Multi-Model Chat IA

I’m looking for an experienced Full-Stack Developer to build a web-based chat application that lets users interact with multiple AI models — such as GPT-4, Claude, Gemini, and Mistral — through a single, modern interface similar to ChatGPT.


Create a clean, fast, and secure multi-AI chat platform where users can easily switch between different AI models and save their chat history — all in one place.
• Chat interface with message history and model selector (GPT-4, Claude, Gemini, Mistral, etc.)
• Backend integration with multiple AI APIs (OpenAI, Anthropic, Google, Mistral)
• User authentication and account system (email or Google login)
• Conversation storage in a secure database
• Basic admin dashboard (view users, usage, API costs)
• Cloud deployment (Vercel, Render, or AWS)
• Clean, documented, and scalable codebase

• Frontend: React / Next.js
• Backend: Node.js (Express/Nest) or Python (FastAPI)
• Database: PostgreSQL or MongoDB


• Secure handling of API keys
• HTTPS and user data protection (GDPR-ready)
• Clear documentation for setup and deployment