What are the closest alternatives to Grok TTS?

The closest alternatives are Suno v5.5 by Suno, MiMo-V2-TTS by Xiaomi and GPT Realtime Whisper by OpenAI. They were matched on model kind and release date, with no comparable price.

Who made Grok TTS and when was it released?

Grok TTS was made by xAI and released on March 16, 2026.

Grok TTS

xAI

Announcement

Grok TTS

Developer	xAI
Release date	March 16, 2026
Family	Grok
Input	Text
Output	Audio
Weights	Closed
Website	x.ai

Part of a series on

xAI

Pricing: Not published
Released: 8mo ago

Grok TTS is a text-to-speech model from xAI that the maker says is built on the same audio stack behind Grok Voice, Tesla vehicles, and Starlink customer support. The launch announcement centers on fast, natural, and expressive voices with fine-grained control, delivered through inline speech tags such as laugh, sigh, or whisper to shape prosody and emotion. It is built for turning long-form text into speech in applications like voice agents, podcasts, accessibility tools, and interactive audio experiences.

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Additional source evidence

Source model: xai/grok-tts
Source type: speech
Last updated: 2026-03-16
Model context: 15K
Model output limit: 15K
Open weights: No
File attachments: No
Reasoning: No
Tool calling: No
Temperature control: No

Complete source record (JSON)

{
  "id": "xai/grok-tts",
  "name": "Grok TTS",
  "description": "Convert text into spoken audio with a single API call. The API supports a rich set of expressive voices, inline speech tags for fine-grained delivery control, and output formats from high-fidelity MP3 to telephony-optimized μ-law.",
  "type": "speech",
  "last_updated": "2026-03-16",
  "attachment": false,
  "reasoning": false,
  "tool_call": false,
  "temperature": false,
  "modalities": {
    "input": [
      "text"
    ],
    "output": [
      "audio"
    ]
  },
  "limit": {
    "context": 15000,
    "output": 15000
  },
  "release_date": "2026-03-16",
  "open_weights": false
}