Yes
Claude went and just added a bunch more robust, human-grade examples to our training data and hold out set, and kept iterating until the model effectively learned the actual crux of what we were trying to teach it
montroser on Hacker News
In the thread “I ported JustHTML from Python to JavaScript with Codex CLI and GPT-5.2 in hours”, replying to this comment
Helped: Model added robust examples and iterated on training data.
We've been doing this at work a bunch with great success. The most impressive moment to me was when the model we were training did a type of overfitting, and rather than just claiming victory (as it all too often) this time Claude went and just added a bunch more robust, human-grade examples to our training data and hold out set, and kept iterating until the model effectively learned the actual crux of what we were trying to teach it.