Piotr Olszewski · updated October 14, 2026The best AI translation tool depends on what you are translating. For everyday text, documents and voice, DeepL is the most complete option, though its free access is a 30-day trial of paid plans. To read a web page, PDF or video in another language with the original still visible, Immersive Translate has a free plan. For quick free text translation and dictionary help, Reverso is the simplest start. The other tools cover video dubbing and regulated documents.
Quick picks
- Best overall: DeepL, for text, files, voice and API use
- Best free: Immersive Translate, with a free plan for web pages, PDFs and subtitles
- Cheapest: Reverso, with free core translator and dictionary tools and Premium from 3.24 EUR per month on the annual plan
Comparison
| Tool | Price from | Free plan | Best for |
|---|---|---|---|
| [[deepl | DeepL]] | 7.49 EUR/mo (Individual) | Trial (30 days on paid plans) |
| [[immersive-translate | Immersive Translate]] | 0 USD (Free); Pro 9.99 USD/mo | Yes |
| [[reverso | Reverso]] | 3.24 EUR/mo (Premium Annual) | Yes |
| [[rask-ai | Rask AI]] | 39 USD/mo (Creator) | Trial (3 minutes) |
| [[x-doc-ai | X-doc AI]] | Not listed | 7-day trial |
| [[smartcat | Smartcat]] | 1200 USD/year (Adapt) | Trial |
DeepL
DeepL is an AI-first translation platform with text, document, voice and API products. You can use the web translator, drop in files of major formats and get them translated into 100+ languages with layout preserved, or run real-time voice translation. Developers can call the API, and DeepL is also available inside ChatGPT, Claude, Microsoft Copilot, Word, Google Workspace and Microsoft 365. Paid plans add glossaries, shared style rules, team administration and single sign-on.
The page says more than 200,000 businesses use it and that paid plans do not train on your data.
Who it's for: Individuals who translate regularly, teams that need shared glossaries, and developers building multilingual features.
Price: Individual is 7.49 EUR per month (300,000 characters and 3 file translations per month). Team is 24.99 EUR per user per month, and Business is 49.99 EUR per user per month. All are billed annually, according to the pricing page.
Cons: - Character and file limits apply on lower-tier plans - Free use is a 30-day trial of paid plans, not a permanent free tier
Immersive Translate
Immersive Translate is a bilingual translator available as a browser extension (Chrome, Edge, Firefox, Safari), a mobile app and a web service. It shows the original text and the translation side by side. It can translate web pages, PDFs with layout kept (including OCR for scanned files), EPUB e-books, Google Docs, YouTube and Netflix subtitles, live captions in Zoom, Google Meet and Microsoft Teams, and text in images and comics. It connects to several AI engines, including ChatGPT, DeepL, DeepSeek, Gemini and Claude. The page states that translated content is not stored or used to train AI models.
Who it's for: Students, researchers and creators who read foreign-language material and want the source next to the translation.
Price: Free, with web page, PDF and subtitle translation using the general model and no stated limit. Pro is 9.99 USD per month on annual billing (119.88 USD per year), and Max is 19.99 USD per month on annual billing (239.88 USD per year), according to the pricing page.
Cons: - Some features, such as full PDF Pro translation, require the Pro upgrade
Reverso
Reverso is an online translator covering text in 28 languages, with dictionaries, translation in context, synonyms, verb conjugation and a grammar checker. You can translate whole Word, PDF and PowerPoint files while keeping the layout. It also offers native speaker pronunciation and free apps for Windows, Mac, iOS, Android and browsers. The context examples make it useful for study.
Who it's for: Language learners and anyone who needs a quick, free translation with context examples.
Price: The core translator and dictionary are free. Premium Annual is billed once at 38.94 EUR per year (3.24 EUR per month). Premium Monthly is 4.99 EUR per month under a 50% lifetime offer (list price 9.99 EUR). Students and teachers get 75% off Premium, according to the site.
Cons: - Free text length and document features are limited - Document translation on Premium is capped at 50,000 words per year
Rask AI
Rask AI localizes video and audio. You upload a file, it transcribes the speech, translates it and generates dubbed audio. It can clone the original speaker's voice in 32 languages and match lips to the new speech. It also produces captions and SRT files, and has an in-app editor for the translated script and terminology. It supports 135+ languages and offers an API for automated localization.
