Stop Killing Your CPU.
Get Cloud-Based OBS Translation.
Last updated: March 2026
TL;DR
Polyglot OBS is a free open-source plugin that runs translation models locally on your PC. It works, but it's CPU-heavy, quality is limited by local models, and setup takes a while. StreamTranslate is cloud-based — zero CPU load, 28+ languages, instant setup, 6-hour free trial. If your PC struggles with Polyglot OBS or you want better quality, switch to StreamTranslate.
Polyglot OBS vs StreamTranslate — Full Comparison
| Feature | Polyglot OBS | StreamTranslate |
|---|---|---|
| Cost | Free (open source) | Free trial → from $14.99/mo |
| CPU/GPU load | High — runs models locally | Zero — 100% cloud |
| Works on low-end PC | Struggles without good hardware | Yes — any PC that runs OBS |
| Translation quality | Limited by local models | Cloud AI — high accuracy |
| Languages | Limited (CTranslate2 models) | 10+ with active development |
| Setup | Plugin install + model download | Paste URL in OBS — done |
| Setup time | 15–30+ minutes | 2 minutes |
| Updates & support | Community-maintained | Active development, paid support |
| Free trial | Free (open source) | 6 hours, no credit card |
| OBS Browser Source | Plugin (different approach) | Browser Source — no plugin needed |
To be fair: Polyglot OBS is free and keeps your audio data local, which some streamers prefer for privacy. If privacy is your top concern and you have a powerful PC, it's a valid choice.
Why Streamers Switch from Polyglot OBS
- Polyglot OBS eats CPU/GPU — leaves less headroom for your game and encoding
- Local model downloads can be 1–4GB+ per language pair
- Setup requires installing an OBS plugin, downloading models, and configuring paths
- Translation accuracy is noticeably lower than cloud-based alternatives
- Limited language support compared to cloud services
- Community-maintained — bugs may take weeks to fix
StreamTranslate Advantages for OBS Streamers
- Zero CPU load — all processing happens in our cloud, not your PC
- Instant setup — add a Browser Source in OBS, paste the URL, done
- 28+ languages — English, Spanish, French, Portuguese, Russian, Japanese, Korean, Chinese, Arabic, Hindi, German
- High accuracy — cloud AI models far exceed local CTranslate2 models
- No plugin install — works as a native OBS Browser Source
- Works on any PC — even a budget streaming machine handles it fine
- Actively maintained — new features, language updates, bug fixes regularly
How to Switch from Polyglot OBS to StreamTranslate
- Go to streamtranslate.live/control
- Select your input language and translation target
- Copy your unique overlay URL
- In OBS: delete or disable your Polyglot OBS source
- Add a new Browser Source and paste the StreamTranslate URL
- Resize and position — you're done
Your CPU will immediately thank you. StreamTranslate adds zero load to your streaming PC.
Free Your CPU. Try StreamTranslate for Free.
6-hour free trial. No plugin install. No credit card. Zero CPU load on your streaming PC.
Start Free — No Downloads, No Plugins View PricingFrequently Asked Questions
What is Polyglot OBS?
Polyglot OBS is a free open-source OBS plugin that provides real-time speech translation using local CTranslate2 models. It runs entirely on your PC, which means it requires significant CPU or GPU resources and translation quality is limited by the local models it uses.
Is Polyglot OBS free?
Polyglot OBS is free and open-source. However, it requires a powerful PC to run well and the translation quality is limited compared to cloud-based services. StreamTranslate offers a free 6-hour trial with higher-quality cloud translations.
Does Polyglot OBS work on a low-end PC?
Polyglot OBS can struggle on lower-end hardware because it runs translation models locally. StreamTranslate is cloud-based and adds zero CPU/GPU load to your streaming PC — it works on any machine that can run OBS.
How many languages does Polyglot OBS support?
Polyglot OBS supports a limited number of languages based on available CTranslate2 models. StreamTranslate supports 28+ languages including English, Spanish, French, Portuguese, Russian, Japanese, Korean, Chinese, Arabic, Hindi, and German.
What is a good Polyglot OBS alternative?
StreamTranslate is the best Polyglot OBS alternative. It's cloud-based (no CPU load), supports 28+ languages, and requires zero setup beyond pasting a URL in OBS. It offers a 6-hour free trial and plans start at $14.99/mo.