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# What's New: Week of June 1, 2026

1. **xAI Speech-to-Text and Text-to-Speech**: xAI is now available as a transcriber (STT) and voice (TTS) provider for assistants.

2. **Upgraded Vapi Voices**: A new text-to-speech model powering [Vapi Voices](https://docs.vapi.ai/providers/voice/vapi-voices) makes them sound more authentic, human, and consistent — at \~50% lower cost.
   * Existing deployments don't change automatically — opt in by setting `version: 2` on the voice configuration via the API or Dashboard. See [Vapi Voices](https://docs.vapi.ai/providers/voice/vapi-voices) for supported voices and audio samples.

3. **Pronunciation Dictionaries in the Dashboard**: The Assistants view now supports creating new [pronunciation dictionaries](https://docs.vapi.ai/assistants/pronunciation-dictionaries) directly from the dashboard.

4. **Phone Number Fixes**: Improvements to phone number creation and listing.
   * The Phone Numbers list no longer breaks on rows with no number or SIP URI.
   * Creating a phone number now validates its Vapi identifier up front.