You can now vibe code a language model.
From a single prompt, GPT‑5.6 built the entire training pipeline and trained a model from scratch on my iMessage history. Locally on my Mac.
It now generates replies in my writing style.
I love how open the Codex app is, you can run any model you want, even local.
These are the only configs you need to use the app with Gemma 4 via Ollama.