Welcome to AgentStack — your guide to building AI agents, self-hosting your own stack, and generating independent income with AI.
How I Built a Free AI Prediction Market Monitor
Prediction markets are inefficient by nature. Odds move slower than reality because most traders aren’t watching news 24/7. Information takes time to be priced in. I built a monitor that watches constantly and spots the lag between what happened and what the market still believes. What it does Every 30 minutes, the system: Fetches the top 20 open markets on Polymarket by volume Pulls live headlines from BBC World, BBC Business, CoinDesk, and ESPN Asks an AI to assess whether any market odds lag behind the news Fires a Telegram alert if confidence exceeds 65% The stack Polymarket Gamma API — free, no auth required Groq API — free tier, llama-3.3-70b-versatile model BBC RSS feeds — free, reliable, no rate limits Telegram Bot API — free Python — runs on any Linux VM Total cost: $0/month ...
Self-Hosted AI vs ChatGPT Plus: The Honest Comparison
ChatGPT Plus costs $20/month. That is $240/year. Over three years, that is enough to buy a dedicated mini PC that runs AI locally forever. Let us be honest about when each makes sense. When ChatGPT Plus wins You need GPT-4o vision capabilities regularly You do not want any setup or maintenance You need reliable uptime for client work You use it on mobile constantly When self-hosting wins You run repetitive automated tasks (agents, pipelines, scheduled jobs) You process sensitive data you do not want leaving your network You want to experiment without per-token costs You already have a server or cheap VPS Real cost comparison Setup Monthly Cost Capability ChatGPT Plus $20 GPT-4o, plugins, vision Claude Pro $20 Claude Sonnet, extended context Groq API free tier $0 Llama 3.3 70B, very fast Self-hosted Ollama $0-$5 VPS Llama, Mistral, Phi OpenClaw self-hosted $0 Full agent platform The hybrid approach The smartest move is free tiers for automation plus paid API only when you need frontier model quality for specific tasks. ...
Run Your Own AI Agent Platform for Free in 2026
You do not need to pay $20-$100/month for AI agent services. A $5 VPS or an old PC running Ubuntu can handle a full AI agent platform with Telegram integration, scheduled tasks, web browsing, and more. Here is exactly how I run mine. What you need A Linux server (VPS, home server, or VM) with 2GB RAM or more Docker installed 30 minutes The stack OpenClaw is a self-hosted AI agent gateway that connects your LLM of choice to Telegram, runs scheduled jobs, manages memory, and exposes a clean dashboard. ...