Quartzite
Quartzite AI is designed for the creation and streamlining of AI prompts, offering users the ability to quickly draft, iterate, and optimiz...
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What is Quartzite?
Quartzite is an advanced AI chat interface and Prompt IDE designed to help users get the most out of Large Language Models (LLMs). It serves as a unified productivity app that allows interaction with multiple AI models including GPT-5, GPT-4.5, o3-pro, Claude 4.5, Gemini 2.5, DeepSeek, Perplexity AI, Llama 3, and Mistral through a single application. The tool is specifically built for complex tasks, research, learning, strategic thinking, and creative writing.
Key features include an advanced Markdown editor for crafting complex prompts, version history tracking to experiment with iterations, cost preview for token usage estimation, a template repository builder to avoid repetitive prompts, and a Prompt Optimizer that automatically applies best prompt engineering practices. Additional capabilities include variables and CSV data import for rapid template filling, data export in various file formats, model settings access (Temperature, Top P, Top K), draft mode with autosave, and a context manager for managing source access.
Quartzite is ideal for AI researchers, data scientists, developers, content creators, full-stack developers, and teams who require advanced prompt engineering capabilities. It also offers an On-Premise version for privacy-focused teams that needs self-hosted deployment with RBAC, audit logs, SSO authentication, and data sovereignty on their own database.
Quartzite pricing
Pricing model: Paid
Quartzite operates on a pay-per-use model with no subscription fee for the tool itself. The Early Helper Plan costs $3.99/month (discounted from $7.99/month) and includes lifetime price guarantee, unlock all features, onboarding call (optional), and Discord chat access. Users pay only for AI model usage via their own API keys, typically spending $2-3/month on model usage which is cheaper than ChatGPT Plus or Claude subscriptions. The tool does not currently offer buying credits directly through Quartzite - users must bring their own API keys from OpenAI, Google, Anthropic, and other providers.
Quartzite pros
- Access to 12+ AI models in one unified app including GPT-5, Claude 4.5, Gemini 2.5
- Advanced Markdown editor for crafting complex prompts with code snippet support
- Built-in version history to track prompt iterations and compare outputs
- Cost preview feature showing token usage and estimated cost before running prompts
- Prompt Optimizer automatically applies best prompt engineering practices with AI
- Template library builder to eliminate repetitive prompt creation
- CSV data import for rapid creation of multiple prompt versions
- Multiple data export formats for downloading prompts and outputs
- Full model settings control including Temperature, Top P, and Top K
- Draft mode with autosave while writing prompts
- Bring-your-own-API-key model means no subscription fee for the tool itself
- API usage typically costs $2-3/month vs ChatGPT Plus subscription
- Desktop app available for both Mac and Windows
- Encrypted API keys with option to disable cloud-sync for maximum privacy
- On-Premise version available with self-hosted deployment for teams
- RBAC, audit logs, and configurable retention for enterprise use
- SSO ready with major identity providers for secure authentication
- Data sovereignty with own database storage option
- Context manager to control which sources models access
- Multi-reasoning capabilities for exploring complex topics
Quartzite cons
- Requires users to bring their own API keys (no built-in credit purchasing yet)
- No free tier - paid Early Accessed Plan at $3.99/month required
- API key setup may be confusing for beginners without prior experience
- Cloud-sync enabled by default (must manually disable for maximum privacy)
- On-Premise version requires contacting team for demo (not self-service)
- Limited model selection compared to using individual model APIs directly
- Prompt Optimizer free version may have limitations compared to paid
- No native credit purchasing - must manage API billing separately
- Feature requests needed for models not currently supported
- Early Supporter Plan is beta access (features may still be evolving)
Frequently asked questions about Quartzite
Can I use all the models for free?
Quartzite allows you to access all listed models via a unified interface, but you don't cover the cost of model usage. You will pay a little bit to use the various models through your own API keys. However, accessing models this way is way cheaper than a subscription to ChatGPT Plus or similar - on average users spend less than $2-3/month on model usage. The advantage is you don't have to choose one subscription or another but have access to all models.
Do I need my own API key?
Yes, at the moment Quartzite works by bringing your own API key. In the future, they would like to offer the possibility of buying credits directly via Quartzite, but that's not available yet. They provide free support to set up your Quartzite account if you need assistance with getting your API keys.
What's an API key?
An API key is a code (similar to a password) that allows you to interact with some AI models. For example, with the OpenAI API key, you can interact with GPT-4 in other apps such as Quartzite. With an API key, you pay only for your usage of the AI rather than paying for a subscription, which usually results in lower costs compared to tools like ChatGPT Plus.
How is my data handled?
Quartzite AI takes privacy and security seriously. The API keys added via Quartzite are encrypted by default, and your data is safely stored. If you prefer, you can even disable cloud-sync for maximum privacy to have your data stored solely in your browser. Shared data is never used for training.
How is this different from ChatGPT and OpenAI playground?
Quartzite AI gives you access to many more AI models including Claude 3 Opus, Gemini Pro, and Perplexity. Additionally, Quartzite AI offers features not available in ChatGPT including templates, version comparison, markdown editor, variables, cost preview, prompt optimizer, and model settings. These features significantly enhance productivity and improve the experience of working with Language Models.
What AI models are supported in Quartzite?
Quartzite supports Opus 4.5, Gemini 3, GPT-5.1, o3-pro & o3, GPT-5, OpenRouter, DeepSeek, Perplexity AI, Llama 3, Mistral, Claude 4.5, Gemini 2.5, and GPT-4.5. If you don't see a model you use, you can submit a feature request to add it.
Is Quartzite available as a desktop app?
Yes, Quartzite AI is available as a desktop app for both Mac and Windows, providing flexibility to download your prompts and outputs. This gives users extra flexibility compared to browser-only solutions.
What features are included in the Early Supporter Plan?
The Early Supporter Plan at $3.99/month includes: unlocking all features, lifetime price guarantee (locked in forever), optional onboarding call to set up your account, and chat with the team on Discord. This is exclusive early access at a special price that's locked in forever.
Can teams use Quartzite together?
Yes, Quartzite supports team collaboration so multiple users can work on prompts together while managing API expenses. The On-Premise version is specifically designed for teams with features like RBAC, audit logs, configurable retention, SSO authentication, Projects for organizing prompts by team, and a context manager for managing shared resources.
How do I export my prompts and outputs?
Quartzite offers data export functionality that allows you to download your prompts and outputs in various file formats for further use. This feature is part of the core tool and helps users maintain flexibility with their AI-generated content.