How it works

What this tool does

PsiPi runs your preprint through four AI reviewer personas and an AI editor persona, entirely in your web browser, and gives you back a narrative, referee-report-style critique — built for the natural sciences. Think of it as a fast, brutally specific first read before you send your manuscript somewhere that matters. Because it's AI-generated, treat it as a starting point for revision, not a final verdict.

Step 1 — Get a free Gemini API key

1. Go to aistudio.google.com/apikey.
2. Sign in with any Google account (a personal Gmail account works fine).
3. Click “Create API key”.
4. Copy the long string that starts with “AIza” — that's your key.

This key is free for normal use. You are not asked for a credit card to create one.

Step 2 — Paste it into PsiPi

On the submission page, paste your key into the first field. It is used only to call Google's API directly from your own browser — there is no PsiPi server for it to be sent to, so we never see it, store it, or have any way to retrieve it later.

Step 3 — Upload your preprint

Upload a preprint as a PDF, Word (.docx), or LaTeX (.tex) file — it's extracted to text right in your browser. The title and abstract on your manuscript's own title page are picked up automatically, so there's nothing else to retype.

Step 4 — Target journal (optional)

If you know where you'll eventually submit, type its name — PsiPi checks it against a real public journal registry and, if matched, tells the AI editor persona to weigh your manuscript against that journal's actual standards.

Step 5 — Read the result, download the PDF

You'll see the editor's triage, then each reviewer's comments land live as they finish, then the editor's final synthesis. A “Download PDF” button turns the whole thing into a document you can keep — it's the only thing that persists after you close the tab.