AI tools don't require massive budgets. Here's how we built three production AI products using entirely open-source stacks and free-tier cloud services.
Irus AI — Personal Command Center
Built with LangChain, vector embeddings, and OpenAI API. Features live search, document intelligence, and long-term memory — all running on Render's free tier.
Digital Lens — News Intelligence
Real-time news aggregation with sentiment analysis powered by Hugging Face transformers. Deployed on Vercel with edge functions for sub-100ms responses.
Builder AI — Portfolio Generator
AI-powered site generator that takes user inputs and produces a live, responsive portfolio in seconds. Uses ONNX Runtime for client-side inference.
The Free-Tier Stack
| Service | Tool | Cost |
|---|---|---|
| Hosting | Vercel / Render | $0 |
| Database | Neon PostgreSQL | $0 |
| AI Models | Hugging Face + OpenAI | $0-$5/mo |
| CDN/WAF | Cloudflare | $0 |
| Monitoring | Grafana Cloud | $0 |
Key Takeaway
Open-source AI has reached production quality. The bottleneck is no longer technology — it's imagination and execution.