diff --git a/TODO.md b/TODO.md
index ce06a1c1a6..f7cdc512f7 100644
--- a/TODO.md
+++ b/TODO.md
@@ -39,3 +39,12 @@ Ideas and features deferred from the current alpha.
   - **Quarto RevealJS**: insert slide divider (`---`), insert speaker
     notes (`::: notes`), insert columns layout, insert video embed
     (using Quarto's `{{< video >}}` shortcode).
+
+### AI writing assistant
+
+- **In-editor AI assistant** — Inline writing help similar to what Overleaf
+  and CoCalc offer: suggest completions, rephrase selections, explain LaTeX
+  errors, and generate boilerplate (figures, tables, equations). Should work
+  across all three formats (`.tex`, `.typ`, `.qmd`). Backend would proxy
+  requests to a configurable model API (Claude, OpenAI-compatible) so
+  self-hosters can bring their own key.