A note's text can be up to 250 words. The counter under the text box shows "… / 250 words".
1krNote is made for short notes and to-dos you can find again quickly, including by asking the AI. Short notes are also what makes meaning-based search work well.
For something longer:
- split it into several notes (for example one per topic or step),
- add a voice memo or a photo of a document to the note instead of typing it all,
- keep long documents in a notes or documents app, and put a short note with a reminder in 1krNote.