MaxAI

MaxAI provides a collection of free online tools, including various AI-powered utilities for writing, image generation, and prompt creation, alongside tools for PDF, image, file, and text manipulation. It offers a prompt generator that helps users create customized AI prompts for language models like ChatGPT through a guided interface with built-in variables and multi-language support. The platform also features browser extensions and a web app, with options for free and 'Pro' usage.

MaxAI offers a suite of AI tools, including a prompt generator that uses a guided form interface. It categorizes its tools (AI, PDF, Image, File, Text) and offers a 'Pro' tier, indicating user authentication and subscriptions. The prompt generator specifically mentions multi-language support and the ability to customize variables, which aligns with custom prompt templates. While it doesn't explicitly state multi-model integration, it focuses on optimizing for ChatGPT, which is one model. The overall structure and offering align well with the concept's features.