Head to head · Video · updated Oct 27, 2026
Captions vs AssemblyAI
Captions scores 64 to AssemblyAI's 39 on public evidence for subtitles & captions, and they rank #3 and #4 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.
AssemblyAI
A speech-to-text API with diarization, sentiment, chapters and an LLM layer for summarizing transcripts.
+ Strong accuracy plus built-in audio intelligence (speaker labels, chapters, PII redaction) and LeMUR for asking questions of a transcript.
− No consumer app, and per-hour pricing adds up on high volumes compared with self-hosted Whisper.
Side by side
public evidence| Captions | AssemblyAI | |
|---|---|---|
| Evidence score / 100 | 64 | 39 |
| GitHub stars | closed source | closed source |
| Hacker News stories, 30d | 7 | 5 |
| Release-feed mentions, 30d | 8 | 0 |
| Last activity | 2 days ago | – |
| Pricing | Free tier | Free tier · Free credits; then per hour of audio |
| Platforms | ios, android, web, mac | api |
| Maker | Captions | AssemblyAI |
Which one?
Pick Captions if
- you want the stronger public evidence (64 vs 39)
- you need it on android, ios, mac
Best for solo creators polishing talking-head clips.
Pick AssemblyAI if
- you need it on api
Best for developers building transcript analysis.