AI prompt enhancer · free forever

The AI prompt enhancer that scores & rewrites every prompt you type.

AI Prompt Fixer lives inside ChatGPT, Claude, Gemini and Perplexity. It grades your prompt on three quality signals, rewrites the weak ones, and keeps out of your way when your prompt is already good — all in under two seconds.

Or try it live in the browser first
  • No sign-up required
  • First-party usage analytics
  • Works on 4 major chat tools
  • Also in VS Code & Cursor
chat.ai / new message
1
Weak · 1/5
Live score
Specificity
1
Context
2
Format clarity
1
Routed · Groq tier 214 ms
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Coaches your prompts on

0
Major chat tools supported
~0s
From keystroke to score
0
AI providers load-balanced
0
Third-party trackers
Why it stands out

Not a wrapper. A coach with real engineering underneath.

Most prompt tools pipe your text into one LLM and ship the reply. AI Prompt Fixer combines a smart client, a smart router and a smart cache so coaching feels instant and holds up when a provider goes down.

Context-aware refinement

01

The only prompt enhancer that reads your ongoing chat. Up to 6 recent turns are captured from the page DOM so mid-thread rewrites actually reference what you were just talking about.

Real-time auto coaching

02

A floating coach dot watches your chat input. 1.3 s after you pause typing, you get a score and a rewrite without leaving the tab.

Multi-AI model routing

03

Requests are routed across Groq, Google Gemini and Hugging Face, with a complexity-to-tier mapping that picks the fastest capable model.

Follow-up Q&A optimizer

04

Category-aware follow-up questions for coding, writing, image, video, audio, research and analysis — answer them to get a laser-targeted rewrite.

See all features and the code behind them
New · Context-aware refinement

It reads the whole thread, not just your last sentence.

Every other prompt tool rewrites your message in a vacuum. AI Prompt Fixer is the first AI prompt enhancer that understands the conversation you're already in — so "make it shorter" becomes a precise, context-rich rewrite even on turn 12 of a ChatGPT session.

ChatGPT · ongoing thread
I have a Next.js 15 app. Write me an onboarding email when a new user signs up.
Sure — here is a 4-paragraph welcome email covering the value prop, a quick-start checklist, an upgrade CTA, and a support link.
Your next message

live thread3 turns · 412 chars
AI Prompt Fixercontext · ON
Without contexttypical tools

"Please make your message shorter. Could you share what you would like shortened?"

With AI Prompt Fixer context5 / 5

Waiting for context capture…

Routed · context-aware tier+3 quality points
Conversation in progressYou type a vague follow-upContext captured (last 6 turns)Refined with full context

Reads the last 6 turns

01

The extension walks each supported chat's DOM, picks out every user and assistant message, then sends the last six turns along with your new prompt.

Caps every payload

02

Capped at 2,000 chars per message and 8,000 chars total so prompt tokens, latency and cost stay predictable — no blown context windows.

Context-only, never answered

03

Server-side system prompts include a hard contract: use the conversation for understanding only, never reply to, quote or summarise it.

Private by default

04

You can disable context capture from the popup with one tap. When it's off, no conversation data ever leaves your browser.

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See the engineering deep-dive
The pipeline

From keystroke to score in about 2 seconds.

A debounced watcher, a latest-request-wins guard and a complexity router keep the UI feeling instant while the backend picks the right model for the job.

You type0ms

Any chat input

Debounce1,300ms

1.3s pause

Route~200ms

Pick tier + model

Score & rewrite~400ms

Under 2s total

Pipeline healthyTotal: ~2.0sCache hits: <5ms
Open the full technical deep-dive
The three quality signals

Three signals that quietly decide every AI answer you get.

Every prompt you type gets graded from 1 to 5 on three axes. The overall maturity score is their weighted blend.

chat.ai / prompt maturity
Vague · 1.0/5

Weak on all three — no topic, no audience, no output shape.

1.0/5

Specificity

Does the prompt name the exact language, framework, audience or constraint?

