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Vellum Assistantv0.12.6

Released September 30, 2026Major

iOS Android

What changed

  • New featureAdded document revision history with snapshot browsing and restoration
  • UXEnhanced document editor with a new toolbar containing links, comments, and placeholders
  • New featureAdded Claude Sonnet 5.5 to the model catalog
  • New featureEnabled previews for .xlsx workbooks in the chat file drawer
  • UXRefreshed All Chats layout and added live task activity indicators
  • New featureAdded Serply as a bring-your-own-key web search provider
  • PerformanceGeneral bug fixes and stability improvements

Original release notes

Documents now keep revision history. Browse snapshots and restore an earlier version anytime.
The document editor has a real toolbar with links, a comments button, and a placeholder.
Claude Sonnet 5.5 joins the model catalog.
.xlsx workbooks now preview in the chat file drawer.
All Chats got a layout refresh and shows live task activity.
Serply joins the web search providers as a bring-your-own-key option.
Bug fixes and stability improvements to keep your assistant running smoothly.

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