SMRTR AIMay 9, 2026Hacker News

Grok TTS vs. OpenAI

SMRTR summary

A head-to-head comparison of xAI's Grok TTS and OpenAI's newest voice model shows xAI winning across most real-world scenarios. In blind listening tests covering GPS navigation, emergency alerts, and dramatic narration, xAI won 20 out of 30 pairs, with voices sounding more natural. Pricing heavily favors xAI too, at $4.20 per million characters versus OpenAI's significantly higher token-based costs.

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