1.0/5

Context richness

Does it share enough background — inputs, prior code, edge cases — to do its best work?

1.0/5

Output format

Have you told the model what shape of answer you want — code, JSON, table?

Before & after

Same idea. Twice the useful output.

Here is a real example of what AI Prompt Fixer turns a vague line of text into before it ever reaches the model.

Before · 1 / 5Vague prompt
​
Quality0.0 / 5

No language, no return type, no edge cases. The model has to guess — and will probably guess wrong.

After · 1 / 5Rewritten by AI Prompt Fixer
​
Quality0.0 / 5

Language, signature, behaviour, edge cases and docs are all specified. The answer is useful on the first try.

Also in your editor

Now available for VS Code & Cursor.

Prefer coaching prompts where you write code? The AI Prompt Fixer IDE extension ships the same classify & rewrite pipeline as a native VS Code and Cursor extension — with a JetBrains plugin on the way.

  • VS Code 1.85+
  • Cursor (via Open VSX)
  • JetBrains — coming soon
  • Free & MIT-licensed
Install for VS CodeInstall for CursorJetBrainssoon
See the full IDE walkthrough
Command PaletteVS Code · Cursor
>↵
APF: Open Prompt Fixer
APF: Set Classifier API Key
·

Waiting for input

Run a command to coach a prompt

idle
Classifier healthyAPF · 000%
FAQ

Common questions about the AI prompt enhancer.

An AI prompt enhancer is a tool that analyses the prompt you are about to send to a large language model and rewrites it to be clearer, more specific, and easier for the model to answer well. AI Prompt Fixer is a free AI prompt enhancer that lives inside ChatGPT, Claude, Gemini and Perplexity, scoring your prompt in real time and offering a one-click rewrite.
Yes — and this is what makes AI Prompt Fixer different. When you refine a prompt in the middle of an existing chat, the extension captures up to the last 6 conversation turns (capped at 8,000 characters total and 2,000 characters per message) straight from the page DOM and passes them to our router. The optimizer uses that history purely as context — it never answers or summarises it — so a vague follow-up like "make it shorter" becomes a precise rewrite that actually references what you were just talking about. The feature is on by default and can be toggled off from the extension popup at any time.
Yes. The browser extension and the web demo are free to use. A Pro tier is on the roadmap for teams that need cloud sync, shared prompt libraries and higher API limits, but the core prompt enhancer will stay free forever.
The browser extension currently runs on ChatGPT (chat.openai.com and chatgpt.com), Claude (claude.ai), Google Gemini (gemini.google.com) and Perplexity (perplexity.ai). There is also a native VS Code and Cursor extension for coaching prompts from inside your editor. The underlying prompt quality signals are universal, so they work for any large language model you copy prompts into, including Midjourney, Stable Diffusion, GitHub Copilot and Cursor.
Yes. The VS Code extension is on the Visual Studio Marketplace and the Cursor-compatible build is on Open VSX. A JetBrains plugin (IntelliJ, WebStorm, PyCharm, Android Studio) is on the roadmap and uses the same classify/optimize API as the VS Code extension. See the /ide page for install links and commands.
Prompt journeys from the website and browser extension are stored in our first-party analytics system so customers and super admins can review usage. That includes prompt text, optimized prompts, follow-up answers, and whether the rewrite was used. Your preferences, templates and progress stats still live in your browser storage, and we do not use third-party ad or analytics vendors.
The extension debounces keystrokes by roughly 1.3 seconds, so it only runs after you pause typing. Requests hit an in-memory cache first, so repeated prompts come back in milliseconds. Fresh classifications are routed to the fastest healthy model across Groq, Google Gemini and Hugging Face, with a tier ladder that matches complexity to capability.
Install in under 30 seconds

Stop guessing at your prompts. Start coaching them.

Add AI Prompt Fixer to your browser and get a free, real-time AI prompt enhancer on every major AI chat you already use.

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Free forever · no account · works offline on cache hits