https://www.promptshelf.blog/blog A curated library of AI prompts by profession and use case. Copy-paste prompts for teachers, marketers, developers, HR, and more. en-us undefined (PromptShelf Editorial) undefined (PromptShelf Editorial) Sat, 30 May 2026 00:00:00 GMT https://www.promptshelf.blog/blog/chatgpt-for-market-research https://www.promptshelf.blog/blog/chatgpt-for-market-research A practical guide to using ChatGPT for market research in 2026: framing questions, competitor mapping, survey design, interview guides, and synthesis. Sat, 30 May 2026 00:00:00 GMT undefined (PromptShelf Editorial) chatgptmarket researchproductmarketingai tools https://www.promptshelf.blog/blog/chatgpt-prompts-for-small-business https://www.promptshelf.blog/blog/chatgpt-prompts-for-small-business 25 copy-paste ChatGPT prompts for small business owners: sales, marketing, ops, finance, hiring. One reproduced verbatim from real ChatGPT. Sun, 03 May 2026 00:00:00 GMT undefined (PromptShelf Editorial) chatgptsmall-businessproductivityai-toolsentrepreneurship https://www.promptshelf.blog/blog/chatgpt-vs-claude-2026 https://www.promptshelf.blog/blog/chatgpt-vs-claude-2026 A direct comparison of ChatGPT vs Claude for working professionals in 2026, with the same prompt run on both and a side-by-side of the actual outputs. Thu, 30 Apr 2026 00:00:00 GMT undefined (PromptShelf Editorial) chatgptclaudecomparisonproductivityai-tools https://www.promptshelf.blog/blog/chatgpt-vs-perplexity-research https://www.promptshelf.blog/blog/chatgpt-vs-perplexity-research We ran the same research query on free ChatGPT and free Perplexity. Side-by-side test, citation hygiene scored, and who should pick which tool in 2026. Mon, 11 May 2026 00:00:00 GMT undefined (PromptShelf Editorial) chatgptperplexitycomparisonresearchai-tools https://www.promptshelf.blog/blog/how-to-build-a-custom-gpt https://www.promptshelf.blog/blog/how-to-build-a-custom-gpt How to build a custom GPT in 2026: scope it, write the instructions, add knowledge files, test it, and share it. Step-by-step with copy-paste prompts. Wed, 03 Jun 2026 00:00:00 GMT undefined (PromptShelf Editorial) chatgptcustom gptai toolsproductivityhow to