Type normally. Click Rewrite. Send the better version.

Better answers on ChatGPT, Claude, Gemini and Perplexity, plus VS Code and MCP — without learning prompt engineering.

Launching soon on Chrome. Get one email, the day it’s live.

Or try a rewrite right here first
0

Free rewrites a month

No card, no trial, no expiry. Type any prompt into the box and the real engine rewrites it — right here.

Works where you already type

Chrome extensionThe Rewrite button, next to Send
ChatGPTClaudeGeminiPerplexity
Developer surfacesSame engine, same credits
VS CodeCursorClaude CodeMCP

What should we ask ChatGPT?

Type it the lazy way. PrePrompt rewrites it before it’s sent.

Live engine — free to try, no sign-up

Same chat box. Better question. Better answer.

Prompt engineering, applied automatically. Five real rewrites, marked up to show what PrePrompt added before Send: the task, the context, the format and the constraints.

You type38 words

write a linkedin post about leaving my senior PM role at a big tech company to start my own ai startup. want it to feel honest, not like every other 'i quit my job' founder post out there.

PrePrompt sends79 words

Write a LinkedIn post announcing my departure from a senior PM role at a major tech company to launch my own AI startup. The tone should feel authentic and genuinely reflective — avoiding the clichéd tropes of typical 'I quit my job to become a founder' posts (calling it a 'leap of faith', generic gratitude, or hype). Focus on honest insight into why this move made sense for me, what I actually learned, and what I'm genuinely excited about.

Real outputs from the PrePrompt engine, annotated by us. Your own prompt, live, is in the box above.

Your AI isn’t missing intelligence. It’s missing context.

Most generic AI answers aren’t an AI problem — they’re a prompt problem. Every vague prompt is missing the same three things.

A typical prompt

write me a marketing plan

  1. for a two-person B2B SaaS launching in May
  2. within what limits?
  3. in what shape?

Prompt engineering, done for you — before you hit Send.

Three steps. Same chat box.

PrePrompt sits next to the Send button on every chat you use. You do the typing, PrePrompt does the rewriting, the model does the answering.

  1. 1

    Type as usual

    help me plan a launch

    Rewrite

    Open ChatGPT, Claude, Gemini or Perplexity and type the way you always do. PrePrompt reads only the text in the chat box — nothing else on the page.

  2. 2

    Click Rewrite

    help me plan a launch

    Rewriting…

    The PrePrompt button sits next to Send. One click adds the structure, specificity and context the model needs to give you a useful answer.

  3. 3

    Send the better one

    Plan a product launch for a B2B tool. Audience: technical founders. Give 3 channels, a 30-day timeline and one metric to watch.

    Rewrite

    Seconds later the rewrite lands in the same box. Hit Send. Don’t like it? Undo puts your original back.

One engine. Every surface you prompt in.

The same engine powers the Chrome extension, the VS Code extension and MCP — so ChatGPT, Claude, Gemini, Perplexity, Cursor and Claude Code all get the same upgraded prompt.

PrePrompt engine
ChatGPT
Claude
Gemini
Perplexity
Cursor
Claude Code
MCP

Marketers, founders, devs, students — same fix.

Four kinds of people. Four kinds of vague prompt. One Rewrite button. See if you recognise yourself.

Marketer
Sounds likewrite a marketing plan

You ask for a brief and get a wall of platitudes

It returns 800 generic words. You spend more time re-prompting than writing.

PrePrompt adds the audience, channels, output format and timeline you forgot. One Send instead of five.

Founder
Sounds likedraft our investor update

You context-switch between every chat all day

Half of every reply is wrong because you didn’t say which company, which week, or what you’ve already tried.

The rewrite pulls in the structure the model needs — without you re-typing the same setup five times.

Developer
Sounds likefix this bug

Three-word prompts aren’t getting it done

You get a generic answer that doesn’t know your stack, your file, or your repro steps.

PrePrompt expands it into a specific request — stack, file, repro, expected output. Same effort, real answer.

Student / researcher
Sounds likeexplain transformers

Your prompts don’t sound like the ones in the guides

You’ve read prompt-engineering advice and still don’t know what to type. The blank box is the hardest part.

Every rewrite is a worked example — you see what a good prompt looks like for your own question.

By default, only the prompt you choose to rewrite leaves your browser.

The extension does one thing on click — send your prompt to PrePrompt’s rewriter and put the result back in the same box. Analytics events never include your prompt text. No DOM crawling, no surprise data trail.

Diagram: of everything in your browser, only the prompt box is sent — to the PrePrompt engine, which makes one call to the Anthropic API and keeps a usage record, not the prompt, for your dashboard.

Install where you prompt. Keep prompting.

The Rewrite button lands next to Send on the chat sites you already use. Nothing to learn, nothing to switch to.

  • 30 rewrites every month, free
  • ChatGPT, Claude, Gemini and Perplexity
  • Undo any rewrite in one click
  • No card, no trial, no expiry

Launching soon on Chrome. Join the list and we’ll email you the day it’s live.

One email at launch · No spam · Free plan included

PrePrompt for Chrome$0 · free plan included
  1. 01Add to ChromeOne click from the Chrome Web Store, at launch
  2. 02Sign inUnlocks your 30 free rewrites a month
  3. 03Open any chatThe Rewrite button is waiting next to Send

Working in an editor? VS Code extension — private beta.

The same engine inside your editor, on the same credits as your Chrome extension. Join the developer waitlist and we’ll email the install link when it opens.

Free for casual. Pro when you live in prompts.

Every plan includes the rewriter on ChatGPT, Claude, Gemini and Perplexity. Plans differ in monthly credits and support.

Annual: 2 months free

Free

$0

Rewrite your prompts on ChatGPT, Claude, Gemini and Perplexity. No card required.

  • 30 rewrites / month
  • All four LLM sites
  • Dashboard + usage history
  • Per-site enable / disable
  • Community support

Developer

Recommended
Price revealed at launch

Revealed at launch

For people who prompt every day. 500 credits monthly. Unlimited local checks.

  • Everything in Free
  • 500 credits / month
  • Unlimited local checks (pass / clarify / secret scan)
  • Top-ups — coming soon
  • Email support

Pro

Price revealed at launch

Revealed at launch

For people who live in prompts. 1,500 credits, priority support. Larger top-ups and premium model access coming soon.

  • Everything in Developer
  • 1,500 credits / month
  • Premium model access — coming soon
  • Larger top-up packs (1,500 / 5,000) — coming soon
  • Priority support

A credit is used per powered rewrite (Haiku = 1 credit; Sonnet = 5, coming soon). How credits work

TeamPilots available

$20/seat/month · 3-seat minimum · pooled credits across the team. Founder-led pilots only for now — the public team workspace launches once the admin dashboard ships.

Email us

The eight we get the most.

Something else? hello@preprompt.org

PrePrompt is a prompt-engineering engine that rewrites your prompt before you hit Send. It powers a free Chrome extension (on ChatGPT, Claude, Gemini, and Perplexity), a VS Code extension, and an MCP server for Cursor and Claude Code. You type as usual; the PrePrompt button next to Send replaces what you typed with a structured, specific version in a few seconds. You then send the better one.

From the blog.

Why AI answers come back generic, and how to fix the prompt. All posts