Changelog

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April 5, 2025
  1. Introducing SmsSendTool for SMS messaging support: You can now create and send sms text messages using the new [Send Text](https://api.vapi.ai/api#:~:text=SmsSendTool) tool, enabling assistants to send SMS messages via defined servers.
SmsSendTool
Send SMS with 'Send Text' tool

  1. Eleven Labs Voice Auto Mode and Confidence Threshold configuration options: When using Eleven Labs Voice in your Assistant, you can now configure autoMode (default: false) to automatically manage manage chunking strategies for long texts; Eleven Labs automatically determines the best way to process and generate audio, optimizing for latency and efficiency. Additionally, confidenceThreshold has been introduced in transcriber schemas, allowing developers to set thresholds to discard low-confidence transcriptions and improve accuracy.

  2. Changes to CartesiaExperimentalControls Speed property: The speed property now accepts both predefined speeds ('slowest', 'slow', 'normal', 'fast', 'fastest') and numeric values between -1 and 1. This simplifies the process of controlling the speed of the generated audio with Cartesia.