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FastAPI vs Spring Boot

Trust Score comparison · March 2026

FastAPI
97
Trust
Excellent
View profile
VS
Trust Score Δ
32
🏆 FastAPI wins
Spring Boot
65
Trust
Fair
View profile

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

FactorFastAPISpring Boot
LicenseMITApache 2.0
LanguagePythonJava
HostedSelf-hostedSelf-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/docs
Spring 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.