Who it's for: Marketers, creators and teams that dub or subtitle video.
Price: The free trial includes 3 minutes, with no credit card required. Creator is 39 USD per month for 25 minutes, and Creator Pro is 99 USD per month for 100 minutes, according to the pricing page.
Cons: - Monthly minute quotas limit usage on lower plans - A banner on the site says plan prices are changing soon
X-doc AI
X-doc AI translates technical, medical, legal, financial and scientific documents into 100+ languages. It accepts Word, Excel, PowerPoint, PDF, XML and plain text, and keeps charts, tables, references and formatting intact. Human typesetting and certified translation are optional, with delivery stated as within 24 hours. The site mentions bulk processing of up to 1 million pages, ISO/IEC 27001 and SOC 2 certifications, and a glossary and change-tracking module for regulatory work.
Who it's for: Enterprises and teams handling long or regulated files, such as clinical trial protocols and product manuals.
Price: A free 7-day trial is offered. Paid pricing is not listed.
Cons: - Enterprise-oriented, with larger plan pricing not published
Smartcat
Smartcat is a platform for creating, translating and adapting content for global markets. It combines a translation management system, a CAT tool, and translators for documents, websites, video, audio, subtitles, Excel and InDesign. It offers AI Coworkers for translation, content creation, review and quality assurance, plus a marketplace of expert translators.
Who it's for: Companies that localize websites, courses and product content across many markets.
Price: Adapt is 1200 USD per year with unlimited users and standard SLA. Accelerate is 24000 USD per year and adds the Reviewer Coworker and marketplace experts. Anticipate is 60000 USD per year and adds API access, SSO and an ROI dashboard, according to the pricing page.
Cons: - Higher tiers are much more expensive than the other tools here - The Enterprise tier requires custom pricing and a demo
How to choose
- Pick DeepL if you translate text, documents or voice and want a tool that also works in Word and Google Workspace.
- Pick Immersive Translate if you read foreign web pages, PDFs or subtitles and want the original visible.
- Pick Reverso if you are learning a language or need quick free translations with examples.
- Pick Rask AI for video dubbing, lip-sync or subtitles.
- Pick X-doc AI or Smartcat for regulated documents or large localization projects.
- Check the limits before you commit, since lower plans cap characters, files or minutes.
FAQ
Which AI is best for translation?
For most people, DeepL is the strongest overall choice, covering text, files and voice in one product. Immersive Translate suits bilingual reading, and Rask AI suits video dubbing.
Is there a free AI translator?
Yes. Reverso's core translator and dictionary are free, and Immersive Translate has a free plan for web pages, PDFs and subtitles. DeepL offers a 30-day trial of its paid plans rather than a permanent free plan.
Can AI translate PDF files and keep the formatting?
Several can. Immersive Translate translates PDFs with layout preserved and OCR for scanned files, though full PDF Pro translation requires the Pro upgrade. X-doc AI keeps charts, tables and references intact, and Reverso keeps layout for PDF documents.
Can AI translate videos into other languages?
Yes. Rask AI dubs videos with voice cloning in 32 languages and lip-sync, covering 135+ languages. Immersive Translate also offers bilingual subtitles for YouTube and Netflix.
How much does AI translation cost?
It ranges from free to enterprise levels. DeepL Individual is 7.49 EUR per month on annual billing, Immersive Translate Pro is 9.99 USD per month on annual billing, and Smartcat's entry plan is 1200 USD per year.
Is my text safe when I use AI translation?
Some vendors make specific claims. Immersive Translate states that translated content is not stored or used to train AI models, and DeepL says paid plans do not train on your data. Check each provider's terms before translating confidential material.
Sources
- DeepL pricing: https://www.deepl.com/en/pro#api (as of 2026-10-14)
- Immersive Translate pricing: https://immersivetranslate.com/en/pricing/ (as of 2026-10-14)
- Reverso pricing: https://documents.reverso.net/Pricing.aspx?origin=5&lang=en (as of 2026-10-14)
- Rask AI pricing: https://www.rask.ai/pricing (as of 2026-10-14)
- Smartcat pricing: https://www.smartcat.com/pricing/ (as of 2026-10-14)