Show HN: I fine-tuned GPT4.1 on my iMessage history

5 jonpizza 4 8/28/2025, 2:48:14 AM jonyork.net ↗

Comments (4)

felix089 · 32m ago
How did you structure the dataset for FT? Reminds me of: https://rosslazer.com/posts/fine-tuning/
ungreased0675 · 4h ago
Have you tried talking to yourself with this? Were there any unexpected insights?
bn-l · 6h ago
I tried it out. Were many of the texts about hooking up and “cuties”?
jonpizza · 5h ago
Not really. There are some, but I do think generally my conversations kinda biased the model over towards adjacent topics. I also included something in the system message along those lines ("Hi, I have a cute girl I want you to meet") for a sample response to a basic input like "Hi" just to make the conversation more interesting.