productivity
Best AI Prompt Generators
AI prompt generators are a fading category: the chatbots now follow plain instructions, search interest has halved and the remaining tools are small. What still exists, what each one costs, and what improves an AI's answers now.
Quick answer: The best AI prompt generator for most people is the chatbot they already use: ChatGPT, Claude and Gemini will each draft a prompt for free if you describe what you are trying to do, ask what a good brief would need and answer its questions. Dedicated prompt generators are a fading category. Worldwide search interest in “prompt generator” is about half its 2025 peak on Google Trends, OpenAI is shutting down its own prompt optimizer on 30 November 2026, and the tools that remain are small: the best-rated one, PrettyPrompt, has 142 ratings. If you still want one, Prompt Cowboy is free on the web, PrettyPrompt rewrites inside the chat box, and AIPRM is a library of ready-made templates. No independent benchmark tests any of them.
This page covers tools that write or improve prompts for you: browser extensions and web apps that turn a rough request into a structured prompt, and libraries of ready-made prompt templates. For what a prompt is, see the prompt entry in our AI glossary. For the image tools those prompts go into, see best AI image generators, and for the chatbots themselves, see best AI chatbots.
Which one should you pick?
| If you want | Pick | Price | What to know |
|---|---|---|---|
| A better prompt with no extra tool | ChatGPT, Claude or Gemini | Free | Describe the task or end result in your own words, ask what a good brief would need, answer its questions and have it draft the prompt |
| A free prompt builder on the web | Prompt Cowboy | Free; $8 a month | Unlimited prompts on its standard model; no independent ratings |
| A free generator with no account | PrompTessor | Free | No sign-up; writes prompts for text, image and video models; no user figures published |
| One-click rewriting inside the chat box | PrettyPrompt | Free tier; paid upgrade | 4.9 from 142 Chrome Web Store ratings; works in ChatGPT, Claude and Gemini |
| A library of ready-made templates | AIPRM | Free version; paid tiers | More than 1 million users, but 3.9 from 3,400 ratings and no published prices |
| Prompts for images | Your image generator’s own tools | Included | Current image models take plain-language descriptions; see best AI image generators |
A category on the way out
Prompt generators grew up in 2023, when models needed coaxing. Six things show where the category is now.
Search interest has halved. On Google Trends, worldwide searches for “prompt generator” climbed through 2024, peaked in 2025 and by October 2026 were running at about half that peak. Searches for “prompt engineering” peaked later, in 2026, and have since fallen by about half as well.
The model makers are retiring their own optimisers. OpenAI’s documentation says it is “deprecating the dataset-backed prompt optimizer”, with its Evals platform going “read-only for existing users on October 31, 2026” and scheduled “to shut down on November 30, 2026” (OpenAI).
One of the best-known tools has closed. PromptPerfect, Jina AI’s prompt optimiser, carries a notice that it “will no longer be available after September 1, 2026”, following Jina AI’s acquisition by Elastic in October 2025.
The remaining tools are small. PrettyPrompt has 142 ratings and 50,000 users on the Chrome Web Store. Velocity has 15 ratings. Promptimize AI’s extension was last updated on 19 February 2025. The one tool with scale, AIPRM, has more than 1 million users and a 3.9 rating.
Prompt generation has become a free add-on. Writing tools such as QuillBot, Phrasly, Feedough and Originality.ai each offer a free prompt generator on their sites.
Nobody tests them. There is no benchmark for prompt generators, and no independent study compares the commercial products on the same tasks. The hands-on comparisons that exist are individual blog posts, and most “best AI prompt generator” lists are published by companies that sell one and rank their own product first. For that reason the tools below are listed, not ranked, on what each vendor and its store listing state.
Why the perfect prompt matters less now
The models people use today follow ordinary, specific instructions closely, and the biggest gains come from giving the AI the right context, not the right phrasing.
