How I Built a Free AI Chatbot With 12+ Models, Voice, Coding, and Image Generation — All for $0

说明与用途

构建了一个免费 AI 助手，整合聊天、搜索、代码执行、图像生成和语音，使用 12+ 免费模型和 Convex 实现实时交互。

问题

Develop a cost‑effective AI assistant that offers advanced features (chat, web search, code execution, image generation, voice, file analysis, multi‑agent collaboration) without subscription fees.

结果

Free AI provides a fully functional, subscription‑free AI assistant with advanced capabilities, achieving 99.9% uptime through multi‑provider fallback and real‑time interactivity via Convex.

工作流

• 1. Set up React + TypeScript frontend with Vite, Tailwind, and Framer Motion.
• 2. Configure Convex backend for real‑time database, serverless functions, and email OTP auth.
• 3. Integrate 12+ free AI models via NVIDIA NIM, Groq, Google Gemini, and OpenRouter.
• 4. Implement model routing: try NVIDIA models, fallback to Groq, then Gemini Flash, then OpenRouter, each with 12‑second timeout.
• 5. Add code execution using Pyodide for Python and sandboxed JavaScript.
• 6. Enable voice with Edge TTS and Web Speech API.
• 7. Add web search using Exa API with source citations.
• 8. Build multi‑agent bot system: planner agent creates task graph, assigns roles (PM, frontend dev, backend engineer, QA, security reviewer), shares workspace, and streams activity to user.
• 9. Deploy and expose free access without signup.
• 10. Iterate based on community feedback.

证据

Free AI — a completely free AI assistant that does what paid tools charge $20/month for.

来源

The system automatically routes requests to the best available model: NVIDIA, Groq, Gemini Flash, OpenRouter.

来源