FastAPI: Modern Python Web Framework

Quick Facts

Aspect	Details
Purpose	High-performance REST APIs
Speed	On par with Go/Node
Features	Auto OpenAPI docs, validation
Best For	LLM service APIs

Basic Example

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()

class Query(BaseModel):
    text: str

@app.post("/generate")
async def generate(query: Query):
    result = llm_model.generate(query.text)
    return {"response": result}

Resources

• Website
• Docs

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Use when: Building REST APIs for LLM applications.