· 3 min read
The AI in LatexDo, shown in the editor
Sentence completion, Reformulate with AI, the \fix command, @ file mentions and TikZ figures: each AI feature in LatexDo, played live with a real cursor.
Most AI features are explained with a screen recording. A video is the wrong tool for that: you cannot pause it on the exact moment that matters, it blurs the text you are supposed to read, and it costs megabytes before you see one frame.
So every demo on this page is the editor itself, drawn in HTML and driven by a cursor. The text is real text, the menus are the menus LatexDo shows, and the labels are the labels in the app. Each demo starts when you scroll to it. Use Pause to stop on a step, or Replay to watch it again.
One rule runs through all of them: the AI proposes, you decide. LatexDo never edits your file behind your back. A suggestion is grey text until you press Tab, and every change from the assistant waits on an Approve button.
Finish the sentence you are writing
Pause at the end of an unfinished sentence and LatexDo offers the rest of it as grey text after the caret. Press Tab to keep it. Keep typing, or press Escape, and it disappears.
It only speaks when a sentence is actually open. It stays quiet inside math, comments, command names, citation and reference arguments, and headings, and it never proposes more than the one sentence you started. You can switch it off under Settings → AI → Complete sentences as I type.
Reformulate a selection
Select a sentence, right-click it and choose Reformulate with AI, or press ⇧⌘R (Ctrl+Shift+R on Windows and Linux). The assistant rewrites only what you selected and shows the change as a diff: the old text in red, the new text in green. Nothing changes until you choose Approve.
Ask AI about Selection (⇧⌘A) in the same menu attaches the selection to the chat instead, with its file and line numbers, so you can ask a question about it rather than replace it.
Fix the build with one command
Type \ in the chat to see the quick commands. \fix compiles the project, reads the errors, proposes a fix for each one, and compiles again to check the build is clean.
The other quick commands work the same way: \rewrite the selection, \cite to suggest citations for it from your bibliography, \proofread or \summarize the open document, \outline the whole project, and \check to run the built-in checkers.
Point the assistant at a file
Type @ and pick a file from the project, or press + in the composer. The assistant reads that file before it answers, so you can ask about a chapter you do not have open.
Draw a figure, then place it
Describe a figure in plain words. The assistant answers with TikZ code and an Insert figure button. The figure lands at your cursor and appears in the PDF preview, as ordinary LaTeX you can keep editing.
Where the model runs
The assistant can use one of three kinds of model, chosen in Settings → AI:
| Option | Where it runs | What you need |
|---|---|---|
| LatexDo AI | On your computer | A one-time model download |
| Ollama | On your computer | Ollama and a model you pulled |
| Cloud | At the provider | Your own API key |
The LatexDo AI models come in four sizes. LatexDo AI handles completion and quick fixes; AI Plus adds the in-editor agent, compile diagnostics and citations; Pro and Pro Max add paper review, conference checks and rebuttals. Pick the largest one your computer runs comfortably.
Try it
Every demo above is a feature in the current release. Download LatexDo, open a project and open the AI panel. The documentation covers the settings in detail.