Best AI Prompt Generators – With the democratization of generative AI like ChatGPT or Midjourney, it is now possible to generate stunning text or images in just a few clicks.
But to achieve this, you need to understand the different generative AI models. For this, there are prompt generators that can help you design the most efficient and accurate instructions possible. Another option is to follow our training dedicated to prompt engineering .
To help you choose from the thousands of tools available on the web, we’ve conducted a survey and gathered the 10 best prompt generators on the market in 2025.
A prompt generator is a tool that allows you to easily and quickly generate instructions given to generative AI models such as ChatGPT, Midjourney, GPT-4o Image (ex-DALL·E) or Stable Diffusion.
These tools are very recent and are also called prompt builder , prompt helper or prompt optimizer.
To write quality prompts, you can start with prompt generators. But if you want to take full advantage of generative AI, you’ll need to learn the art of prompt engineering .
There are two main reasons to use a prompt generator:
PromptHero is a platform dedicated to optimizing your prompts for a variety of AI models. This tool saves you valuable time by offering a large library of prompts adapted to the most popular models: ChatGPT , Stable Diffusion, Midjourney or Openjourney.
Additionally, PromptHero offers an API that allows you to integrate their data into your business projects. The first 2,000 API requests are free, perfect for testing before going further. Try it out and explore for yourself!
Hugging Face is more than just a American open-source platform: it’s a collaborative community and a powerful tool for creating prompts for models like ChatGPT, Stable Diffusion, and Midjourney.
By exploring their “Spaces,” you can access prompt generators tailored to a variety of use cases, from text to images. With a search by template or user rating, Hugging Face makes it easy to discover the tools that work best for you. Free and premium options cater to every need, from hobby to business project.
Specialized GPTs are pre-trained models available through ChatGPT’s Plus or Pro subscription . Clicking Explore GPTs takes you to a library of conversations optimized for specific tasks. These GPTs deliver skilled results with configurations tailored to the community’s needs.
Within this variety of templates, you’ll find many prompt generators suitable for AI like GPT-4o image generator , Midjourney , and other generative tools. Each GPT is rated and accompanied by the number of users, making it easy to compare and identify the most efficient and popular ones.
Ideal for both amateurs and professionals, specialized GPTs offer a flexible solution to maximize your productivity in various fields.
FlowGPT hosts a wide selection of prompt generators tailored for popular AI models such as Midjourney , Stable Diffusion , ChatGPT , Adobe Firefly , and Leonardo AI . The platform offers tools accessible to everyone thanks to the Ares model , which is completely free and offers a standard experience with unlimited chats.
For higher performance, you can opt for the Athena or Apollo models , which significantly improve conversation quality and available memory, at an additional cost. FlowGPT is therefore a flexible choice, suitable for both amateurs and professionals looking for advanced solutions.
PromptoMANIA is a free prompt generator designed for AI art enthusiasts and professionals. Compatible with models like Midjourney, CF Spark, Stable Diffusion, and DreamStudio, this tool makes it easy to create detailed prompts to generate stylized portraits , original landscapes, or even 3D drawings.
Read Also: Prompt Expert: What he does, Work and How much He Earns
Its ease of use makes it an excellent choice for those who want to explore visual creation without complications.
Bhunty is a free tool specifically designed to optimize your prompts for BlueWillow.ai , a generative image AI . It allows you to define a general theme and adjust several parameters to achieve a precise result that meets your expectations. Simple and effective, Bhunty is an essential resource for maximizing the potential of BlueWillow in your creative projects.
With PromptPerfect, you can improve your accuracy and efficiency when designing your prompts, whatever the format you’re looking for: blog post, job description, literary essay, or fanfic novel, everything is possible with an optimized prompt!
The tool supports all versions of ChatGPT as well as other generative AI models like Claude, Mistral, Command, or Llama. With features like Auto-tune to fine-tune your instructions and Arena to compare performance, PromptPerfect is ideal for producing reliable results in minimal time.
ChatX is a free marketplace where you can explore and use prompts for ChatGPT and Midjourney.
To create a custom prompt, you only need to provide two pieces of information: your intended purpose (a blog post, product sheet, speech, or email) and your role (writer, social media manager, employee, etc.). ChatX is ideal for those looking to generate prompts tailored to a variety of needs in a minimal amount of time.
WebUtility’s Prompt Generator is a free and easy-to-use solution for creating prompts for ChatGPT. Whether you’re writing an essay, article, data sheet, book summary, or report, this tool generates prompts in just a few clicks.
With its user-friendly interface, you simply select the desired text type and let the tool optimize your instructions for precise and suitable results.
HeroGPT is a free platform that hosts pre-designed prompts to suit your creative goals. With the AI Writing Prompt Generator, you can customize prompts for ChatGPT and get tailored results, whether for a dystopian novel, a poem, or a diary entry.
With its optimized prompts, HeroGPT is an ideal tool for exploring original ideas and improving your creations.
In this article, we’ve introduced you to the 10 best Prompt Generators in 2025. They’ll help you create the clearest prompts that are best suited to the AI model you’re using!
If you want to master the art of prompt engineering and become a true professional in generative AI models, we invite you to follow our Prompt Engineer diploma course . It lasts 5 days and can be financed by your CPF.
The best Midjourney prompt generator we can recommend is PromptoMANIA, as it allows you to generate free artistic prompts of unparalleled finesse and creativity.
The best and most popular prompt generator for ChatGPT on the web is PromptPerfect, which gives you the ability to create clear and precise instructions to make yourself understood by the most widely used generative AI in the world.
The best prompt generator for Stable Diffusion is PromptHero, an online platform that gives you access to a fantastic library of prompts sorted by AI model and rated by the site’s community. You’re sure to find inspiration to write THE perfect prompt for your creations!
Pradeep Sharma is a author the mind behind Techjustify, where I craft insightful blogs on technology, digital tools, gaming, AI, and beyond. With years of experience in digital marketing and a passion for tech innovation, I aim to simplify complex topics for readers worldwide.
My mission is to empower individuals with practical knowledge and up-to-date insights, helping them make informed decisions in the ever-evolving digital landscape.
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