Forceful wording now backfires. Anthropic’s prompting guidance says prompts written to push older models into using a tool can make current models overuse it, and that “the fix is to dial back any aggressive language”: where a prompt once said “CRITICAL: You MUST use this tool when…”, Anthropic now recommends “more normal prompting like ‘Use this tool when…’”. Its core advice is plain: be clear and direct, explain why, and give examples. The test it suggests is to show your prompt to a colleague with little context; “if they’d be confused, Claude will be too”.
Explaining why beats commanding. Anthropic’s own example: “NEVER use ellipses” works less well than telling the model the response “will be read aloud by a text-to-speech engine”, because the model “is smart enough to generalize from the explanation”. That is a context fix, not a wording trick.
Longer is not better. Researchers at Nanyang Technological University found that prompts written by large models “often contain verbose, instruction-heavy content” that can overwhelm the model receiving them, and that the merits that matter are clarity, precision, a concise reasoning cue and preserving the original request (Zhu et al., arXiv).
Context is what moves results. The working term for this shift is context engineering. Across 200 logged tasks with four AI tools, one practitioner found that supplying structured context, such as reference files, examples, constraints and a rubric, raised first-pass acceptance from 32% to 55% and cut revision rounds from 3.8 to 2.0 (Calboreanu, arXiv). That is one person’s observational record, not a controlled trial, but it points the same way as the vendors’ own guidance. Our AI glossary notes the same shift on the jobs side: prompt engineering as a standalone job title has largely been absorbed into broader AI roles.
What this means for you
| Old habit | What works now |
|---|---|
| Hunting for a magic prompt template | Telling the AI who you are, what the output is for and who will read it |
| Capital letters, “CRITICAL” and threats | Plain instructions with the reason behind them |
| Long role-play preambles (“You are a world-class…”) | The actual material: your notes, files, data or a past example |
| Re-typing the same background every time | Saving it once in custom instructions, a project or memory, where your chatbot offers them |
| Getting it perfect in one shot | A short first request, then correcting the answer in the same chat |
What a good request includes
| Element | Example |
|---|---|
| Goal | ”Write a LinkedIn post announcing our new feature” |
| Audience and context | ”for small-business owners who use our invoicing app” |
| Constraints | ”under 150 words, no jargon, no emojis” |
| Output format | ”a hook line, three short paragraphs and a call to action” |
| An example, if you have one | ”match the tone of this previous post: …” |
When a prompt generator is still worth using
A prompt generator still helps in three situations: you habitually type five-word requests and want a one-click nudge to add goal, audience, constraints and format; you repeat the same kinds of task and want a library of templates; or you want consistency across a team. In each case the tool is helping you supply context faster, which is the part that matters.
The AI prompt generators that remain
These are listed, not ranked. Figures are from each tool’s own site or its Chrome Web Store listing.
| Tool | What it is | Free | Paid | Users and ratings | Works in |
|---|---|---|---|---|---|
| Prompt Cowboy | Web app that builds a prompt from a rough idea | Unlimited prompts on its standard model | $8 a month | ”1,000,000+ users”, by its own count; no independent ratings | Writes prompts for ChatGPT, Claude, Gemini and others |
| PrompTessor | Free web generator, no account | Yes, with a shared public allowance | None for the generator | None published | Writes prompts for text, image and video models |
| PrettyPrompt | Browser extension that rewrites your text in the chat box | Yes | In-app purchase | 4.9 from 142 ratings; 50,000 users | ChatGPT, Claude, Gemini |
| AIPRM | Library of prompt templates inside ChatGPT | Yes | Prices not published | 3.9 from 3,400 ratings; more than 1 million users | ChatGPT; templates for image tools |
| Velocity | Browser extension, one-click rewrite | Yes | Paid plan | 5.0 from 15 ratings; 1,000 users | ChatGPT, Claude, Gemini, Perplexity |
Prompt Cowboy
Prompt Cowboy is a web app that turns a rough idea into a prompt for ChatGPT, Claude, Gemini and other assistants, and lets you save, organise and reuse what it writes. Its pricing page lists a free plan with “unlimited prompts on our standard model” and an Individual plan at $8 a month that uses Claude Opus 5.5, learns your writing style from samples and carries context into follow-on prompts, with 20% off for annual billing and a Team plan. Prompt Cowboy says it is “trusted by 1,000,000+ users”; that is its own figure, and it has no user ratings at volume on an independent site.
