Turn raw ideas into high-performance prompts. Score, refine, compare versions and build a library you actually reuse — across the AI tools you already work with.
A studio designed around the real prompt-engineering workflow — from spark to ship.
Turn a one-line idea into a structured, model-ready prompt with objectives, constraints and output format.
Paste any prompt and get a sharper, less ambiguous, model-tuned rewrite — instantly.
Adjust tone, verbosity, creativity, audience and role with tactile sliders.
Side-by-side diffing with quality scoring so you always ship the best variant.
A curated, searchable home for every prompt you save — tagged, favorited, reusable.
Every edit is a checkpoint. Restore, label or duplicate any version in a click.
Native DeepSeek API plus every free model on OpenRouter — switch any time, your prompts stay yours.
Prompt Garage is a web-based prompt engineering workspace for anyone who works with large language models. It gives you tools to generate, optimize, refine, score, compare and organize prompts across DeepSeek, Llama, Gemini, Qwen, Mistral and every free model on OpenRouter — in one studio, with your own API keys.
Prompt Garage is a web-based prompt engineering workspace that helps you generate, optimize, refine, score and organize prompts for large language models. It supports DeepSeek, Llama, Gemini, Qwen, Mistral and other models through DeepSeek and OpenRouter.
Prompt Garage works with DeepSeek V3, DeepSeek R1, Llama 3.3 70B, Gemini 2.0 Flash, Qwen 2.5 72B, Mistral Small 3.2 and every free model available on OpenRouter. You can switch models at any time without losing your prompts.
Yes. Prompt Garage is free to sign up and use. You bring your own DeepSeek and OpenRouter API keys, so model usage is billed by those providers at their standard rates — OpenRouter offers many free models.
Paste any prompt into the Optimize tool. Prompt Garage rewrites it for clarity, structure, specificity and constraints, then scores the result so you can compare it side-by-side against your original before saving to your library.
Prompt engineering is the practice of designing inputs to large language models so they produce reliable, high-quality outputs. It combines clear role framing, structured instructions, explicit constraints and evaluation criteria — all of which Prompt Garage builds in by default.
