Grok TTS Review
Usage-priced hosted TTS from xAI, part of the Grok Voice stack (TTS, STT, and a speech-to-speech Voice Agent API), aimed at developers who want low-latency voice output alongside Grok models.
Among the 16 text-to-speech tools we track, Grok TTS has the 3rd-cheapest flagship rate - a fit for cost-sensitive, high-volume work.
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What we know about Grok TTS
This is our verified profile of Grok TTS, a text-to-speech apis platform - usage-priced hosted TTS from xAI, part of the Grok Voice stack (TTS, STT, and a speech-to-speech Voice Agent API), aimed at developers who want low-latency voice output alongside Grok models. Every fact about Grok TTS below carries the source it came from and the day we checked it.
Grok TTS does not publish a public per-minute rate we have been able to verify, so the price figure here stays blank until we can confirm one. We would rather show nothing than a guessed number; if you have a current Grok TTS quote, it is the fastest way for us to close that gap.
On capabilities, Grok TTS covers streaming audio output, realtime websocket api, instant voice cloning, and emotion / style controls, and does not offer self-host / on-prem option. Each of those is verified against Grok TTS's own docs or dashboard, not marketing copy.
Grok TTS ranks the 3rd-cheapest flagship rate of the 16 text-to-speech tools we track, but only 14th of 16 for stock voices, so where it lands for you depends on which of those matters more.
In total we track 12 verified facts for Grok TTS today, each linking the primary source it came from so you can check our work - and vendor claims we have not measured ourselves are labeled as such on the Grok TTS fact sheet below.
Reviewed by vsref Editorialfacts verified Jul 20, 2026Methodology →
Grok TTS pricing
Usage-priced at $15 per 1M characters (≈ $0.0143 per audio-minute), verified Jul 20, 2026 (source).
| Monthly volume | $ / 1M chars | $ / audio-min | Monthly bill |
|---|---|---|---|
| 200K chars/moHobby project | $15 | $0.0143 | $3 |
| 2M chars/moProduct feature | $15 | $0.0143 | $30 |
| 20M chars/moAt scale | $15 | $0.0142 | $300 |
Effective rates from published pricing; subscription plans resolve to plan fee plus overage. ~950 characters ≈ 1 audio minute. How we compute costs →
Fact sheet
Every row independently verifiedConsidering a switch? Best Grok TTS alternatives →
STT in this stack
Text-to-speech is half of a voice pipeline: the other half is the speech-to-text that listens. Compare transcription engines on accuracy, streaming latency, and per-minute price: Deepgram, AssemblyAI, GPT-4o Transcribe, or the full speech-to-text comparison →
Voice agents in this stack
The engine is one layer: a voice agent speaks through its text-to-speech engine, but orchestration, telephony, and turn-taking come from the agent platform. Compare the platforms builders pair Grok TTS with: Pipecat, OpenAI Realtime API, Twilio ConversationRelay, or the full voice-agent comparison →
Distribute it
Most Grok TTS voiceover ends up in short-form video, and publishing that video across TikTok, YouTube, and Instagram is a scheduling problem with real per-channel pricing. Compare the schedulers creators actually run: Buffer, Postiz, Mixpost, or the social media scheduling platforms compared →
Avatar video in this stack
A cloned or bring-your-own Grok TTS voice does not have to stay audio-only: AI avatar video platforms lip-sync it onto a talking avatar for finished video. Compare the platforms: HeyGen, Synthesia, Hedra, or the full avatar-video comparison →