# AI Prompt Guide > Free, copy-ready AI prompts for ChatGPT, Gemini, Claude and Midjourney, sorted by niche, plus plain-English guides to writing better prompts. All prompts are free to use. Words in [square brackets] are placeholders for the reader's own details. ## Prompt libraries - [Diwali AI photo editing prompts](https://aipromptguide.net/prompts/diwali-ai-photo-prompts/): 12 prompts. Copy-paste Gemini (Nano Banana) prompts for Diwali 2026 photos: saree and kurta portraits, couple and family shots, diya selfies and greeting cards. - [AI rangoli design prompts for Diwali](https://aipromptguide.net/prompts/rangoli-design-prompts/): 10 prompts. Free AI prompts for Diwali rangoli designs in Gemini or ChatGPT: easy beginner rangoli, peacock, flower, Lakshmi charan, kolam and name rangoli. - [Diwali AI video prompts](https://aipromptguide.net/prompts/diwali-video-prompts/): 10 prompts. AI video prompts for Diwali 2026: turn your photo into a greeting video, rangoli time-lapses, diya reels and sale ads. For Gemini (Veo), Kling and Sora. - [Diwali reel ideas, captions and wishes](https://aipromptguide.net/prompts/diwali-reel-ideas/): 10 prompts. ChatGPT prompts for Diwali 2026: trending reel ideas, shot lists, captions, hashtags, wishes in Hindi and English, and sale posts for brands. - [ChatGPT prompts for marketing](https://aipromptguide.net/prompts/chatgpt-prompts-for-marketing/): 12 prompts. Free ChatGPT prompts for marketing: audience research, positioning, ad copy, landing pages, campaigns and reporting. Copy, fill in the blanks, paste. - [ChatGPT prompts for SEO](https://aipromptguide.net/prompts/seo-prompts/): 11 prompts. Free SEO prompts for ChatGPT, Gemini and Claude: keyword clustering, search intent, content briefs, meta tags, internal links, schema and local SEO. - [AI prompts for Instagram captions and Reels](https://aipromptguide.net/prompts/instagram-prompts/): 10 prompts. Copy-ready AI prompts for Instagram captions, Reel scripts, hooks, hashtags, carousels and bios. Works with ChatGPT, Gemini and Claude. - [ChatGPT prompts for YouTube creators](https://aipromptguide.net/prompts/youtube-prompts/): 8 prompts. Free AI prompts for YouTube: video ideas, titles, thumbnail text, full scripts, Shorts, descriptions and chapters. Copy and paste into ChatGPT or Gemini. - [ChatGPT prompts for students](https://aipromptguide.net/prompts/chatgpt-prompts-for-students/): 8 prompts. Free ChatGPT prompts for students: explain topics simply, make revision notes, practise exam questions, plan study time and get feedback on essays. - [ChatGPT prompts for your resume, cover letter and interviews](https://aipromptguide.net/prompts/resume-prompts/): 8 prompts. Free AI prompts to tailor your resume to a job, write a cover letter, improve LinkedIn and practise interview questions with ChatGPT or Gemini. - [AI prompts for small business owners](https://aipromptguide.net/prompts/business-prompts/): 9 prompts. Free ChatGPT prompts for small businesses: business plans, pricing, sales scripts, customer service replies, SOPs, WhatsApp messages and more. - [AI prompts for writing emails](https://aipromptguide.net/prompts/email-prompts/): 8 prompts. Copy-ready ChatGPT prompts for professional emails, cold outreach, follow-ups, saying no, newsletters and email sequences. - [AI prompts for coding](https://aipromptguide.net/prompts/coding-prompts/): 9 prompts. Free AI prompts for developers and beginners: explain code, debug errors, refactor, write tests, build scripts and learn a new language faster. - [AI prompts for teachers](https://aipromptguide.net/prompts/teacher-prompts/): 8 prompts. Free ChatGPT prompts for teachers: lesson plans, worksheets, quizzes, rubrics, differentiated activities, report comments and parent emails. - [Gemini AI photo editing prompts](https://aipromptguide.net/prompts/gemini-ai-photo-editing-prompts/): 10 prompts. Copy-paste Gemini AI photo editing prompts for Nano Banana: retro saree portraits, professional headshots, couple photos, product shots, 3D figurines and more. - [Midjourney and AI image prompts](https://aipromptguide.net/prompts/midjourney-prompts/): 10 prompts. Free AI image prompts for Midjourney, Gemini, ChatGPT and Flux: photorealistic scenes, illustrations, logos, interior design, food photography and more. ## Guides - [Diwali 2026 AI prompts: your complete guide to photos, rangoli, videos and reels](https://aipromptguide.net/blog/diwali-ai-prompts-guide/): Every AI prompt you need for Diwali 2026 in one place: Gemini photo edits, rangoli designs, photo-to-video greetings and reel ideas, with a day-by-day plan. - [How to write AI prompts that get useful answers](https://aipromptguide.net/blog/how-to-write-ai-prompts/): How to write AI prompts for ChatGPT, Gemini and Claude: the 5-part formula, before-and-after examples, and the mistakes that cause vague answers. - [ChatGPT, Gemini or Claude: which to use and how to prompt each](https://aipromptguide.net/blog/chatgpt-vs-gemini-vs-claude-prompts/): A practical comparison of ChatGPT, Google Gemini and Claude for everyday work, with prompting tips for each and a simple test to choose between them. - [Gemini AI photo editing: how to write prompts that keep your face the same](https://aipromptguide.net/blog/gemini-ai-photo-editing-guide/): How to edit photos with Google Gemini (Nano Banana): uploading, the prompt structure that keeps faces the same, and fixes for common problems. ## Full text - [All prompts in plain text](https://aipromptguide.net/llms-full.txt)