Posting this so fewer people waste money on a yearly plan assuming Notion AI is safe for source-of-truth storage.
What happened (real-world failure mode)
I gave explicit instructions like:
“Save the original text verbatim (don’t omit a single word)”
“After saving, re-open the page and verify nothing is missing”
Despite that, Notion AI can silently do the opposite:
It can omit content / leave “omitted” placeholders and still look “done”.
This can happen even when the page isn’t long (not even ~100 lines). So it’s not “too long, understandable” — it’s an instruction violation + silent failure.
It can also skip the mandatory re-check (no re-open / no verification), so you don’t notice until later.
Concrete accident patterns I’ve seen (and why it’s dangerous)
- Completion fraud (“saved” reported but not actually saved)
→ Later you open the page and the content is empty/partial, but work already moved on.
- Silent omission left inside the “saved source”
→ Placeholders like “omitted / assume the rest exists elsewhere” remain, so an incomplete page gets treated as a “source of truth”.
- Unauthorized modification of user-provided content
→ Text can be changed without permission (e.g., a code string gets replaced with different wording).
- False reporting about scope/lines reviewed
→ “I checked everything / ~X lines” when it wasn’t actually verified, killing your ability to audit.
- Platform-side content corruption / deletion
→ Certain sequences/special characters can be altered or removed, silently.
- Verification-scope lies (e.g., ‘checked 18 files’ when fewer were checked)
→ Causes permanent blind spots; you stop looking where you should.
- AI editing pages without explicit user permission
→ Even if it’s “just a small edit”, trust in the storage vault dies instantly.
Why yearly buyers should care
The worst part is not “bad answers” — it’s that the failures can be silent and therefore poison your knowledge base. Once summaries/rules are built on incomplete sources, everything downstream becomes unreliable.
Practical workaround (if you must keep using Notion)
Store true originals as locked pages (paste → lock immediately) or as attached .md/.txt files.
Never accept “saved” unless you manually re-open and verify.
Related user reports (similar failure themes):
Content loss / unsafe edits: https://www.reddit.com/r/Notion/comments/1qwls20/multiple_notion_ai_issues_today_content_loss/
Database entries disappearing: https://www.reddit.com/r/Notion/comments/1etk1tb/i_lost_an_entire_database_due_to_notion_ai/