November 2025 Summaries

Agent Observability is a new feature launched in the LiveKit Cloud Dashboard, designed to offer a comprehensive view of voice agent sessions by providing synchronized audio playback, transcripts, turn-by-turn traces, and logs in one interface. This tool helps diagnose issues in live conversations by allowing users to pinpoint the root causes of problems, such as latency or interruptions, which could stem from various factors including model response time, transcription errors, or network issues. With views for transcripts, traces, and logs, users can identify precise moments where issues occur, such as aggressive turn detection or slow API calls, and take corrective action. The feature is available in the v1.3+ of the Python Agents SDK, with future support for TypeScript, and offers optional recording with data retention for 30 days, while plans for localized data storage and automatic session data export are underway. Currently in beta, the feature is free for all LiveKit Cloud users until the end of the year, with future enhancements planned, including aggregate metrics and automated testing tools to further optimize agent performance.

Agent Builder is a browser-based tool that enables users to create, test, and deploy fully functional voice agents on LiveKit Cloud swiftly and without local setup. It offers a straightforward process where users start with a clear system prompt, leveraging LiveKit's built-in voice pipeline features like noise cancellation and multilingual detection. The tool allows for quick iteration with autosaving and version history, and it supports the integration of HTTP tools for dynamic data retrieval and processing during conversations. Users can test their agents live in the browser and deploy them with a single click, with the option to access and download the underlying code for further customization. Agent Builder is designed to be a starting point that facilitates the transition to more complex SDK implementations, supported by comprehensive documentation and AI-guided assistance. Future enhancements aim to include client tool support, real-time API integration, cost estimation, and a streamlined export-to-GitHub workflow, ensuring scalability and sophistication for various user needs.

LiveKit has launched LiveKit Phone Numbers, a first-party telephony service that allows users to connect voice agents directly to the phone network without needing a third-party SIP trunk, thereby reducing latency and potential points of failure. This service enables users to purchase US local or toll-free numbers via the LiveKit Cloud dashboard or CLI, attach dispatch rules, and go live with minimal setup. The direct connection to upstream carriers ensures more reliable calls and better audio quality, eliminating the need for additional vendor sign-ups or complex configurations. LiveKit offers a free US local phone number and free inbound calling minutes with all plans, along with pay-as-you-go pricing for additional usage. The service is useful for industries relying on phone calls, such as healthcare, insurance, and real estate, facilitating features like 24/7 call routing, order management, and campaign hotlines. LiveKit continues to support third-party SIP providers and plans to expand its offerings to include outbound calling, international numbers, bulk operations, and number porting.