Node KB — Smarter Knowledge Access at the Node Level

Previously, knowledge bases could only be set globally. With Node KB, you can now assign a specific knowledge base to a specific node in your conversation flow.

This update allows agents to:

• Retrieve more accurate answers based on context
• Respond with lower latency by narrowing the search space
• Deliver higher customer satisfaction with precise responses
  

Start Using Node KB Today

Role-Based User Manager — Safer Collaboration

Until now, any team member could change critical settings. With the new Role-Based User Manager, you can assign access levels across your team:

• Admin — Full control, including billing & user management
• Developer — Build/test agents, manage analytics & settings
• Member — Read-only access, no changes or sensitive data
  

This makes it possible to:

• Protect sensitive configurations
• Control permissions at scale
• Ensure safer collaboration across your team
  

👇 Assign roles today in the User Manager.

See Docs

Security Update — Public API Keys & Widgets with reCAPTCHA

To protect against toll fraud and spam, we’ve added Google reCAPTCHA to Retell’s Public API keys, chat, and call widgets.

This makes your account:

• More secure against bots and fake traffic
• Easier to manage with a 5-minute setup
• Protected from fraud that could lead to high costs

✨ How it works

• Go to Public API Keys → Edit Key
• Toggle Abuse Prevention (Google reCAPTCHA)
• Add your reCAPTCHA secret key and set a score threshold

Outbound SMS Via API  — Agents Can Now Reach Customers First

Your agents can now send Outbound SMS directly to customers, not just reply when contacted.

With this release, agents can:

• Send reminders, alerts, and follow-ups instantly
• Re-engage inactive customers with proactive outreach
• Handle time-sensitive updates without waiting for inbound contact

👇 Get started with Outbound SMS

See Docs

Phone Extensions & IVR Navigation

Your Retell AI agents can now automatically navigate IVR menus using DTMF (digit-press) inputs — no more waiting around or manual instructions needed.

With this update, agents can:

• Navigate multi-level IVR systems automatically (e.g., press 1 for Sales, 2 for Support).
• Use the Press Digit node in the agent builder to configure when and what digits to press.
• Handle detection delays to ensure they don’t trigger prematurely, making navigation smoother and more accurate.

Try it now with the Press Digit function in your workflow

Batch Call Window

Until now, batch calls could only be launched immediately or scheduled at a single time. With Batch Call Window, you can now define exactly when calls are allowed to run — setting specific hours and days of the week.

• Prevent calls from going out after hours
• Control concurrency across campaigns
• Ensure outreach stays within business rules

👉 Start using Batch Call Window today to keep your campaigns on-time, efficient, and compliant.

Other Improvements

1. Default Variables in Agent Config: You can now set default variable values directly in the agent configuration for faster setup and consistency.
2. Phone Extension & IVR Navigation: Agents can now transfer calls directly to extensions and automatically navigate IVR menus, no more manual keypresses.
3. Custom Filters in Call & Chat History: Call and chat history now supports filtering by custom post-call analysis fields, including enum, boolean, and number types, giving you more precise ways to analyze interactions.
4. New Settings Page: A redesigned settings page has been introduced, consolidating four key pages into one for easier navigation and cleaner management.

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