Prompt Studio

Prompt Studio is a dedicated workspace for prompt engineering — designed for people who treat prompts as first-class artifacts rather than throwaway text. It runs entirely on your Mac with no cloud dependency, keeping your prompts private by default.

What it does

• Versioned prompt library — organize, tag, and track changes to prompts over time
• Tone and output profiles — test the same prompt with different personas and output formats
• Evaluation suites — run structured tests to compare prompt performance
• Completely offline — no accounts, no telemetry unless you opt in
• Native macOS experience — built in Swift, feels like it belongs on your Mac