2026 04 20 Grok Voice Thread
Did xAI just mass-murder the entire voice AI industry? Grok just launched two voice APIs. Speech-to-Text and Text-to-Speech. Built on the
view source ↗Vaibhav Sisinty @VaibhavSisinty 2026-04-18
Did xAI just mass-murder the entire voice AI industry? 🤯
Grok just launched two voice APIs. Speech-to-Text and Text-to-Speech.
Built on the same stack powering Tesla cars and Starlink support.
And priced at 10x cheaper than ElevenLabs.
Speech-to-Text: $0.10/hr batch. $0.20/hr streaming.
Text-to-Speech: $4.20 per million characters.
25+ languages. Real-time streaming. Speaker diarization.
Already outperforming ElevenLabs, Deepgram, and AssemblyAI on word error rate.
TTS ships with expressive tags like [laugh], [sigh], <whisper>, <emphasis>.
Voices that don't sound like robots reading a script.
ElevenLabs spent years building a voice AI company.
xAI built voice AI for cars and satellites.
Vaibhav Sisinty @VaibhavSisinty 2026-04-19
Video credits : @birdabo
Sorry for the late credits my friend, geniunely thought it was the video released by xAI team ( since your profile said SpaceX )
Incredible work with the video !
sui @birdabo 2026-04-19
another mf yoinked my video without credit, smh.
you can use the “post video” feature if you don’t want wanna credit btw, it automatically does it.
Vaibhav Sisinty @VaibhavSisinty 2026-04-19
Hey, genuinely sorry about this 🙏
I honestly thought it was an official xAI video, the narration sounded official and your profile mentioning SpaceX threw me off completely.
Only realised my mistake after seeing your comment.
Just added a follow-up tweet giving you full
Andy Roberts @AndyLRoberts 2026-04-20
Have you been watching the open source TTS and STT models coming out in the last month? It has been 1,000 cuts to Eleven Labs already. XAI sounds on par with the latest Chinese models. Lots of choices. Name Rec and ease of use will be the differentiator as everyone gets more
Wei Ran @WeiRan573620 2026-04-20
It would be great if this TTS could import audio samples for custom voice! 💪
the fool says there is no God @EcceHomoVMDA 2026-04-19
@grok is there a way I can access this on the web or on the grok / x app ?
paul caldwell @paulcaldwell 2026-04-20
And the beat goes on. xAI will continue making competitors less relevant over the coming 30 months. Lots of things coming. Also winning the sheer power race at scale.
word of speech news @AlimiC44509 2026-04-19
“Outperforming on word error rate” sounds impressive, but performance varies heavily by accents, noisy audio, domain-specific vocabulary, and real-time constraints. Independent benchmarks over time matter more than launch claims.
Everything AI @EverythingAI6 2026-04-20
Grokai is winning only in Elon's tweets. It's lagging in every field.
RAJAT @rajatdatta099 2026-04-19
And big sharks eating the small fishes
