Create your own finetuned AI model using Google Sheets
Hello HN, We built Promptrepo to make finetuning accessible to product teams — not just ML engineers. Last week, OpenAI’s CPO shared how they use fine-tuning for everything from customer support to deep research, and called it the future for serious AI teams. Yet most teams I know still rely on prompting, because fine-tuning is too technical, while the people who have the training data (product managers and domain experts) are often non-technical. With Promptrepo, they can now: - Add training examples in Google Sheets - Click a button to train - Deploy and test instantly - Use OpenAI,…
In plain words
Promptrepo is a platform that simplifies AI model fine-tuning for non-technical team members. Users add training examples directly in Google Sheets, then click a button to train and deploy models using OpenAI, Claude, Gemini, or Llama. Designed for product managers and domain experts who have training data but lack ML expertise, it eliminates the technical barriers that typically prevent product teams from using fine-tuning to improve AI performance on specific tasks.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hello HN, We built Promptrepo to make finetuning accessible to product teams — not just ML engineers. Last week, OpenAI’s CPO shared how they use fine-tuning for everything from customer support to deep research, and called it the future for serious AI teams. Yet most teams I know still rely on prompting, because fine-tuning is too technical, while the people who have the training data (product managers and domain experts) are often non-technical. With Promptrepo, they can now: - Add training examples in Google Sheets - Click a button to train - Deploy and test instantly - Use OpenAI, Claude, Gemini or Llama models We’ve used this internally for years to power AI workflows in our products (Formfacade, Formesign, Neartail), and we're now opening it up to others. Would love your feedback and happy to answer any questions! --- Try it free - https://promptrepo.com/finetune Demo video - https://www.youtube.com/watch?v=e1CTin1bD0w Why we built it - https://guesswork.co/support/post/fine-tuning-is-the-future-...
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