Details
The system uses a custom unified transformer-based large language model trained to translate between any combination of Roblox's 16 supported languages in a single model, rather than maintaining 256 separate translation models for each language pair. Translations are displayed with approximately 100 milliseconds of latency, making them nearly invisible during gameplay. The model was trained on open-source data, Roblox's own in-experience translation data, human-labeled chat results, and common chat phrases, and was fine-tuned to understand Roblox-specific slang (e.g., 'obby,' 'afk'). Users can toggle off automatic translation or click an icon to see the original untranslated message. Roblox has announced plans to extend the model to real-time voice chat translation, starting with English, Spanish, French, and German.
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