Good for: trying a prompt builder without paying or installing anything.
PrompTessor
PrompTessor is a free web generator that needs no account. It turns a rough idea into a prompt with a title, context, variables, a recommended model and a token estimate, and it covers text models such as ChatGPT, Claude and Gemini as well as image and video models such as Midjourney, FLUX, Veo and Runway. Free use draws on a shared public allowance across its tools. It publishes no user numbers and has no ratings on an independent site.
Good for: a one-off prompt, including for image or video tools, without signing up for anything.
PrettyPrompt
PrettyPrompt is a browser extension that adds a button to ChatGPT, Claude and Gemini: you type a rough request, click once, and it replaces your text with a structured prompt before you send it. Its Chrome Web Store listing says it works “inside ChatGPT—no extra log-ins or accounts”, shows 4.9 out of 5 from 142 ratings and 50,000 users, and lists in-app purchases. That is the best rating of any tool here, from a small number of people.
Good for: people who prompt many times a day in a desktop browser. It does not work in the ChatGPT or Claude mobile apps.
AIPRM
AIPRM for ChatGPT adds a searchable library of more than 4,500 ready-made prompt templates to ChatGPT, aimed at marketing, copywriting and SEO. It is the only tool here with scale, at more than 1 million users, and it also has the lowest rating, 3.9 out of 5 from 3,400 ratings. Its pricing page describes a free version and several paid tiers without showing their prices.
Good for: marketers who repeat the same kinds of task and want a template to start from. A template is someone else’s wording for someone else’s job, so expect to rewrite it.
Velocity
Velocity is a browser extension that describes itself as “Grammarly for prompting”: one click turns your text into a longer, structured prompt. Its developer says it works across 40-plus AI sites. Its Chrome Web Store listing shows 5.0 from 15 ratings and 1,000 users, which is too few to say much.
Good for: people who want in-chat rewriting on Perplexity as well as ChatGPT, Claude and Gemini.
Smaller, stalled or closing
- Promptly is a free browser tool that rewrites any highlighted text by keyboard shortcut.
- Prompt Genie is a paid rewriter for ChatGPT, Notion AI and other tools.
- Promptimize AI works in ChatGPT, Claude and Gemini, but its Chrome Web Store listing was last updated on 19 February 2025 and shows 3.9 from 35 ratings.
- PromptPerfect, from Jina AI, optimised prompts for specific text and image models. It has closed: a notice on its own site says that, following Jina AI’s acquisition by Elastic in October 2025, PromptPerfect “will no longer be available after September 1, 2026”.
The model makers’ own prompt tools
Anthropic’s prompt improver. Anthropic launched a prompt improver in its developer Console on 14 October 2024 that rewrites a prompt using chain-of-thought instructions, standardised examples and prefill, and said it “increased accuracy by 30% for a multilabel classification test” (Claude blog). Those are Anthropic’s own figures. The tool is for developers using the Claude API, not for the Claude chat app.
OpenAI’s prompt optimizer is being wound down. OpenAI’s dashboard includes a prompt optimizer that rewrites a prompt using graded example data. It is deprecated, with the Evals platform it belongs to scheduled to shut down on 30 November 2026 (OpenAI). Do not build a workflow on it.
How to get the chatbot to write the prompt for you
- Drop in your ramble. Type or dictate everything in your head about the task or the end result you are after, unstructured: what you want, who it is for, what you have, what worries you.
- Ask what a good brief would look like. Ask the chatbot what would make a good prompt or brief for this, and what information it would need from you to write one.
