Grok Text-to-Speech
xAI's expressive text-to-speech model with multiple voices and 20-language support.
From xAI, Grok Text-to-Speech is a cloud text-to-speech model. It converts written text into natural, spoken audio. It offers a choice of 27 voices and supports multiple languages. Output is available as MP3, WAV, FLAC, OGG, PCM, MULAW, and ALAW. It runs through Runware and Replicate using your own API key, from $0.015 per 1,000 characters.
- Released
- 4 months ago (Apr 2026)
- Pricing
- $0.015 / 1k chars
- Type
- Text-to-speech
- Voices
- 27 to choose from
- Languages
- Multilingual
- Output formats
- MP3, WAV, FLAC, OGG, PCM, MULAW, ALAW
Examples
Generated with Grok Text-to-Speech via Replicate — the same three scripts read by every text-to-speech model in the catalog, so the only thing that changes between two models’ clips is the model. Each model uses its own default voice; there is no shared voice to hold constant.
Baseline naturalness and pacing
The last train had already left, but she decided to walk anyway. The city was quieter than she remembered, and for the first time in weeks, she wasn't in a hurry.
Emotion, emphasis, and pauses
Wait — you're telling me it actually worked? After all that? I can't believe it. Honestly, I thought we'd lost the whole thing.
Decimals, percentages, version numbers
The API returned 3,481 results in 0.42 seconds, a 12 percent improvement over version 2.5. Latency at the 99th percentile dropped from 840 milliseconds to 610.
xAI
xAI builds the Grok family — frontier reasoning LLMs plus Grok Imagine video and voice models, integrated with real-time knowledge from X.
x.ai ↗