Quartzite

Quartzite is an advanced chat interface designed to help users get the most out of Language Models. It provides access to multiple AI models including Opus 4.5, Gemini 3, GPT-5.1, o3-pro & o3, GPT-5, OpenRouter, DeepSeek, Perplexity AI, Llama 3, and Mistral through a unified interface.

Key Features

• Advanced prompt editor: Craft complex prompts using a Markdown editor, with the ability to save drafts and submit prompts.
• Version history: Track and experiment with different prompt iterations and model configurations.
• Cost preview: Estimate token usage and cost before running a prompt.
• Template repository: Build and manage a library of prompt templates, or use default ones.
• Prompt Optimizer: Automatically apply best prompt engineering practices using AI.
• Variables & data: Fill templates with variables or import CSV data for rapid creation of multiple versions.
• Data export: Download prompts and outputs in various file formats.

How It Works

Users bring their own API key to access models, paying only for usage rather than a flat subscription. The platform offers a unified interface to interact with multiple AI models without needing separate subscriptions.

Who It's For

Quartzite is aimed at users who need to work with multiple AI models and want advanced prompting tools. It is suitable for developers, researchers, writers, and anyone who frequently interacts with language models and wants more control over their prompting workflow.