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FastAPI vs Spring Boot
Trust Score comparison · March 2026
VS
Trust Score Δ
32
🏆 FastAPI wins
Signal Comparison
18.4M / moPyPI downloads42M / mo
98 commitsCommits (90d)428 commits
78k ★GitHub stars74k ★
14k q'sStack Overflow187k q's
Very HighCommunityVery High
FastAPISpring Boot
Key Differences
| Factor | FastAPI | Spring Boot |
|---|---|---|
| License | MIT | Apache 2.0 |
| Language | Python | Java |
| 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 Spring Boot if…
- You're building a Java backend service or REST API
- Your organization has a Java-first engineering culture
- You need enterprise features: security, transactions, JPA, messaging
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/docsSpring Boot
@RestController
@RequestMapping("/api/tools")
public class ToolController {
@Autowired
private ToolService toolService;
@GetMapping
public List<Tool> getAllTools() {
return toolService.findAll();
}
@PostMapping
@ResponseStatus(HttpStatus.CREATED)
public Tool createTool(@RequestBody @Valid CreateToolRequest req) {
return toolService.create(req);
}
}
# application.yml
spring:
datasource:
url: ${DATABASE_URL}Community Verdict
Based on upvoted notes🏆
FastAPI wins this comparison
Trust Score 97 vs 65 · 32-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.