The best API boilerplates and starter kits across languages and frameworks.
API starter kits and boilerplates save weeks of setup time by providing pre-configured auth, billing, database access, and deployment. Here's an honest comparison across languages and frameworks — each has a genuine sweet spot.
#1FastAPI AI Kit
This kitA Python/FastAPI boilerplate specifically for AI backends. LLM integration, RAG, streaming, token billing, and auth pre-configured. $69 one-time.
Pros
- AI-specific: LLM integration, RAG pipeline, token billing built in
- Python ecosystem — best language for AI/ML workloads
- Async-first FastAPI — ideal for concurrent LLM API calls
- $69 one-time with lifetime updates — lowest cost in this list
Cons
- Python-only — not for JavaScript or Ruby teams
- API-only — no frontend, admin panel, or template rendering
- AI-specific — overkill for non-AI backends
Best for: Teams building AI-powered APIs in Python who want the fastest possible start.
#2ShipFast
A Next.js full-stack SaaS boilerplate with auth, Stripe billing, landing page, and dashboard. JavaScript/TypeScript. $199 one-time.
Pros
- Full-stack: frontend + backend + landing page in one package
- Active community and frequent updates
- Well-designed UI components and templates
Cons
- JavaScript/Node.js — limited AI/ML ecosystem
- Frontend-heavy — the backend API layer is relatively simple
- Not AI-specific — no LLM integration, RAG, or token billing
Best for: JavaScript teams building full-stack SaaS products where the frontend is the differentiator.
#3SaaS Pegasus
A Django-based SaaS boilerplate with team management, subscriptions, and React/Vue frontend. Python. $249+ one-time.
Pros
- Most complete Django SaaS template available
- Team management, roles, and admin panel included
- Multiple frontend options (React, Vue, HTMX)
Cons
- Django's sync-first architecture creates friction for async AI workloads
- Higher price point ($249+) for features you may not need
- Not AI-specific — no LLM integration or token billing
Best for: Teams building traditional SaaS products in Django who need full-stack features.
#4Django Cookiecutter
The most popular free Django project template. Docker, Celery, email, and structured project layout. Free and open source.
Pros
- Free and open source — no cost
- Battle-tested in production environments
- Active community and extensive documentation
Cons
- General-purpose — no AI, billing, or LLM integration
- Django's sync ORM creates async friction
- Requires significant customization for AI use cases
Best for: Teams starting a Django project who want a solid, free foundation.
Our take
The right starter kit depends on your language, framework, and product type. For AI backends in Python, FastAPI AI Kit is purpose-built and the lowest-cost option. For full-stack JavaScript SaaS, ShipFast covers more surface area. For Django SaaS, SaaS Pegasus is the most complete. Don't use a general-purpose boilerplate for an AI backend — the AI-specific plumbing is the hardest and most time-consuming part to build.
If FastAPI AI Kit fits your use case
The production-ready FastAPI + AI boilerplate and starter kit. Skip 60+ hours of setup. JWT auth, LLM integration, RAG pipeline, billing hooks, Docker — ready to deploy.
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