Fabio AI Chatbot runs on OpenAI, Mistral, Anthropic and Gemini. You need to purchase API tokens from one of these, knowing that the costs represents between 0.22 USD and 1 USD for 100 requests and answers, and knowing that this cost is not included in the subscription.
As AI models, you can use :
OpenAI
✅ gpt-5.4-nano + gpt-5.6-luna (new, fast and cost-efficient)
Google Gemini
✅ gemini-3.1-flash-lite + gemini-3.5-flash
Mistral AI
✅ mistral-large-3
Anthropic — new provider! 🎉
✅ claude-haiku-4-5
✅ claude-sonnet-5