Grok Text to Speech vs MiniMax H3

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Grok Text to Speech compared with MiniMax H3
Detail	Grok Text to Speech	MiniMax H3
What it does	Free online tool to convert text into natural speech using 28 Grok AI voices in 20 languages	2K video with native stereo audio in one pass
Stage	Not given	Startup
Founded	Not given	2026
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free tier: 3 previews per day (200 characters each) without account; free Google sign-in offers 1,000 characters per clip, 20 clips per hour, 3,000 characters per day. Paid plans available for longer clips and more characters.	On the Hailuo AI App: free tier and paid monthly plans (rates listed in app). On MiniMax Open Platform: billed per output second, with 2K tier priced above 768p tier. On this site: 18 credits per second at 768p and 29 credits per second at 2K, with annual plans showing 50% discount and various month
Key features	28 Grok voices Speech tags for pauses, laughs and whispers Download as MP3 audio file Speed adjustment from 0.7× to 1.5× 26 speech expression tags Free preview without account Auto-detect language mode No text storage or logging Multiple account sign-in options	Multimodal reference input: images, video, and audio Context-IR token-based pricing variant Downloadable weights for local deployment H3-Contextual Omni Representation for modality bridging Up to 12 reference files with caption compression
What makes it different	Independent frontend: no developer account needed to access real Grok voices All 28 official Grok voices in one tool Built-in speech tags for natural expression control Cheaper than ElevenLabs and comparable to OpenAI pricing Same voices available for text-to-speech and voice agents	Only model generating video and audio together natively 2K output at lower per-second rate than competitors Downloadable open weights available Accepts richer multimodal reference input than competitors
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	8 −1 (down) since last check	15 −1 (down) since last check
Trust Flow (Majestic)	8	12
Citation Flow (Majestic)	23	21
Referring domains (Majestic)	13	43

5 details filled in for both companies.

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