Most AI prompts are written the same way people send a text message — short, vague, with a bit of hope. A prompt improver takes that rough draft and rewrites it into something an AI can actually act on. There are a handful of tools built specifically for this job. We tested them and ranked them. Here's what we found.
What does a prompt improver actually do?
A prompt improver is a tool — usually a browser extension or web app — that takes your rough prompt and rewrites it to be clearer, more specific, and better structured. The AI gets a better brief. You get a better response.
Think of it as autocorrect for instructions. You type “summarise this meeting,” and the tool turns it into: “You are an executive assistant. Summarise the following meeting transcript in bullet points, covering decisions made and action items. Keep it under 200 words.” Same intent. Much better output.
Most prompt improvers work in one of two ways:
Template-based — they slot your input into a pre-built prompt structure designed to get consistent results
AI-powered rewriting — they send your prompt to another AI layer that rewrites it contextually
The AI-powered approach tends to produce more natural, flexible improvements — particularly for open-ended tasks. If you want to understand what makes a prompt work in the first place, our guide to writing prompts that actually work covers the fundamentals.
How we ranked them
We judged each tool on five criteria — the things that actually matter if you’re using AI for everyday work tasks and not just tinkering.
Ease of use — can a complete beginner use this without a tutorial?
Browser integration — does it work where you already work, or does it require switching tabs?
Quality of improvements — does the rewritten prompt actually produce better AI responses?
Cost — is it free, or does a paywall limit everyday usefulness?
Cross-tool compatibility — does it work with ChatGPT, Claude, Copilot, and others, or just one platform?
Best prompt improvers, ranked
1. ivee Prompt Improver — our top pick
The ivee Prompt Improver is a free Chrome extension that lives inside your browser. Type a prompt anywhere — ChatGPT, Claude, Copilot, Gemini — hit the button, and it rewrites your prompt before you send it. No tab-switching, no account, no paywall.
What puts it at number one:
Completely free — no account required
Works inside the browser on any AI tool you have open
AI-powered rewriting, not just a rigid template
Built for people new to AI, not power users who already know what they’re doing
Works across writing, analysis, planning, summarising — not locked to one task type
It’s the only tool in this list that ticks all five ranking criteria without compromise.
2. PromptPerfect
PromptPerfect is a web-based tool from Jina AI that optimises prompts for language models and image generators — including Midjourney and Stable Diffusion. If you work across text AI and image AI, it’s a more versatile option than most.
Good for: image generation prompts; multimodal AI workflows
Worth knowing: requires leaving your AI tool to use it, which adds friction. Free tier has usage limits.
3. AIPRM for ChatGPT
AIPRM is a Chrome extension with a large community library of pre-built prompt templates across categories like SEO, copywriting, and customer support. It’s more of a template library than a live rewriter — useful if your tasks follow patterns, less so for one-off requests.
Good for: business users with repetitive, structured tasks in ChatGPT
Worth knowing: works primarily with ChatGPT rather than across all AI tools
4. Asking the AI to improve your own prompt
This is a technique rather than a tool. Before sending your actual request, try this first:
“Improve this prompt so it gets better results: [your prompt]”
It works well for simple tasks and costs nothing. The downside is two steps instead of one, and quality varies by model. Useful occasionally — but it won’t become a seamless daily habit the way a browser extension will.
5. Promptbase
Promptbase is a marketplace where people buy and sell professionally written prompts. Rather than improving your own, you buy one already optimised for a specific task — social media content, product descriptions, and so on.
Good for: users with specific, repeatable AI tasks who want a ready-made solution
Worth knowing: prompts cost money to buy, and quality varies by seller
Getting the most out of a prompt improver
Even the best prompt improver works better when you give it something to work with. A few habits that help:
Start with a real sentence, not a keyword. “Summarise this for my manager” gives the tool more to work with than “summary.” Even a rough instruction beats a blank.
Include the output format you want. If you know you need a numbered list, a table, or something under 150 words, put that in your rough prompt before the tool rewrites it.
Treat the result as a starting point. You can still adjust after the tool has had its run. Prompting is always a back-and-forth.
Let it teach you. After a few rounds, you’ll notice the patterns the tool consistently adds — roles, format instructions, context framing. Those start to become your own instincts, and you’ll need the tool less over time.
If you want to build these skills properly alongside hands-on practice, the ivee AI Masterclass series covers prompting and practical AI use in a format built for non-techies.
FAQs: Prompt improver tools
What is a prompt improver?
A prompt improver is a tool that takes your rough AI prompt and rewrites it to be clearer, more specific, and better structured — so you get a more useful response from any AI tool.
Are prompt improver tools free?
Some are, some aren’t. The ivee Prompt Improver Chrome extension is completely free with no account required. Others like PromptPerfect have free tiers with limits. AIPRM has a free version and paid plans.
Does a prompt improver work with Claude and Copilot too?
The ivee Prompt Improver works in your browser, so it works with any AI tool you have open — ChatGPT, Claude, Copilot, Gemini, and others. Some tools are built for one platform only, so check before you install.
Do I need prompt engineering skills to use one?
No. Prompt improvers are designed to do the technical work for you. You write naturally, the tool handles the structure. They’re particularly useful if you’re new to AI and still building your prompting instincts.
Will a prompt improver make my AI results noticeably better?
Yes, usually. The improvement is most noticeable on complex tasks — writing, analysis, planning. For simple questions the difference is smaller. The more context you give the tool upfront, the better the result.
Ready to build real AI skills?
A good prompt improver handles the structure so you don’t have to. But the more you use one, the more you pick up the patterns yourself — and that’s when AI starts to feel genuinely useful rather than hit-and-miss.
Start with the free ivee Prompt Improver Chrome extension, and if you want to go deeper, the ivee Core AI Programme covers prompting, tools, and practical AI use from scratch — no coding, no jargon.
Book onto one of our AI programmes at ivee and start learning today.
