AI Fiesta brings together the world’s most powerful AI models - Grok 4, ChatGPT 5, Gemini 2.5 Pro, DeepSeek, Claude Sonnet 4, Perplexity Sonar Pro, Kimi K2, Qwen 3 Max and Mistral - in one place. Instead of juggling multiple subscriptions and browser tabs, you get all answers side-by-side in a single chat window, plus exclusive features like Prompt Enhancer and Custom Projects.