It’s true that we don’t store outputs in the file format. This is the main tradeoff, as discussed in the blog. But that doesn’t mean marimo notebooks aren’t suitable for heavy computation.

marimo lets you automatically snapshot outputs in an auxiliary file while you work. We also have a persistent cache that lets you pick up where you left off — saving not just outputs but also computed data.

Many of our users do very heavy computation.

https://docs.marimo.io/guides/expensive_notebooks/