Comparing Captions.ai vs StreamTranslate for live stream subtitles and translation in 2026.
| Feature | Captions.ai | StreamTranslate |
|---|---|---|
| Latency | 2–5 seconds | Under 500ms |
| Languages | 5–15 | 30+ languages |
| No plugin required | Plugin / install needed | Yes — just a URL |
| Browser support | Chrome only or limited | Any browser |
| Dual language subtitles | No | Yes (Pro/Unlimited) |
| OBS Browser Source | Complicated | Paste URL, done |
| Starting price | Higher / subscription only | $9.99 one-time pass |
| Cloud-based (no GPU) | Local processing | 100% cloud |
Captions.ai focuses on post-production video captioning for social media clips. It does not support live streaming or real-time OBS overlays — it is a video editor.
Go to streamtranslate.live/control, start a free trial, copy the OBS browser source URL, and add it to OBS as a browser source. Remove the old Captions.ai source. Done — StreamTranslate is now handling your subtitles.
Stream Pass: $9.99 one-time, 12 hours single language.
Starter: $14.99/month, 25 hours/month single language.
Pro: $34.99/month, 50 hours/month dual-language subtitles.
Unlimited: $149/month, unlimited hours dual-language.
Full details at streamtranslate.live/pricing. Free trial available — no credit card required.
See also: Setup Guide · Pricing · OBS Setup · Stream Translate · Launch App
Is StreamTranslate better than Captions.ai?
StreamTranslate outperforms Captions.ai on latency (under 2s), language support (28+), and ease of setup (no plugin). For live stream translation, StreamTranslate is the better choice for most streamers.
What are the main differences between Captions.ai and StreamTranslate?
StreamTranslate is cloud-based (no plugin, no install), supports 30+ languages with real-time translation, and has dual-language subtitle support. Captions.ai typically requires additional setup and supports fewer languages.
How do I switch from Captions.ai to StreamTranslate?
Go to streamtranslate.live/control, start a free trial, copy the OBS browser source URL, add it to OBS. Migration takes under 5 minutes.
Does StreamTranslate cost more than Captions.ai?
StreamTranslate starts at $9.99 for a 12-hour pass — often cheaper than Captions.ai. Monthly plans start at $14.99.