The OBS captions plugin is English-only with basic accuracy. StreamTranslate is a cloud alternative with 50+ languages, no CPU load on your streaming PC, and Deepgram Nova-2 gaming accuracy.
Start Free TrialSetup GuideOBS Studio has a built-in captions plugin that uses Google Web Speech API to produce real-time captions from your microphone. It is free, requires no subscription, and integrates directly into OBS. For a streamer who needs basic English captions and does not want to pay for anything, it is a functional starting point.
The limitations are significant. English only — no other languages, no translation. Accuracy on gaming vocabulary is inconsistent — the Google Web Speech API was not trained on gaming audio and misrecognizes game-specific terminology regularly. There is no real-time translation capability, so international viewers get no benefit. And the plugin runs locally, consuming some CPU resources from your streaming PC.
StreamTranslate is a cloud-based caption and translation service that replaces the OBS plugin workflow with something more capable. Instead of a local plugin running on your PC, StreamTranslate processes your audio in the cloud on Deepgram Nova-2 servers. The result comes back as a browser source overlay that you add to OBS — no OBS plugin required, no local processing.
The advantages over the OBS plugin: better accuracy on gaming vocabulary, real-time translation to 50+ languages, zero CPU impact on your streaming PC, a native Twitch extension, and support for all major streaming platforms.
| Feature | StreamTranslate | OBS Captions Plugin |
|---|---|---|
| Price | $9.99/mo (free trial) | Free |
| Languages | 50+ with translation | English only |
| Gaming Accuracy | High — Deepgram Nova-2 | Limited — generic API |
| PC CPU Impact | None — cloud processing | Some local CPU usage |
| Real-Time Translation | Yes — automatic | No |
| Twitch Extension | Yes | No |
| Latency | Sub-500ms | Variable — depends on PC |
Google Web Speech API is a general-purpose speech recognition service. It handles normal English conversation reasonably well but struggles with gaming-specific terms: hero names, ability names, game titles, streamer slang, and the rapid reactive speech that characterizes gaming commentary. This is not a criticism of Google — Web Speech API was not built for gaming streams.
Deepgram Nova-2 was trained specifically on conversational and entertainment audio. It handles gaming vocabulary with demonstrably higher accuracy. For a streamer whose content is primarily gaming, the accuracy difference alone justifies the $9.99/month investment in StreamTranslate.
Streaming is already CPU and GPU intensive. Running OBS at 1080p60, encoding to H.264 or AVC, and simultaneously running a game taxes most mid-range systems. Adding a local caption processing plugin increases that load further. StreamTranslate moves all audio processing to the cloud. The Browser Source URL is lightweight — no different in resource terms from any other browser source you might have on your scene. Your streaming PC processes nothing extra.
Remove or disable the OBS captions plugin in your OBS setup. Visit the StreamTranslate setup page, copy your Browser Source URL, and add it as a Browser Source in OBS. Position it on your scene. That is the complete migration — takes under 3 minutes.
Yes — the OBS built-in captions plugin is free. StreamTranslate costs $9.99/month but adds translation to 50+ languages, better gaming accuracy, no CPU impact, and a Twitch extension.
The OBS captions plugin uses Google Web Speech API which is configured for English in the plugin. StreamTranslate uses Deepgram Nova-2 and supports 50+ languages with real-time translation.
No — less. StreamTranslate processes audio in the cloud. The Browser Source has minimal resource impact. The OBS plugin processes locally and uses some CPU.
You can but there is no reason to — they do the same thing. Switch to StreamTranslate to get better accuracy and translation capabilities.
No. StreamTranslate works as an OBS Browser Source — no plugin installation required. Just add the URL as a browser source in OBS.