Hypercorn

ASGI and WSGI server based on Hyper libraries inspired by Gunicorn.

At a glance

Open SourceFree Tier
● Established·From $0
Open SourceFree Tier
● Established·From $0

Overview

One-liner

Lightning-fast ASGI server using uvloop and httptools.

One-liner

ASGI and WSGI server based on Hyper libraries inspired by Gunicorn.

Maturity

Established

Maturity

Established

Open source

✓ Yes

Open source

✓ Yes

Pricing

Free tier

✓ Available

Open source — free to use

Free tier

✓ Available

Open source — free to use

Starts at

$0

Starts at

$0

Model

Flat rate

Model

Flat rate

Enterprise

✕ None

Enterprise

✕ None

Best for

✓ Best for

Teams building fast, asynchronous web applications with Python frameworks like FastAPI or Starlette
Developers needing a lightweight ASGI server for rapid development and deployment cycles
Projects requiring high performance and low latency in serving HTTP requests

✓ Best for

Developers looking to deploy highly performant Python web applications with HTTP/2 support
Teams needing a drop-in replacement for Gunicorn with additional optimizations and features

Not ideal for

✕ Not for

Applications that require real-time streaming capabilities beyond what ASGI can offer
Teams looking for a full-featured web application framework rather than just an ASGI server

✕ Not for

Projects requiring cloud-hosted server solutions
Applications that do not require high concurrency or performance optimization

Strengths

↑ Strengths

High performance with uvloop and httptools
Built for ASGI applications
Lightweight and easy to integrate
Supports hot reloading for development

↑ Strengths

High performance ASGI and WSGI server
Based on Hyper libraries for efficient HTTP/2 support
Inspired by Gunicorn, offering similar configuration options

Weaknesses

↓ Weaknesses

Limited to ASGI-compatible applications
Requires a deep understanding of ASGI to troubleshoot issues
Documentation lacks comprehensive examples for complex setups

↓ Weaknesses

Limited documentation and examples
Complex configuration options can be overwhelming
Performance issues under heavy load in certain scenarios
Small and less active community compared to alternatives like Gunicorn
Full Uvicorn profile →Full Hypercorn profile →