Captions.ai vs StreamTranslate

Comparing Captions.ai vs StreamTranslate for live stream subtitles and translation in 2026.

Captions.ai vs StreamTranslate: Feature Comparison

Feature	Captions.ai	StreamTranslate
Latency	2–5 seconds	Under 500ms
Languages	5–15	65 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

About Captions.ai

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.

Why Streamers Switch from Captions.ai to StreamTranslate

No plugin required — just an OBS browser source URL
65 languages — the most of any dedicated stream translation tool
Under 500ms latency — cloud-based architecture with parallel translation race
Any browser — not locked to Chrome
Dual-language subtitles on Pro — unique in the market
Gaming vocabulary — 100+ terms including Twitch emotes and Gen Z slang
From $9.99 — most affordable entry point

How to Switch in Under 5 Minutes

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.

Pricing

Free Plan: 3 hours every month. Card required; no payment unless you choose to upgrade. 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 Plan (3 hours every month) available — card required for the Free Plan; no payment unless you upgrade.

Start Translating Free →

See also: Setup Guide · Pricing · OBS Setup · Stream Translate · Launch App

Frequently Asked Questions

Is StreamTranslate better than Captions.ai?
StreamTranslate outperforms Captions.ai on latency (under 2s), language support (65), 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 65 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.

Captions.ai vs StreamTranslate