Sharkbench

Benchmarking programming languages and web frameworks

FastAPI (Python)

FastAPI is a modern, high-performance web framework for building APIs with Python 3.6+ based on standard Python type hints. It emphasizes speed in both execution and development time, with automatic interactive API documentation generation.

This benchmark tests how fast a framework can perform concurrent HTTP requests, I/O operations, and JSON de/serialization.

OS: Linux/DockerCPU: Ryzen 7 7800X3DLast Updated: 2025-05-04

MedianP99

Framework	Requests per second Indicates how many requests per second the framework can handle. (higher is better)	Latency Indicates how long it takes to process a request. (lower is better)	Stability Indicates how stable the framework is under load: median / P99 latency (higher is better)	Memory Indicates how much memory (RAM) the framework uses. (lower is better)
Python v3.13 / FastAPI v0.108 (Uvicorn)	1185	21.0 ms	21.21 %	41.2 MB
Python v3.12 / FastAPI v0.108 (Uvicorn)	1182	21.3 ms	21.06 %	38.4 MB
Python v3.11 / FastAPI v0.108 (Uvicorn)	1180	21.0 ms	20.98 %	40.0 MB
Python v3.10 / FastAPI v0.108 (Uvicorn)	935	26.6 ms	21.15 %	38.7 MB
Python v3.9 / FastAPI v0.108 (Uvicorn)	810	30.7 ms	20.95 %	37.9 MB
Python v3.8 / FastAPI v0.108 (Uvicorn)	785	31.7 ms	21.13 %	42.2 MB

About Python

Paradigm

Object-Oriented, Imperative, Functional

Execution

Interpreted

Typing

Dynamic

Null Safety

NO

Memory Management

Garbage Collection

Python is a high-level, interpreted programming language known for its simplicity and readability with an emphasis on code clarity. It has an extensive standard library and large ecosystem of third-party packages for various domains. Python is used in web development, data analysis, artificial intelligence, and scientific computing, and is popular in educational settings.

Python web frameworks

How does FastAPI compare other Python frameworks?

MedianP99

Framework	Requests per second Indicates how many requests per second the framework can handle. (higher is better)	Latency Indicates how long it takes to process a request. (lower is better)	Stability Indicates how stable the framework is under load: median / P99 latency (higher is better)	Memory Indicates how much memory (RAM) the framework uses. (lower is better)
Python / FastAPI (Uvicorn)	1185	21.0 ms	21.21 %	41.2 MB
Python / Flask (Gunicorn)	1092	7.7 ms	9.22 %	90.3 MB
Python / Django (Gunicorn)	950	8.8 ms	10.33 %	130.1 MB
Python / Flask (Development Server)	900	33.2 ms	71.62 %	27.5 MB
Python / Django (Development Server)	759	42.0 ms	93.46 %	77.7 MB
Python / Django (Uvicorn)	390	80.2 ms	68.26 %	43.3 MB

Popular web frameworks

How does FastAPI compare to other popular frameworks?

MedianP99

Framework	Requests per second Indicates how many requests per second the framework can handle. (higher is better)	Latency Indicates how long it takes to process a request. (lower is better)	Stability Indicates how stable the framework is under load: median / P99 latency (higher is better)	Memory Indicates how much memory (RAM) the framework uses. (lower is better)
Rust / Axum	21030	1.6 ms	71.96 %	8.5 MB
C# (.NET) / ASP.NET Core	14707	1.2 ms	2.64 %	136.5 MB
JavaScript (Node.js) / Express	5766	5.5 ms	64.50 %	82.5 MB
Go / Gin	3546	1.0 ms	1.14 %	16.7 MB
Python / FastAPI (Uvicorn)	1185	21.0 ms	21.21 %	41.2 MB
Java (Temurin) / Spring Boot (MVC)	1105	1.7 ms	1.67 %	596.8 MB
Python / Flask (Gunicorn)	1092	7.7 ms	9.22 %	90.3 MB
Python / Django (Gunicorn)	950	8.8 ms	10.33 %	130.1 MB
PHP / Laravel	299	101.7 ms	56.47 %	84.2 MB