Service for text translation via the Translator Text API ranges from a free tier supporting two million characters per month to paid tiers supporting billions of characters per month.

This system was based on semantic predicate-argument structures known as logical forms (LF) and was spun from the grammar correction feature developed for Microsoft Word.

This system was eventually used to translate the entire Microsoft Knowledge Base into Spanish, French, German, and Japanese.

Microsoft's experience with the LF system led directly to a treelet translation system that simplified the LF to dependency trees and eventually to an order template model, significantly improving in speed and enabling the incorporation of new target languages.

[citation needed] In 2011, the service was extended to include numerous Microsoft Translator products through a cloud-based application programming interface, which supports products available to both consumer and enterprise users.

Neural networks provide better translation than industry standard statistical machine learning.

[17] The Hub has been used to create translation systems for languages such as Hmong, Mayan, Nepali, and Welsh.

The Multilingual App Toolkit (MAT) is an integrated Visual Studio tool, which allows developers to streamline localization workflows of their Windows, Windows Phone and desktop apps.

[18] MAT improves localization of file management, translation support, and editing tools.

When translating an entire web page, or when the user selects "Translate this page" in Bing search results, the Bilingual Viewer is shown, which allows users to browse the original web page text and translation in parallel, supported by synchronized highlights, scrolling, and navigation.

[21] Four Bilingual Viewer layouts are available:[21] Bing Translator integrates with several other Microsoft products.

[3][25] The list of supported languages is available at the Microsoft Translator website and can also be retrieved programmatically through the cloud services.

[26] As of February 2025, Microsoft Translate supports 76 languages for the text-to-speech tool.

[27] Additionally, Microsoft has teamed with the Klingon Language Institute, which promotes the constructed language, Klingon, which is used within the fictional Star Trek universe produced by Paramount and CBS Studios.