NotionNotion's late September updates cover the unglamorous and the ambitious in equal measure: a desktop bug fix, three new AI models for agents, the first step in rebuilding Notion Calendar natively, and a new integration with automation tool Muse. None of it needs its own page, but builders running agents or living in Calendar will want the detail.
Desktop App Stability Fix
Notion pushed a quality-of-life update to the desktop app that cuts down on random refreshes, which means less unsaved work getting wiped out mid-edit.
DeepSeek V4.1 Flash
DeepSeek V4.1 Flash, an open-weight model, is now available as a model choice inside Personal and Custom Agents, following Notion's earlier addition of Claude Fable 5.1 to the same agent types.
Notion Calendar Native Rebuild
Notion is rebuilding Notion Calendar natively inside the main product rather than as a separate app, starting with a full-screen Calendar widget. It is the first step toward folding the standalone Calendar app into Notion itself, adding to earlier work on smart scheduling that recommends meeting times and flags conflicts.
Notion-Muse Integration
Muse, a work automation tool, can now connect to Notion to pull context, make updates, and keep tasks moving across both tools once you give it something to do.
GLM 5.3 and GLM 5.3 Flash
Two more open-weight models, GLM 5.3 and GLM 5.3 Flash, joined the lineup for Personal and Custom Agents, widening the model choices available for agent tasks after Notion recently gave admins more say over which AI models are allowed.
Sources
5 checkedHow we cover tool news: Create With's tool desk drafts these reports with AI from the sources listed above and checks them against those sources before publishing.
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