Quartzite

Quartzite is an advanced chat interface designed for users who want to leverage the power of leading Language Models within a single application. It offers access to top AI models like Opus 4.5, Gemini 3, GPT-5.1, DeepSeek, Llama 3, and more. Users benefit from features such as a markdown prompt editor, prompt version history, cost previews, template libraries, prompt optimizer, variable and data handling, and data export in various formats. The platform is suitable for developers, researchers, and anyone seeking efficient, multi-model AI interactions.