FastAPI Guía Best Hosting for FastAPI (2026)
Compare the best hosting platforms for FastAPI. We review Railway, Render, Fly.io, and serverless options with ASGI support and deployment patterns.
FastAPI requires ASGI servers (Uvicorn, Hypercorn) and platforms that support async Python. We've evaluated hosting options from PaaS to serverless.
Por Qué Es Importante
FastAPI's async performance shines with the right hosting. You need platforms supporting ASGI, proper worker configuration, and optional auto-scaling for async workloads.
Consideraciones Clave
ASGI Server Support
FastAPI needs Uvicorn, Hypercorn, or similar ASGI server. Most platforms auto-detect Python and can run Uvicorn.
Worker Configuration
Uvicorn workers, Gunicorn with Uvicorn workers, or multiple containers. Tune for your workload.
Serverless Option
FastAPI works on AWS Lambda (with Mangum), Vercel Functions, and Modal. Good for variable traffic.
Background Tasks
FastAPI has built-in BackgroundTasks, but for heavy work, you need separate workers (Celery, ARQ).
Websockets
If using FastAPI websockets, ensure your platform supports persistent connections.
Nuestras Recomendaciones
Railway
Mejor en General Excelente Soporte SDK OficialRailway auto-detects FastAPI and runs Uvicorn. Add PostgreSQL and Redis with one click. $5/month free credit. Excellent DX.
railway up 
Render
Mejor Plan Gratuito Excelente Soporte SDK OficialRender offers free web services with spin-down. Native FastAPI detection. Good for MVPs and side projects.
render deploy 
Fly.io
Mejor para Global Excelente Soporte SDK OficialFly.io deploys containers globally. Excellent for low-latency APIs. Built-in PostgreSQL. 3 free VMs.
fly launch 
Modal
Mejor Serverless Excelente Soporte SDK OficialModal is built for Python. Run FastAPI as serverless functions with GPU support. Great for ML APIs. Pay per second.
pip install modal && modal deploy 
Vercel
Mejor para APIs Simples Bueno SoporteVercel Functions support Python. Good for simple FastAPI endpoints. Limited execution time. Pair with external DB.
vercel deploy Comparación Rápida
| Servicio | TypeScript | Edge | Plan Gratuito | Tiempo de Configuración |
|---|---|---|---|---|
| Railway | none | ✓ | $5/month credit | 10 min |
| Render | none | ✓ | Free (spin-down) | 15 min |
| Fly.io | none | ✓ | 3 VMs free | 15 min |
| Modal | none | ✓ | $30/month credit | 10 min |
| Vercel | none | — | Generous | 5 min |
Inicio Rápido
FROM python:3.12-slim
WORKDIR /app
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
COPY . .
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]Patrones de Integración Comunes
Railway + Supabase
FastAPI on Railway, Supabase for database and auth. Simple full-stack setup.
Fly.io Global + Redis
FastAPI on Fly.io edge, Redis for caching, PostgreSQL for persistence.
Modal + ML Models
FastAPI on Modal with GPU workers for ML inference APIs.