December 5, 2025 - Show Your Work, Agent

Lots of small changes that make a big difference.

We've been busy making the Mito experience great that we've forgotten to write up release notes for the last couple of releases. Here's what's new in the last month:

Agent Review

You no longer have to guess what changes the Agent has made. After the Agent is complete you can now review all of the changes made to a notebook.

Go cell-by-cell if and choose what stays, and what gos.

New Models

We've added support for the following models:

• Gemini 3

• Claude Haiku 4.5

App Mode

• App Mode out of beta!

• You can now have multiple app in one folder.

• Ability to create/edit apps through Agent mode.

• Users can describe the app they want in Agent mode.

• App preview placeholder.

• A month of smaller bug fixes I've since forgotten about.

Other Changes

• Drag-and-drop file uploads.

• Agent is aware of active cell.

• Added free-tier usage stats to chat taskpane.