Narration Box vs Sumi

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

Narration Box compared with Sumi
Detail	Narration Box	Sumi
What it does	AI voice production platform for creators and teams	AI manga translator that re-letters your language into the art
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free plan: $0/month with 1,000 text-to-speech words, 1 voice clone, 5 projects. Plus: $15/month (20,000 words, 2 clones, 50 projects). Pro: $30/month (45,000 words, 6 clones, unlimited projects). Scale: $75/month (100,000 words, 15 clones). Annual plans get 50% off. Extra words cost $2 per 1,000 on	Free tier: 1 page without account, 5 pages on signup, 5 claimable daily. Pro: $6.99/month (1,500 pages/month). Pro+: $14.99/month (4,000 pages/month). Studio: $39.99/month (12,000 pages/month). Yearly billing available: Pro $69.99/year, Pro+ $149.99/year, Studio $399.99/year.
Key features	Voice cloning from 30 seconds of audio Long-form content support without length limits Multi-speaker and multilingual projects EPUB, PDF, and DOCX audiobook import and parsing Multiple export formats (MP3, WAV, Opus, FLAC, OGG) Commercial usage rights included	Instant page-by-page translation without uploading Works on pages requiring login Text erasing and re-lettering in artwork Native vertical CJK typesetting Offline translation on iPhone and iPad Batch translation up to 20 pages Works on 30 official publisher platforms Chrome, Firefox, Edge and Safari extensions Editable translations in reader
What makes it different	No technical skills required to create professional audio Block-based editing allows precise control and regeneration of individual sections Unlimited long-form content production in one platform Full commercial rights with 100% ownership of generated audio	Erases original text and re-letters into artwork instead of pasting white boxes Translates in-place on pages you're already reading without uploading chapters Fully offline translation on iPhone and iPad with no data leaving device One subscription across web, extensions, and all native apps
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)	34 −1 (down) since last check	18 +1 (up) since last check
Trust Flow (Majestic)	7	7
Citation Flow (Majestic)	37	24
Referring domains (Majestic)	546	70

5 details filled in for both companies.

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