Best AI Translation Tools for Windows (2026): Audio and Text

TL;DR: To translate audio while it plays, such as a call, a video, a game or a stream, StreamVox listens to any app on a Windows 10 or 11 PC and shows live AI subtitles over it, in any of 69 languages, with 15 free minutes a day. For text, documents and websites, there are Google Translate, DeepL and Microsoft Translator. DeepL Voice translates calls in Microsoft Teams, Zoom Meetings and Google Meet and in-person conversations, and on a Copilot+ PC, the live captions in Windows 11 translate audio into English or Chinese (Simplified). The table and the details are below.

AI translation in 2026 is really two jobs. One is text: documents, emails and web pages. The other is speech: what people say in a meeting, a video or a voice chat, translated while they are still talking and shown as live subtitles. This guide compares five tools you can use on a Windows PC by what each one translates, so you can match the tool to what you actually need to translate. StreamVox is our own app, and the order of the list is not a ranking. What it says about Google Translate, DeepL, Microsoft Translator and Windows comes from their official pages, linked in each section and checked in October 2026.

At a Glance

Five AI Translation Tools for Windows

StreamVox: Live Subtitles for Audio From Any App

StreamVox translates audio in real time. It captures the sound of the whole system or of one app, translates it with AI, and shows live subtitles in a floating overlay on top of any window. It needs nothing from the meeting platform, because it works with the sound your PC already plays.

• Use it for: live translation of any audio: calls, video, games, streams
• Languages: 61 for live translation, plus a Conversation mode that follows both sides of a bilingual conversation on one screen: 10 curated languages on a single audio source, or all 61 when you add computer sound to the microphone on a call (with a headset)
• Price: free tier (15 minutes a day), then paid plans from $8.99/month: Pro, Pro+, and Unlimited
• Also: floating subtitle overlay on top of any window (for exclusive-fullscreen games, switch to Borderless mode), can read translations aloud in many languages (text-to-speech), and audio is never stored
• Platforms: Windows 10 and 11, Mac (macOS 15 or newer) and iPhone (iOS 17 or newer), with one subscription for all three; iOS does not pass call audio to third-party apps, so calls are subtitled on Windows and Mac

It is made for Zoom and Teams meetings, anime and foreign films, and game voice chat. If you want a deeper feature-by-feature breakdown against a transcription tool, see StreamVox vs Otter.ai.

Google Translate: Text, Documents and Websites

According to Google's Translate page and its help (checked in October 2026), Google Translate translates text, images, documents and websites, and translated files keep their formatting. On a Windows PC you use it in the browser, where Google's help counts more than 200 languages for text, speech and websites, and you can translate by speech by saying words and phrases into the microphone: in Google's words, this works in Chrome, with limited support in Safari and Edge. Google's own description of translate.google.com calls the service offered free of charge. For the Google Translate app on Android and iPhone, Google's help also describes conversation translation and Transcribe, which translates someone speaking in near real time.

• Use it for: text, documents, images and websites
• Languages: more than 200, by Google's count
• Price: free of charge, in Google's words
• Speech: words and phrases you say into the microphone; conversations and Transcribe in the mobile app

DeepL: Text, Documents and DeepL Voice

According to DeepL's translator page (checked in October 2026), DeepL translates text in 100+ languages and translates PDF, Word and PowerPoint files while preserving their original formatting and layout. It has a free version next to paid plans, and DeepL for Windows translates text you select with a Ctrl+C+C shortcut. For speech there is DeepL Voice: live translated subtitles and voice-to-voice translation in Microsoft Teams, Zoom Meetings and Google Meet calls. DeepL lists live subtitles in 40+ languages, and its meetings page says the captions can be translated into any language available in DeepL Translator. DeepL Voice also has a desktop app for Windows and Mac (DeepL notes that Intel Macs are not supported), and DeepL Voice for In-Person Conversations runs on iOS, Android and the web. DeepL Voice is sold in its own Voice plans: on DeepL's pricing page, Voice Starter, for individuals and teams, can be tried free for 14 days.

• Use it for: text and documents; Teams, Zoom and Google Meet calls and in-person conversations with DeepL Voice
• Languages: 100+ for text; DeepL Voice live subtitles in 40+, with captions translatable into any DeepL Translator language
• Price: free version and paid plans; DeepL Voice in Voice plans, with a 14-day free trial of Voice Starter

Microsoft Translator: Office and the Mobile Apps

According to Microsoft's Office support page (checked in October 2026), the Translate feature works in Word, Excel, OneNote, Outlook and PowerPoint. Microsoft's note says that in Word, Excel and PowerPoint it is available to Microsoft 365 subscribers and Office 2021, and Word can turn a whole document into a translated copy. The Microsoft Translator apps for Android and iOS translate text, speech and photos, translate text offline with downloaded language packs, and have a split-screen mode in which two people speak two languages into one device. In the apps you can also host or join a live translated conversation, which others can join in a web browser on a desktop or a phone, and Microsoft's help says the Translator app is free of charge.

