# Sebastian Raschka says LLM training is hard to master broadly

> Original title: LLM training is hard. Hard to be a jack of all trades.

- Source: Sebastian Raschka
- Published: 2026-11-12T15:08:50.000Z
- Bad Influence: https://badinfluence.news/items/z09gjou6l1f4wvpxpui0937l3
- Original: https://x.com/rasbt/status/2120896608543924560

## Summary

Sebastian Raschka says LLM training is hard, because being a jack of all trades is difficult. He is responding to Alex Wang, who says he is surprised there is not more pretraining and posttraining codesign, and who suggests companies ship their org charts.

## Post

LLM training is hard. Hard to be a jack of all trades.

## Quoted post @heyyalexwang

> im surprised there isnt more pretrain-postrain codesign
> 
> i guess companies really do ship their org charts

https://x.com/heyyalexwang/status/2120627758355329347