AeternaOS / Products
Coming soon · Productivity · Free → $19/mo

Prompt library · Curated, versioned, ranked

The prompt library that
doesn't ship slop.

Most prompt sites are SEO bait. PromptVault is the opposite: a small, curated library of prompts that have been actually tested at scale across multiple models, with the model + temperature + recent updates documented. Find what works. Save your collection. Stop reinventing.

No spam · We'll only email when PromptVault ships.

What's inside

Quality over quantity.
Always.

Battle-tested only

Every prompt in the library has been run thousands of times across Claude, GPT-4, Gemini. We publish the model + parameters that produced the result.

Versioned + refreshed

Prompts get re-tested when models update. A prompt that worked great on Claude 3 may regress on Sonnet 4 — we catch that and update.

Searchable by job

Find the right prompt by what you're trying to do. 'Write a cold email' returns prompts ranked by recent user success, not by SEO.

Your own collection

Save the prompts that work for your workflows. Tag them. Share specific collections with your team.

Get early access

Waitlist members get full access during the closed beta + a lifetime 50% discount on Pro.

No spam · We'll only email when PromptVault ships.