kaeris

Kaeris is an AI-powered localization tool designed to assist with translating and verifying application strings across 46 languages. It addresses the challenges of ensuring translation accuracy and consistency by translating each string, then translating the result back into the source language to flag potential meaning drift. The platform highlights lines that may require review, shows confidence scores for translations, and helps users catch issues such as text overflow—important for languages that expand beyond the original string length.

resx, allowing users to drop in files without reformatting. js, Angular, Flutter, iOS, Android, Rails, Django, i18next, Godot, and Unity. It offers features like a brand glossary to lock product names across all languages, smart pluralization for languages with complex plural rules, and the ability to provide context or screenshots (with vision AI available on Pro plans) to improve translation relevance. The service also includes a pseudolocalization tool to generate fake locales for UI testing and a format converter for reshaping localization files between supported formats without translation.

Kaeris can be accessed via a web interface, a command-line interface (installable via pip), and integrates with CI/CD pipelines through GitHub Actions and other developer tools. Users can start for free without creating an account, with a free tier supporting up to 10,000 characters and access to core translation and conversion features. Paid plans are available, including Pro and Scale subscriptions, as well as a lifetime option that allows use of a personal OpenRouter key for unlimited translations. Privacy is emphasized, with uploaded files auto-deleted within two hours and no data being sold.

By combining AI translation with verification, file format flexibility, and developer-oriented delivery options, Kaeris is positioned as a comprehensive localization solution for developers and teams managing internationalization workflows.