Compare OBS caption options: built-in plugin, Browser Source + StreamTranslate, LocalVocal. See which delivers the best accuracy and translation support in 2026.
Start Free TrialSetup GuideOBS Studio supports captions through several mechanisms. Understanding the differences helps you pick the right approach for your streaming setup and accuracy requirements.
OBS has a native captions plugin that ships with OBS Studio under Tools → Captions. It uses Google Web Speech API. Setup is simple — enable it, grant microphone access, and captions appear as a source you can add to your scene.
Accuracy: Below average on gaming content. Google Web Speech API was not trained for gaming vocabulary and struggles with slang, rapid speech, and background audio from games. Languages: English only. Translation: None. Cost: Free. Verdict: Acceptable for casual testing. Not suitable for streamers who care about accuracy or international reach.
StreamTranslate is a cloud-based caption and translation service that integrates with OBS via Browser Source. You get a URL from your StreamTranslate dashboard, add it as a Browser Source in OBS, and captions appear on your stream automatically. No plugin installation required.
Accuracy: High — Deepgram Nova-2 gaming-optimized STT. Languages: 50+ with real-time translation. Translation: Automatic to all viewer languages. Twitch Extension: Yes — viewer-toggleable. CPU Impact: Zero — cloud processing. Cost: $9.99/month with free trial. Verdict: Best overall OBS caption solution for streaming in 2026.
LocalVocal is a community OBS plugin that runs OpenAI Whisper locally on your machine. Install it from the OBS plugin repository, configure it with your preferred Whisper model, and it generates captions as an OBS text source.
Accuracy: Medium-high for English — Whisper medium/large model is capable but not optimized for gaming vocabulary. Languages: English primarily. Translation: Basic in some configurations. GPU Required: Yes — NVIDIA 4-8GB VRAM. CPU Impact: High — runs locally. Cost: Free. Verdict: Best free option for English captions if you have a capable GPU.
| Feature | StreamTranslate (Browser Source) | LocalVocal | OBS Built-In Plugin |
|---|---|---|---|
| Gaming Accuracy | High (Nova-2) | Medium (Whisper) | Low (Google) |
| Languages | 50+ with translation | English primarily | English only |
| Translation | 50+ real-time | Basic/no | None |
| GPU Required | No | Yes | No |
| Twitch Extension | Yes | No | No |
| CPU Impact | Zero (cloud) | High (local) | Low |
| Setup Time | 5 minutes | 20-30 minutes | 2 minutes |
| Cost | $9.99/mo | Free | Free |
The fundamental limitation of local OBS plugins for caption translation is that meaningful translation requires calling external APIs — which adds latency, complexity, and often cost. StreamTranslate handles all of this in the cloud, delivering translated captions at sub-500ms without any local processing complexity.
For streamers who want English-only captions and have a capable GPU: LocalVocal is a legitimate free option. For streamers who want real-time translation to 50+ languages, better gaming accuracy, zero GPU requirement, and a Twitch extension: StreamTranslate Browser Source approach wins comprehensively. Start with the setup guide.
For English-only captions with a capable GPU, LocalVocal is the best free plugin. For gaming accuracy, 50+ language translation, and Twitch extension: StreamTranslate via Browser Source is the best overall OBS caption solution.
Yes. OBS has a built-in captions plugin under Tools using Google Web Speech API. It is English-only, has limited gaming accuracy, and no translation capability.
LocalVocal is a community OBS plugin that runs OpenAI Whisper locally. It is free and produces reasonable English captions. Requires a capable NVIDIA GPU (4GB+ VRAM) and adds local processing load.
No. StreamTranslate works via OBS Browser Source — just add the URL as a browser source. No plugin download or installation required.
StreamTranslate Browser Source — it translates your captions to 50+ languages in real time. The OBS built-in plugin and LocalVocal are primarily English-only.