Free AI Prompt Library - ChatGPT, Claude, Gemini

ChatGPT Prompt to Compare Offers

Comparing commercial offers is a crucial step in any purchasing process, whether for a phone subscription, insurance, SaaS software, or service provider. Yet this task is often tedious: offers use different formats, highlight various criteria, and sometimes hide important conditions in the fine print. ChatGPT radically transforms this experience by becoming your personal comparative analyst. By providing it with details of several offers, it can structure them in a standardized table, identify key differences, calculate real costs over different periods, and highlight the pros and cons of each option according to your priority criteria. No more hours spent juggling browser tabs and Excel files: in seconds, you get a clear, reasoned summary that allows you to make an informed decision. Whether you are an individual comparing three internet plans or a procurement director evaluating supplier proposals, ChatGPT adapts its analysis to your level of requirement and specific priorities.

Mistral Prompt for Writing a Cover Letter

Writing a compelling cover letter is a delicate exercise that requires finding the right balance between professionalism, authenticity, and relevance. Mistral, the French AI model, excels particularly at writing in French thanks to its fine understanding of linguistic and cultural nuances unique to the Francophone job market. By using a well-structured prompt, you can generate a personalized cover letter that highlights your key skills, establishes a clear link between your background and the target position, and adopts a tone suited to the industry sector. Whether you are applying for a first job, a career change, or a management position, Mistral helps you structure your argument, avoid generic formulations, and produce a letter that stands out. The goal is not to replace your personal reflection but to speed up the writing process while inspiring you with best application practices.

Claude Prompt to Create a Pitch Deck

Creating a compelling pitch deck is a strategic exercise that can determine the success of a fundraising, partnership, or product launch. Claude excels at structuring complex arguments and synthesizing business information into impactful messages. By using the right prompts, you can generate a complete pitch deck with coherent narration, well-structured slides, and storytelling tailored to your audience. Claude helps you identify the key elements investors look for — problem, solution, market, traction, business model, team — and articulate them in a clear and memorable way. Whether you are an early-stage startup preparing a seed round or an established company seeking to convince a board of directors, Claude transforms your raw data and vision into a structured and persuasive presentation. AI does not replace your field knowledge, but it significantly accelerates the formatting of your pitch and pushes you to clarify every weak point in your narrative.

Stable Diffusion Prompt for Writing a Professional Bio

Stable Diffusion is an AI image generation tool that can transform the presentation of your professional bio with custom visuals. While text-based bio writing falls to language models, Stable Diffusion addresses an equally crucial aspect: the image accompanying your profile. An AI-generated professional portrait, a personal branding illustration, or a header visual consistent with your identity can make the difference between a bio that goes unnoticed and one that leaves a mark. In a context where LinkedIn, personal websites, and online portfolios demand quality visuals, Stable Diffusion enables the creation of realistic profile photos, professional banners, and thematic illustrations without hiring a photographer or graphic designer. This guide provides optimized prompts for generating the essential visual elements of a compelling professional bio, from classic corporate portraits to creative illustrations that reflect your expertise and personality in your industry.

DALL-E Prompt to Create a Loyalty Program

DALL-E, the AI image generator developed by OpenAI, is a powerful tool for designing visual elements of a loyalty program. Whether you're launching a loyalty card, a mobile app, or a rewards system, DALL-E allows you to quickly create professional visuals: logos, tier icons, reward badges, card mockups, and promotional materials. By formulating precise prompts, you get designs consistent with your brand identity without needing graphic design skills. The major advantage lies in speed of iteration: you can explore dozens of creative directions in minutes, test different visual styles, and refine your graphic universe before handing it off to a designer for finalization. Whether your loyalty program is for a local store, a restaurant chain, or an online shop, DALL-E helps you materialize your concept and create a memorable visual experience that encourages customers to engage and return.

Stable Diffusion Prompt for Writing a Job Offer

Stable Diffusion revolutionizes how recruiters and HR professionals design their job postings by adding a striking visual dimension. In an ultra-competitive job market, a job advertisement accompanied by a professional and attractive visual stands out instantly from traditional text-only ads. With Stable Diffusion, you can generate custom images that illustrate the work environment, company culture, or the position being offered, without relying on generic stock photos. Whether for LinkedIn, Indeed, Welcome to the Jungle, or your careers site, a unique visual captures candidates' attention and strengthens your employer brand. The prompts presented on this page guide you in creating professional illustrations tailored to your job postings: realistic photos of workspaces, stylized infographics of benefits, or dynamic scenes of your teams. Each prompt is optimized to produce results consistent with modern recruitment visual codes, while remaining easily customizable to your industry and brand identity.

