Google launches TranslateGemma, open translation models supporting 55 languages

Google released TranslateGemma, a set of open-source translation models that work across 55 languages. The collection comes in three sizes—4B, 12B, and 27B parameters—designed to run on different devices from smartphones to cloud servers.

The 12B model outperforms Google’s 27B baseline on the WMT24++ benchmark while using less than half the computing power. For developers, this means you can run quality translation locally on a laptop instead of routing everything through cloud APIs. The 4B version matches the 12B baseline’s performance, making it practical for mobile apps that need offline translation.