Back
FastAPI vs Express.js
Trust Score comparison · March 2026
VS
Trust Score Δ
10
🏆 FastAPI wins
Signal Comparison
18.4M / moPyPI downloads34M / wk
98 commitsCommits (90d)18 commits
78k ★GitHub stars65k ★
14k q'sStack Overflow146k q's
Very HighCommunityVery High
FastAPIExpress.js
Key Differences
| Factor | FastAPI | Express.js |
|---|---|---|
| License | MIT | MIT |
| Language | Python | JavaScript / TypeScript |
| Hosted | Self-hosted | Self-hosted |
| Free tier | ✓ Yes | — |
| Open Source | ✓ Yes | ✓ Yes |
| TypeScript | — | ✓ |
Pick FastAPI if…
- You're building a Python REST API or microservice
- You want automatic API docs (Swagger/OpenAPI) with zero configuration
- You need async support and high performance for Python
Pick Express.js if…
- You're building a Node.js REST API and want full control
- Your team knows JavaScript/TypeScript well
- You need a lightweight framework with a huge middleware ecosystem
Side-by-side Quick Start
FastAPI
from fastapi import FastAPI
from pydantic import BaseModel
app = FastAPI()
class Tool(BaseModel):
name: str
trust_score: int
category: str
@app.get("/tools")
async def list_tools():
return {"tools": await db.fetch_all("SELECT * FROM tools")}
@app.post("/tools", status_code=201)
async def create_tool(tool: Tool):
id = await db.execute("INSERT INTO tools ...", tool.dict())
return {"id": id, **tool.dict()}
# Run: uvicorn main:app --reload
# Docs: http://localhost:8000/docsExpress.js
import express from 'express';
const app = express();
app.use(express.json());
app.get('/tools', async (req, res) => {
const tools = await db.query(
'SELECT * FROM tools ORDER BY trust_score DESC'
);
res.json(tools.rows);
});
app.post('/tools', async (req, res) => {
const { name, category } = req.body;
const tool = await db.insert('tools', { name, category });
res.status(201).json(tool);
});
app.listen(3000, () => console.log('API on :3000'));Community Verdict
Based on upvoted notes🏆
FastAPI wins this comparison
Trust Score 97 vs 87 · 10-point difference
FastAPI leads on Trust Score with stronger signal data across downloads and community health. That said, the other tool is worth considering if your use case matches its specific strengths above.