04-x

04-x is a web-based chat platform that lets you talk to a wide variety of large language models from a single, clean interface. Instead of jumping between different services, you can access models from OpenAI (like GPT-4 and DALL·E 3), Anthropic (Claude 3.5 Sonnet, Opus), Cohere, and a host of open-source models like Llama 3 and Mistral. A key differentiator is its focus on privacy: your API keys, prompts, and the AI's responses are all end-to-end encrypted using a password you set, meaning the service itself cannot access your data.

It works by acting as a secure gateway to these models. You provide your own API keys for services like OpenAI and Anthropic, and 04-x uses them to make requests on your behalf, keeping everything encrypted in transit and at rest. For open-source models, it integrates with Ollama, allowing you to run models directly on your own machine for complete local control. This setup gives you flexibility—you can use powerful cloud models for some tasks and local models for others, all within the same chat history.

This tool is ideal for anyone who values data privacy but wants the convenience of a multi-model AI assistant. Developers can use it to test and compare model outputs for prototyping. Researchers, writers, or students can have confidential brainstorming or tutoring sessions without their queries being stored or analyzed. It's a practical solution for users who want to leverage the best of modern AI without sacrificing control over their information.