Head to head · Video · updated Oct 15, 2026
Captions vs Synthesia
Captions scores 30 to Synthesia's 23 on public evidence for AI avatars & talking-head video, and they rank #1 and #3 there. Both are free to start. Numbers below are the same public signals the ranking uses, recomputed nightly — nothing here is sponsored.
Captions
Creator video app with AI captions, eye-contact correction, dubbing with lip sync and AI avatars (Mirage).
+ Eye-contact correction and lip-synced dubbing work well on phone-shot talking-head video.
− The subscription is expensive relative to CapCut and many effects feel gimmicky.
Synthesia
Enterprise AI video platform that turns scripts into presenter-led videos with stock or custom avatars in 140+ languages.
+ Mature enterprise features (SCORM export, brand kits, SOC 2, collaboration) for training content at scale.
− Avatars look corporate and the free/starter tiers allow only a few minutes of video per month.
Side by side
public evidence| Captions | Synthesia | |
|---|---|---|
| Evidence score / 100 | 30 | 23 |
| GitHub stars | closed source | closed source |
| Hacker News stories, 30d | 5 | 3 |
| Release-feed mentions, 30d | 0 | 0 |
| Last activity | – | – |
| Pricing | Free tier | Free tier · from $18/mo |
| Platforms | ios, android, web, mac | web, api |
| Maker | Captions | Synthesia |
Which one?
Pick Captions if
- you want the stronger public evidence (30 vs 23)
- you need it on android, ios, mac
Best for solo creators polishing talking-head clips.
Pick Synthesia if
- you need it on api
Best for corporate training and onboarding videos.