Grok Voice API for STT and TTS Announced

On April 18, 2026, @LouiseGiam posted an announcement of the Grok Voice API.

We couldn’t wait until 4/20 to announce it! Grok Voice API for STT and TTS $4.20 per million characters TTS

What was announced

• Grok Voice API supporting STT and TTS capabilities.
• TTS pricing set at $4.20 per million characters.

Context

Grok is the AI system developed by xAI. Voice features have appeared among xAI product references alongside other tools such as Imagine and connectors.

Limits of this report

This article reports only the details stated in the source post and does not include information on STT pricing, availability, access methods, or future plans.

Source

@LouiseGiam on X: https://x.com/LouiseGiam/status/2045301818016883077