LangChain AI Updates: July 22, 2026

1. LangSmith Adds Tracing For Voice Agent Frameworks

LangChain. LangChain shipped LangSmith Python integrations that trace four voice agent frameworks: Pipecat, LiveKit, OpenAI Realtime, and Gemini Live with Google ADK. The tracing captures voice-specific signals such as audio recordings, speech-to-text and text-to-speech latencies, voice activity detection events, and interruption detection, and it supports both the sandwich architecture (STT to text agent to TTS) and native speech-to-speech models. For teams building voice applications, it brings text and voice agents into a single trace view under the same review and collaboration workflows. Source