October 2025
Simplified Deployment URLs
October 24th, 2025
We’ve simplified the URL structure for Deployment pages. Previously, URLs required both the Sandbox ID and Deployment ID. Now, they only require the Deployment ID.
For example:
- Before:
/workflow-sandboxes/<sandbox-id>/deployments/<deployment-id> - After:
/workflow-deployments/<deployment-id>
This makes it easier to construct URLs in your external systems and link back to Vellum. You can also use a Deployment’s name in place of its ID for improved readability.
Old URLs will continue to work and automatically redirect to the new format.
New Native Integrations
October 24th, 2025
We’ve added support for six new native integrations:
- Asana
- Box
- ClickUp
- Discord
- Eventbrite
- Intercom
You can now connect these integrations directly to your Workflows either in Agent Builder or in Agent Nodes or Custom Nodes.
Agent Builder Updates
October 20th, 2025
We’ve shipped several more improvements to Agent Builder:
- Selectable suggestions in chat. You can now choose from multiple suggestions when Agent Builder offers options.
- Integration Context Awareness. Previously, if you connected integrations like Notion, Slack, etc., Agent Builder could not access the context of the integrations. Now, it can invoke tools directly to create better Scenarios and Workflows. For example, it can look up a Slack Channel ID without you needing to manually find it in Slack.
- Improved Runtime Error Debugging. Agent Builder is now much better at reading the results of the last Workflow run. This means Agent Builder is now much better at fixing certain runtime errors.
- Better relative date handling. Agent Builder now uses more dynamic logic when building Agents that use relative dates, like “look at all tickets closed in Jira or Linear in the last two weeks.” Previously it had a tendency to hardcode dates, but now they will be relative to the moment the Agent / Workflow is executed.
- Native integration reliability improvements. We’ve fixed several bugs and improved reliability when adding native integrations to Agent Nodes.
Claude Haiku 4.5 Model
October 15th, 2025
We’ve added support for Anthropic’s latest model Claude Haiku 4.5.
Agent Builder Updates
October 14th, 2025
We’ve shipped several improvements to Agent Builder:
- Threads are now generally available. You can now leave and return to Agent Builder to continue a conversation without losing your progress. You can also create multiple conversation threads to organize different development sessions and ideas as you develop your Workflows.
- Ports support. Agent Builder now supports Ports in Workflows. You can ask Agent Builder to create Workflows that use Ports to structure data flow between Nodes.
- Model selection and utilization. We’ve made several improvements to model selection and utilization. Agent Builder will no longer select invalid models and has better awareness of features & configureation options available on different popular models such as Claude, Gemini, and OpenAI.
- Deployment Node support. Agent Builder now supports Prompt Deployment Nodes and Workflow Deployment Nodes. You can use version-controlled, deployed Prompts and Workflows directly in the Workflows that Agent Builder helps you build.
- Documents support. Improved how Agent Builder handles native document inputs to reduce errors and streamline setup.
- Document Index support. Agent Builder can now create Document Indexes and view files within them. Agent Builder can set up and configure your document storage directly while building your Workflow.
- UX improvements. The “Proceed with plan” flow is now smoother, setting up multiple integrations at once is clearer, and you’ll now see a button to open the inputs panel directly from Agent Builder chat when needed.
- Reliability & performance improvements. Map Nodes now handle inputs from Prompt Nodes better and have improved output handling. Behind the scenes, we’ve made optimizations to improve latency and reduce crashes, especially when working with Workflows that contain Map Nodes.
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 Builder - Configure Integrations
October 3rd, 2025
You can now configure third-party integrations directly from Agent Builder. Previously, you had to set them up manually in the Agent Node or Custom Node or manually configure API keys. Now, Agent Builder prompts you to connect integrations directly when it needs them for your Workflow.
Native Integrations
October 2nd, 2025
You can now authenticate with third-party integrations directly in Vellum. Previously, you had to set them up through your own Composio account. You can manage integrations from the Integrations UI or directly in an Agent Node within a Workflow. Once configured, use them in Agent Nodes or Custom Nodes to invoke third-party tools.
We currently support: Airtable, Calendly, Firecrawl, Gamma, Github, Hubspot, Linear, LinkedIn, Mailchimp, Notion, Perplexity, Reddit, Serp Api, Slack, Webflow, and Zendesk, with more coming soon.
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.
