2026

February 2026

Custom Interfaces for Chat Agents

February 4th, 2026

You can now generate custom interfaces for your Chat Agents. Access the new “Preview” mode from the Workflow Sandbox toolbar and build your interface by chatting with Vellum. The interface code is versioned and deployed alongside your Workflow, so publishing your Chat Agent also publishes its interface. You can update the interface independently of the Workflow.

Workflow Sandbox showing the Preview mode tab highlighted in the toolbar
Preview mode in the Workflow Sandbox toolbar
Preview mode showing the Generate UI button with interface suggestions
Generate UI to start building your custom interface
A fully generated custom chat interface for an APUSH Tutor agent with welcome message and suggestion buttons
A custom interface generated for a Chat Agent

Microsoft Teams Integration

February 3rd, 2026

Microsoft Teams is now available as a native integration. Connect your Microsoft Teams workspace to Vellum and use it in your Workflows—send messages, post to channels, and more through Agent Nodes or Custom Nodes.

Native Integrations Grouping

February 3rd, 2026

The Integrations page now groups native integrations by Enabled and Disabled, making it easier to see which ones are ready to use with your Agents.

Integrations page showing native integrations grouped into Enabled and Disabled sections
Native integrations grouped by Enabled and Disabled

Message Queueing

February 2nd, 2026

Agent Builder now supports message queueing during response generation. Send multiple instructions in advance, pause sending them, and let them run automatically once the current response finishes.

Agent Builder showing message queue with queued instructions
Message queue in Agent Builder