• Use it for: documents and emails inside Office; text, speech, photos and live conversations on a phone
• Languages: listed for each feature on Microsoft's languages page
• Where: Translate in Word, Excel and PowerPoint with Microsoft 365 or Office 2021, and in OneNote and Outlook; Translator apps for Android and iOS, free of charge in Microsoft's words

Live Captions in Windows 11: Translation on Copilot+ PCs

Windows 11 has captions of its own. According to Microsoft's support page on live captions (checked in October 2026), live captions turn the audio that passes through your PC into captions, in Windows 11 version 22H2 and later. Translation needs a Copilot+ PC running Windows 11 version 24H2 or later: there, live captions translate any live or pre-recorded video in any app from over 40 languages into English and from 27 languages into Chinese (Simplified). The audio is processed on the device, and captions keep working without an internet connection.

• Use it for: captions of what your PC plays, translated into English or Chinese (Simplified) on a Copilot+ PC
• Languages: over 40 into English, 27 into Chinese (Simplified)
• Where: built into Windows 11; translation on Copilot+ PCs with version 24H2 or later

How to Choose

• Translating live audio from any app (calls, video, games, streams)? StreamVox subtitles the sound of any app on a Windows 10 or 11 PC as it plays, in any of 69 languages.
• Meetings in Microsoft Teams, Zoom or Google Meet? DeepL Voice works inside those three.
• A Copilot+ PC, and you read English or Chinese (Simplified)? Windows 11 live captions translate on the device.
• Documents where the layout matters? DeepL and Google Translate both translate files and keep their formatting, in their own descriptions.
• Quick text or a whole web page? Google Translate works in the browser.
• Working inside Office all day? The Translate feature in Word, Excel, OneNote, Outlook and PowerPoint uses Microsoft Translator.

How to Translate Audio on Windows in Real Time

Often what you need to translate is speech, not text: a meeting, a YouTube video, a voice chat. With StreamVox it takes four steps:

1. Install StreamVox from the Microsoft Store and sign in.
2. Pick the sound to translate in the Sound: menu: System Audio for everything your PC plays, or Application for a single app.

3. Set two languages: the one being spoken and the one you want to read.
4. Turn on the overlay. Translated subtitles appear over any window as people speak, and for many languages StreamVox can also read the translation aloud.

The free plan gives you 15 minutes a day, enough to try it on a real call or video before you pay for anything. For meetings in particular, see real-time Zoom and Teams translation.

Our Recommendation

For real-time audio translation on Windows, choose by where the sound comes from. If it can come from any app (a game, a film, a stream, Discord or a call in any meeting app) and you want to read it in any of 69 languages, StreamVox covers that on Windows 10 and 11, with a floating subtitle overlay and no stored recordings. If your meetings happen in Microsoft Teams, Zoom Meetings or Google Meet, DeepL Voice works inside those calls. If you have a Copilot+ PC and read English or Chinese (Simplified), the live captions in Windows 11 are already on your PC.

For text and documents, Google Translate, DeepL and Microsoft Translator each do that job in the ways described above. StreamVox translates what is heard, not documents or typed text, so it works next to a text tool rather than replacing one.

Frequently Asked Questions

What is the best AI translation tool for Windows in 2026?

It depends on what you need to translate. For live audio from any app on a Windows 10 or 11 PC, shown as subtitles in any of 69 languages, StreamVox is built for that job. According to their official pages (checked in October 2026), DeepL Voice translates calls in Microsoft Teams, Zoom Meetings and Google Meet and in-person conversations, and on a Copilot+ PC the live captions in Windows 11 translate audio into English or Chinese (Simplified). For text, documents and websites, look at Google Translate, DeepL and Microsoft Translator.

Is there a free AI translation app for Windows?

Yes. StreamVox gives you 15 free minutes a day, and its paid plans start at $8.99/month (Pro), with Pro+ and Unlimited for more hours. According to their official pages (checked in October 2026), Google Translate is offered free of charge, DeepL has a free version next to its paid plans, and live captions are built into Windows 11, with translation on Copilot+ PCs.

Can these tools translate audio in real time?

Several can, each within its own scope. StreamVox translates the sound of any app on a Windows 10 or 11 PC and shows it as live subtitles in any of 69 languages. According to their official pages (checked in October 2026), DeepL Voice translates Microsoft Teams, Zoom Meetings and Google Meet calls with live subtitles, and in-person conversations on iOS, Android and the web; Windows 11 live captions translate what plays on a Copilot+ PC into English or Chinese (Simplified); Google Translate translates what you say into the microphone, and its phone app also translates someone speaking in near real time; and the Microsoft Translator apps translate what you say, including live conversations that others can join in a web browser.

Which tool supports the most languages?

Each one counts languages for a different task. StreamVox recognizes speech in 61 languages and translates it into any of 69. According to their official pages (checked in October 2026), Google Translate covers more than 200 languages for text, speech and websites and DeepL Translator 100+; DeepL Voice lists live subtitles in 40+ languages and says its captions can be translated into any language available in DeepL Translator; and Windows 11 live captions translate from over 40 languages into English and from 27 into Chinese (Simplified). Microsoft lists the languages of each Translator feature on its languages page.

Do I need an internet connection to use them?

For StreamVox, yes: it translates in the cloud and needs a stable connection. According to their official pages (checked in October 2026), Windows 11 live captions process audio on the device and can show captions without an internet connection, the Google Translate app can download languages to translate without one, and the Microsoft Translator apps can translate text offline with downloaded language packs.