IndexTTS2 vs Flux3Max.io

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

IndexTTS2 compared with Flux3Max.io
Detail	IndexTTS2	Flux3Max.io
What it does	Production-ready text-to-speech with precise duration control and emotional expression	AI video generator that creates 5-20 second videos with sound from text, photos, or keyframes
Stage	Not given	Startup
Founded	Not given	2026
Based in	Not given	US
Pricing model	Freemium	Paid
Pricing	Free: $0/month with 20,000 characters per month and 3 custom voices. Pro: $14.99/month with 1,000,000 characters per month and 20 custom voices.	Pay per second with one-time credit packs: Starter $9.90 (1,000 credits, ~5 clips at 720p), Basic $19.90 (2,100 credits, ~11 clips), Plus $39.90 (4,400 credits, ~24 clips), Pro $79.90 (9,200 credits, ~51 clips), Studio $149.90 (18,000 credits, ~100 clips). A 5-second 720p video costs 180 credits; 10
Key features	Precise timing control with exact token specifications Rich emotional range including joy, tranquility, anger, and anxiety Voice-emotion separation for independent control Natural language emotion shaping powered by Qwen3 Eight-dimensional emotion vectors (happy, angry, sad, afraid, disgusted, melancholic, surprised, calm) Custom voice uploads and recordings (up to 20 on Pro plan) Commercial use rights on Pro plan Support for English and Chinese languages MP3 and WAV audio format output Priority processing for Pro users	Text-to-video generation Image-to-video with optional last frame Up to 10 keyframes per video Generated audio synthesis 5-20 second video length 720p and 1080p resolution Multiple aspect ratios Fast generation under one minute No subscription, pay-per-second pricing Failed videos are free
What makes it different	Not given	Speeds up video generation to 12 seconds for a 10-second 720p clip Keyframes mode for precise story control Sound generation included with video No subscription or credit expiration Free first clip and refundable credits
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)	14 +1 (up) since last check	8 +5 (up) since last check
Trust Flow (Majestic)	8	1
Citation Flow (Majestic)	18	13
Referring domains (Majestic)	12	1

4 details filled in for both companies.

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