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Captions vs Synthesia: Complete Comparison 2026

Select a category, then compare up to 3 tools side by side. Analyze features, pricing, and performance.

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Video20 tools available
Captions
Captions

AI video editor with automatic subtitles and avatars

Captions is the AI video editing app for creators. Auto-subtitles in 100+ languages, AI avatars, digital twins, and chat-based editing. Perfect for TikTok, Reels, and Shorts.

Strengths

  • Ultra-accurate auto-subtitles in 100+ languages
  • Realistic AI avatars and digital twins
  • Video editing via natural language instructions
  • Trendy pre-configured subtitle styles

Limitations

  • Monthly pricing without visible annual option
  • AI features limited on free plan
  • Primarily designed for mobile (iOS)
  • Credit system can be limiting

Pricing plans

  • Basic editing (trim, transitions)
  • 1 caption template
  • Media library assets
  • Watermark on exports
  • Captions in 100+ languages
  • Customize caption styling
  • Watermark-free exports
  • Fast fixes to footage
  • All Pro features
  • AI Edit styles library
  • AI-produced videos
  • Digital twins & custom AI actors
  • Chat-based editor
  • Generate B-roll, music, SFX, images
  • All Max features
  • Customized usage tiers
  • Most sophisticated AI models
  • Priority processing
Synthesia
Synthesia

Create professional videos with AI avatars in minutes

Synthesia is the leading AI video generation platform. It enables creating professional videos with realistic AI avatars, without cameras or studios. Perfect for training, marketing, and internal communications, Synthesia transforms simple text into multilingual videos in just a few clicks. Over 60,000 companies, including 90% of the Fortune 100, use Synthesia to create video content at scale while reducing production costs by up to 80%.

Strengths

  • Ultra-realistic AI avatars with perfect lip sync
  • 140+ languages and accents available
  • Intuitive interface, 90% of users publish without tutorial
  • One-click automatic translation to 80+ languages

Limitations

  • Avatars sometimes stiff, limited facial expressions
  • Video credits limited by plan
  • Custom avatars expensive ($1,000/year add-on)
  • Less suited for creative consumer content

Pricing plans

  • 1 éditeur
  • 9 avatars IA
  • 3 minutes de vidéo/mois
  • Voix IA en 140+ langues
  • Templates de base
  • 1 éditeur + 3 invités
  • +125 avatars Synthesia
  • Téléchargement des vidéos
  • Assistant vidéo
  • Doublage IA (120 min/an)
  • Suppression du logo Synthesia
  • Support chat/email
  • 1 éditeur + 5 invités
  • 5 avatars personnels
  • +180 avatars Synthesia
  • Doublage IA (360 min/an)
  • Pages vidéo personnalisables
  • Accès API
  • Plusieurs avatars par scène
  • Vidéos interactives
  • Support prioritaire
  • Minutes illimitées
  • Traduction 1-clic en 80+ langues
  • +230 avatars libres de droits
  • Avatars personnels illimités
  • SAML/SSO
  • Collaboration temps réel
  • Kits de marque
  • Export SCORM
  • Doublage IA (extension)
  • Intégration sur mesure
  • Services de déploiement
  • CSM dédié

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General overview

Criterion
Captions
Synthesia
AI typeAI NativeAI Native
Country of origin🇺🇸 United States🇬🇧 United Kingdom
Year founded20212017
Supported languages100+ languages140+ languages
Free plan
Yes
Yes
API available
Mobile app

Detailed comparison

FeatureCaptionsSynthesia
Video Cutting
Image to video
Magic Clips
Motion brush
B-Rolls
Lip sync
AI Video Translator
Virtual try-on
AI Eye Contact
Camera controls
Auto Zoom
Video extension
Images & GIFs
Transitions
Sound Effects
Background Music
Auto Description
AI Video Editor
Silence Removal
Animated Subtitles
Brand Kit
Local recording
Separate tracks
Live streaming
Multistream
Podcast publishing
Webinar mode
Max participants
Audio quality
AI Denoise (background noise removal)
HD audio with AI voice synthesis
Max video duration
30 minutes
60 minutes
Max Resolution
4K
1080p
AI Avatars
Text to Video
Auto-subtitles
Voice cloning
Video Library
No Watermark
Export formats
MP4
MP4
Batch Processing
Available
Not available
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