- Answer its questions. This is where the context comes from, and it is the step a one-click generator skips.
- Have it draft the prompt. Read the draft and correct anything it got wrong.
- Use it or keep it. Run the prompt in the same chat, or save it as a project or custom instruction for anything you do repeatedly.
Frequently asked questions
What is the best AI prompt generator?
For most people it is the chatbot they already use. Describe the task or end result to ChatGPT, Claude or Gemini in your own words, ask what a good brief would need, answer its questions and have it draft the prompt. Among dedicated tools, Prompt Cowboy is free on the web, PrettyPrompt rewrites inside the chat box and holds 4.9 out of 5 from 142 Chrome Web Store ratings, and AIPRM is a template library with more than 1 million users. No independent benchmark compares them.
Is there a free AI prompt generator?
Yes. ChatGPT, Claude and Gemini will all write a prompt for free: describe the task or end result, ask what information a good brief would need, answer, and have the chatbot draft it. Among dedicated tools, Prompt Cowboy offers unlimited prompts on its standard model, PrompTessor is free with no account, Promptly is free, and PrettyPrompt, Velocity and AIPRM each have a free tier. QuillBot, Phrasly and other writing tools also give a prompt generator away on their sites.
What does an AI prompt generator do?
An AI prompt generator turns a short or vague request into a structured prompt that states the goal, context, constraints and output format. Most work as browser extensions with a button inside ChatGPT, Claude or Gemini, while others, such as AIPRM, offer libraries of ready-made prompt templates.
Do I need a prompt generator?
Most people do not. Current models follow plain, specific instructions closely, Anthropic’s own guidance advises dialling back aggressive phrasing, and a chatbot will improve a prompt for you if you ask. A prompt generator is worth it only if you prompt many times a day and want the rewrite to happen in one click, or you want shared templates for a team.
Are prompt generators dying out?
The category is shrinking. Worldwide search interest in “prompt generator” was about half its 2025 peak by October 2026 on Google Trends, OpenAI is shutting down its dataset-backed prompt optimizer on 30 November 2026, PromptPerfect closed on 1 September 2026, and most of the remaining tools have a small number of users and ratings.
Is Prompt Cowboy free?
Yes. Prompt Cowboy’s free plan offers unlimited prompts on its standard model, with saving and reuse of prompts. Its Individual plan costs $8 a month, uses Claude Opus 5.5 and learns your writing style. Prompt Cowboy says it has more than 1 million users; that figure is its own.
Is AIPRM free?
AIPRM has a free version, and paid tiers whose prices its pricing page does not show. It adds a library of more than 4,500 prompt templates to ChatGPT, has more than 1 million users and holds 3.9 out of 5 from 3,400 Chrome Web Store ratings.
Is PromptPerfect shutting down?
Yes, it has closed. A notice on PromptPerfect’s own site says that, following Jina AI’s acquisition by Elastic in October 2025, PromptPerfect is no longer available after 1 September 2026.
Can AI write prompts for image generators?
Yes. Any chatbot can write a detailed image prompt from a short description, and AIPRM includes templates for image tools. Current image models such as ChatGPT’s and Google’s Nano Banana take plain-language descriptions, so long keyword prompts matter less than they used to.
Is prompt engineering still a thing?
Prompt engineering still matters, but the emphasis has moved from clever wording to supplying context. Anthropic’s guidance for its current models recommends clear, direct instructions with the reason behind them and advises dialling back aggressive phrasing, and OpenAI is shutting down its dataset-backed prompt optimizer on 30 November 2026. The skill that improves results now is giving the AI the right background, examples and constraints, often called context engineering.
What makes a good AI prompt?
A good AI prompt states the goal, the audience and context, the constraints such as length and tone, and the format of the output, and includes an example where one exists. Researchers at Nanyang Technological University summarise good prompts as clear, precise, concise in their reasoning cues and faithful to the original request.