Best Free AI Translators 2026: 6 Options Compared

Free machine translation divides into hosted apps with a monthly character cap and tools you can run yourself with no cap at all. DeepL's free version allows 50,000 characters per user a month and one file translation of up to 5 MB, which is plenty for emails and short documents but not a book. Its paid Individual plan is EUR 7.49 a month billed annually and raises the allowance to 300,000 characters. LibreTranslate is AGPL-3.0 and entirely self-hosted, and it can run offline, so you control your data and have no cap beyond your hardware. Argos Translate is an offline Python library under MIT and CC0 that LibreTranslate builds on, with language packs installed locally. The chat assistants ChatGPT, Gemini and Le Chat also translate on their free plans, with the advantage that you can ask for a tone, such as formal or casual. Choose a hosted tool for quality on the common language pairs, and a self-hosted one when the text is confidential or you need volume. The trade-off is language coverage and polish: offline models are good for major pairs and weaker on rarer ones, so test with your own sample.

DeepL

Free version: 50,000 characters per user a month and 1 file translation up to 5 MB. Individual is EUR 7.49 a month billed annually for 300,000 characters. Strong on European languages.

Price: Free (Free version: 50,000 characters per user per month and 1 file translation per month up to 5 MB); paid from EUR 7.49 per month, Individual plan billed annually (price shown for Germany, VAT included) (DeepL pricing, checked 2026-10-23).

Platforms and license: Web, Windows, macOS, iOS, Android. Proprietary SaaS.

Best for: Emails and documents in common language pairs.

LibreTranslate

AGPL-3.0 and entirely self-hosted, able to run offline with Docker or pip. Free of any character cap, but you maintain the server; hosted API pricing was not on the page.

Price: Free (Free to self-host; the project says it is entirely self-hosted and can run offline) (LibreTranslate pricing, checked 2026-10-23).

Platforms and license: Self-hosted (Docker, pip), Web. AGPL-3.0 (open source).

Project activity: 17.2k GitHub stars · latest release v1.9.6 (May 26, 2026) · last commit Oct 26, 2026

Best for: Teams that need translation inside their own network.

Argos Translate

Offline Python library, dual licensed MIT or CC0, with CLI and desktop GUI. You install language packages locally and it can pivot through English between two other languages.

Price: Free (Free open-source offline translation library; you install language packs locally) (Argos Translate pricing, checked 2026-10-23).

Platforms and license: Python library, Command line, Desktop GUI. MIT or CC0 (dual licensed) (open source).

Project activity: 6.6k GitHub stars · latest release v1.4.0 (Aug 24, 2021) · last commit Aug 8, 2026

Best for: Developers embedding translation in an app.

ChatGPT

Free plan at $0 a month translates pasted text and lets you ask for tone and context. Usage limits apply; Plus is $20 a month.

Price: Free (Free plan at $0/month); paid from $8 per month (Go; Plus $20/month; availability varies by region) (ChatGPT pricing, checked 2026-10-25).

Platforms and license: Web, iOS, Android, macOS, Windows. Proprietary.

Best for: Translations where tone and nuance matter.

Worth knowing: Go is listed at $8/month and Plus at $20/month. Pro tiers are $100, $200 and $500/month. Plan availability and usage vary.

Compare: ChatGPT alternatives

Gemini app

Free with a Google account and handy inside Android and Google apps. Google AI Plus is $4.99 a month for higher use.

Price: Free (Free with a Google account); paid from $4.99 per month (Google AI Plus) (Gemini app pricing, checked 2026-10-22).

Platforms and license: Web, iOS, Android. Proprietary.

Best for: Quick translations for Google account users.

Worth knowing: Google AI Pro is $19.99/month; Ultra starts at $99.99/month.

Le Chat

Mistral's assistant has a free plan that handles translation requests with chat follow-ups. Pro is $14.99 a month.

Price: Free (Free plan); paid from $14.99 per month (Pro) (Le Chat pricing, checked 2026-10-22).

Platforms and license: Web, iOS, Android. Proprietary.

Best for: Users who prefer a European provider.

Which one to pick

• You translate confidential documents and can host a server: LibreTranslate
• You want the best result for European languages: DeepL
• You need translation inside your own app: Argos Translate
• You want to specify formal or casual tone: ChatGPT