Claude Prompt for Creating a Presentation

Creating an impactful presentation requires much more than aligning bullet points on slides. It requires structuring a narrative, prioritizing information, adapting the tone to the audience, and producing visually thought-out content. Claude excels at this task because it can simultaneously play the role of communication strategist, copywriter, and content designer. By providing a well-built prompt, you get a complete presentation with a coherent narrative structure, catchy titles, presenter notes, and visual suggestions. Whether you are preparing an investor pitch, internal training, a conference, or a simple team meeting, Claude adapts the level of detail, vocabulary, and format to your context. The major advantage is the time savings: instead of starting from a blank page, you start with a solid foundation that you refine to your needs. Claude can also generate content in various usable formats — structured Markdown, detailed slide-by-slide outline, or even HTML code for tools like Reveal.js. This approach transforms presentation creation from a time-consuming chore into an assisted creative process where you focus on the message rather than the formatting.

ChatGPT Prompt for Creating Mockups

Mockups are essential visual representations in the digital product design process. They allow you to visualize the final appearance of an application, website, or interface before development even begins. With ChatGPT, you can now generate detailed mockup descriptions, complete page structures, and even produce realistic mockup images via integrated DALL-E. Whether you're a designer looking to speed up your ideation phase, a project manager needing to present a concept to stakeholders, or an entrepreneur wanting to materialize your product vision, ChatGPT turns your text brief into usable mockups. The tool excels particularly at generating annotated wireframes, high-fidelity mockups with realistic content, and design variations to test different approaches. By combining contextual understanding of natural language with image generation, ChatGPT allows you to go from idea to visual in minutes, where the traditional process would require several hours of work on Figma or Sketch.

Midjourney Prompt for Writing a Newsletter

Midjourney has become an essential tool for creating striking visuals to accompany your newsletters. In a context where inboxes are saturated, the header image or illustrations integrated into your newsletter make all the difference between an opened email and an ignored one. With Midjourney, you can generate custom visuals that reinforce your editorial message, illustrate your sections, and create a cohesive visual identity from one edition to the next. Whether you produce a weekly tech newsletter, a monthly digest for your community, or a corporate newsletter, Midjourney allows you to produce professional-quality images without hiring a graphic designer. The prompts presented on this page are specifically designed to generate visuals suitable for the newsletter format: horizontal banners, section illustrations, thematic icons, and ambient images. Each prompt includes essential technical parameters such as the aspect ratio adapted for emails and a visual style consistent with email marketing standards. Discover how to transform your newsletters into memorable visual experiences.

Midjourney Prompt for Creating Mockups

Mockups have become an essential part of the creative process, whether to present a logo on packaging, visualize a website design on a screen, or stage a product in a realistic context. Midjourney revolutionizes this step by generating photorealistic mockups in seconds, without the need for complex PSD files or expensive stock images. Thanks to its advanced understanding of materials, lighting, and perspectives, Midjourney produces professional-quality staging that rivals studio photography. Whether you are a graphic designer presenting a visual identity to a client, an entrepreneur looking to visualize packaging before production, or a marketer creating visuals for a campaign, mastering mockup prompts will save you considerable time. The main challenge lies in the precision of the instructions: type of support, viewing angle, lighting, environment, and level of realism must be carefully described to obtain a usable result. This guide provides optimized and tested prompts for creating compelling mockups with Midjourney, from simple product previews to ultra-realistic renders worthy of a professional shoot.

Gemini Prompt for Writing LinkedIn Posts

LinkedIn has become the essential social network for professionals looking to build their personal brand, generate leads, or share their expertise. Yet writing impactful LinkedIn posts remains a challenge: you need to grab attention from the first line, structure your message to maintain engagement, and encourage interaction to please the algorithm. Gemini, Google's AI model, excels at creating professional content thanks to its fine understanding of corporate tone and ability to produce nuanced text. By using well-constructed prompts, you can turn Gemini into a true LinkedIn ghostwriter: it generates magnetic hooks, structures your ideas into mobile-friendly posts, integrates natural calls to action, and adapts the tone to your target audience. Whether you are an entrepreneur, recruiter, consultant, or employee seeking visibility, these prompts will help you publish quality content regularly without spending hours. Discover how to leverage Gemini to create posts that generate likes, comments, and professional opportunities.

Prompt Gemini for Creating YouTube Thumbnails

YouTube thumbnails are the first visual element that captures viewers' attention in their recommendation feed. A striking thumbnail can multiply a video's click-through rate by 3 or 4. With Gemini, Google's multimodal AI, you can now generate professional thumbnail concepts in seconds. Gemini excels at understanding visual context and can produce images that follow YouTube's graphic codes: readable large text, marked facial expressions, strong color contrasts, and guiding compositions. Whether you're a beginner creator without design skills or a seasoned YouTuber looking to speed up your workflow, the prompts on this page will let you generate thumbnails that rival those of the biggest channels. You'll learn how to structure your instructions to get 1280x720 pixel thumbnails with the right balance between textual and visual elements, while following best practices that maximize click-through rates on the platform.