PromptLab

Show HN: PromptLab: Run LLM prompts directly inside Google Sheets

Based, PromptLab works in show hn launch.

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I built PromptLab: a simple Google Sheets add-on that lets you use LLMs like GPT4o, Gemini or DeepSeek directly inside a spreadsheet.I kept running into the same problem: Getting a huge dataset (like keywords, leads, reviews, etc.) and having to copy-paste it row by row into ChatGPT to filter or categorize it. So I built a lightweight function inside Sheets: =TESTPROMPT(input, model)You can:Clean up keyword dumps from Google AdsClassify leads or responsesRewrite content at scaleCompare different model outputs side by sideProcess 1000+ rows in one go (just drag the formula down)No API keys needed, no Zapier, no browser extensions.Would love feedback or ideas on other use cases. Happy to answe

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Website: promptlabco.com