Best llm interface AI tools

Open Muse Chat is an advanced multi-model AI chat interface designed for users who leverage various large language models. It connects to any OpenRouter model, offers web search, file uploads (PDFs, images) for context, and provides fine-grained control over model parameters, all within an organized workspace featuring projects and branched conversations.

AI.LS is an elegant and powerful web-based user interface for interacting with advanced AI models like ChatGPT and Gemini. It serves as a superior alternative to standard chat interfaces, offering a free tier, advanced customization options, and support for using your own OpenAI API key for greater control and access.

A privacy-focused AI chat platform that provides a unified interface for leading AI models like GPT-4o and Pixtral. Users connect their own API keys to store, manage, and search conversations locally on their browser. It supports advanced features including PDF chat and image analysis, offering a secure and versatile AI interaction experience.

ChatKit is a refined, unified chat interface for top AI models like OpenAI, Gemini, and Azure. It enhances your workflow with features like web search, prompt templates, voice input, and chat bookmarks, all while prioritizing user privacy with local API key storage and no required login.

Quartzite is an advanced AI prompt IDE and productivity tool that centralizes access to top LLMs like GPT-4, Claude, and Gemini. It helps users write, optimize, and manage complex prompts with features like a template library, version history, cost preview, and a personal document knowledge base, all while reducing API costs.