2025

October 2025

GPT-5 Pro Models

October 6th, 2025

We’ve added support for OpenAI’s latest GPT-5 Pro models:

  • gpt-5-pro
  • gpt-5-pro-2025-10-06

Agent Builder - Generate Agent Nodes with Integration Tools

October 3rd, 2025

Agent Builder now automatically creates Agent Nodes with the right integration tools when you ask it to use integrations in your Workflows. It configures all the appropriate tools and API calls for you.

If a tool is not supported as a native integration in Vellum, Agent Builder can create custom tools using Python, Agent handoffs, Inline Subworkflows, version-controlled Deployed Subworkflows, and more.

Agent Node overview showing configured tools including Create linear issue, List linear projects, Fetch Notion Block Children, Fetch Notion Data, and Search Notion page
Agent Node configured with integration tools for Notion and Linear
Workflow execution view displaying Agent Node with tool call history and final output showing integration functionality
Workflow execution showing tool call history for streaming progress and debugging

Agent Builder - Configure Integrations

October 3rd, 2025

You can now configure third-party integrations directly from Agent Builder. Previously, you had to set them up outside of Vellum using Composio or manually configure API keys. Now, Agent Builder prompts you to connect integrations directly when it needs them for your Workflow.

We currently support: Slack, Notion, Google, Calendly, Hubspot, Linear, Github, Google Sheets, Google Calendar, Google Drive, and Gmail, with more coming soon.

Agent Builder interface showing Connect Notion and Connect Linear buttons with example workflow plan
Agent Builder prompts you to connect required integrations directly from the interface
Integration selection modal showing available platforms including Slack, Notion, Google, Calendly, Hubspot, Linear, Github, Google Sheets, Google Calendar, and Google Drive
Available integration tools displayed in the integration selection modal

Structured Outputs for Groq Models

October 2nd, 2025

We now support structured outputs for Groq models, making it easier to reliably parse responses that conform to your expected schemas.