Best AI Translation Tool

Bureau Works is a cloud-based translation management system with native machine translation, translation memory, terminology management, automated job assignment, auto quoting, and financial tracking, built to handle localization across dozens of file types and 200-plus languages. It offers webhooks, an API and CLI, and integrations with platforms such as GitHub, Figma, Contentful, Zendesk, and WordPress for pulling and returning translated content automatically.

Headquartered in California, Bureau Works has rebranded its platform as wxrks, with bureauworks.com now redirecting to wxrks.com, though the underlying product and company are unchanged. Pricing is tiered by annual word volume, starting with a free plan for 60,000 words a year and scaling through paid tiers priced per month billed annually, up to custom Enterprise pricing.

Phrase is a cloud localization platform combining translation management, software and multimedia localization, machine translation, and workflow automation. It offers translation memory, terminology management, in-context editing, and native CI/CD and Git integrations with GitHub, GitLab, Bitbucket, and Azure DevOps, alongside Phrase Studio for AI-powered subtitling, dubbing, transcription, and voice generation.

Plans range from a Freelancer tier at $27/month for solo users up to a Team plan at $1,245/month, all billed annually, with Business and Enterprise tiers custom quoted for larger organizations needing more seats, capacity, and integrations like Adobe Experience Manager and Contentful. A 14-day free trial gives access to most Enterprise features.

Papago is Naver's AI-powered translation app and website, built specifically to handle Korean alongside Japanese, Chinese, English, and other Asian and European languages. It offers text, voice, image, handwriting, conversation, and website translation, plus offline text translation for use without an internet connection. Papago is widely regarded as one of the strongest translators for Korean and other East Asian language pairs, often outperforming general purpose translators in that niche.

The core Papago app and web translator are free to use with no subscription required. Naver also offers a separate companion app called Papago Plus with additional document translation and premium features available through an in-app subscription, though Naver has not published detailed public pricing for it outside the app stores.

Unbabel is a Language Operations (LangOps) platform that combines neural machine translation with human editors to help enterprises deliver multilingual customer support and content at scale. Its AI quality estimation gives teams visibility into translation performance, and workflows can be tuned for speed, quality, or cost depending on market or content type. The platform integrates with tools such as Zendesk, Salesforce, Intercom, and Freshdesk, and its proprietary TowerLLM model powers translation across dozens of languages.

Founded in Lisbon, Portugal in 2013, Unbabel was acquired by TransPerfect in August 2025 and now operates as a division within TransPerfect. It continues to serve enterprise customers such as Adidas, Patagonia, and Skyscanner, with pricing available only through custom quotes based on volume and requirements.

Reverso is a free online translation and dictionary service covering English and over a dozen languages including French, Spanish, Italian, German, Russian, Arabic, and Japanese. Its signature Context feature shows real translated example sentences pulled from movies, books, news, and legal documents so users can see how a phrase is actually used, alongside definitions, synonyms, pronunciation, and verb conjugation.

Beyond the free tier, Reverso Premium and Pro subscriptions add unlimited long-text translation, ad-free apps for PC, Mac, iOS, and Android, and document and PDF translation with higher word limits. A corporate plan adds custom volumes, SSO, and API access. Browser extensions also translate selected text and video subtitles on services like Netflix and YouTube.

ModernMT is an adaptive neural machine translation engine built by Translated that learns in real time from human corrections and uses document-level context, drawing on up to 100,000 words of surrounding text, to improve translation accuracy. It integrates with CAT tools such as Matecat, memoQ, and Trados Studio, offers an open source core on GitHub, and provides an API for custom workflows across roughly 200 languages.

ModernMT is being retired: the company states it is evolving into a new product called Lara, with ModernMT set to sunset by the end of 2026. New account registrations on modernmt.com are closed, existing API keys keep working until December 31, 2026, and customers are being migrated to Lara plans. Historical pricing was volume based, ranging from about $8 to $50 per million characters depending on the service tier.

Smartling is a cloud-based Translation Management System that centralizes and automates localization workflows across content types. It offers a visual context editor so translators see exactly how text will appear in the final product, translation memory, glossary management, and an AI Hub providing access to over 20 LLMs and machine translation engines in one place.

The Core plan is free to start, with users paying only per translated word for machine or human translation services. Enterprise is custom quoted for larger teams needing fully customizable workflows, unlimited translation memory, and advanced linguistic quality assurance. Smartling also offers 50+ native integrations and open APIs for CI/CD pipelines.

iTranslate is a translation app offering text, voice, and camera-based translation across more than 100 languages, with dictionaries, phrasebooks, conjugation tools, and a keyboard extension for translating inside other apps. Free features cover basic text and speech-to-text translation, while a Pro subscription unlocks offline translation in 41 languages, voice conversation mode, website translation, and camera translation of signs, menus, and objects.

Originally built by Austria-based Sonicomobile, iTranslate is now part of Bending Spoons, an Italian software company that has acquired a portfolio of consumer apps. iTranslate Pro is sold as an in-app subscription, with weekly, monthly, and annual options; annual pricing has been listed at $99.99 per year on the App Store.

Lokalise is a localization platform for managing string-based translations across software, web, and mobile products. It offers AI Translations with dynamic LLM routing, AI-based quality scoring using the MQM standard, in-context screenshots for translators, and over 60 integrations including Figma, GitHub, Contentful, and Webflow. Developer tools include a full API, CLI, and mobile SDKs.

Lokalise restructured its pricing in November 2025, removing its free plan in favor of a 14-day free trial. Paid plans now run from Explorer at $144/month up to Advanced at $999/month, with Enterprise custom quoted, all offering unlimited hosted words and translator seats. The platform holds SOC 2 Type II, ISO 27001, and ISO 27017 security certifications.

Lengoo was a Berlin-based AI translation company that offered custom-trained neural machine translation models for enterprise customers, combining automated translation with a human-in-the-loop review process across more than 400 language pairs. Its platform included APIs and applications designed to integrate translation into existing enterprise software, and it held ISO 27001, 9001, 17001, and 18587 certifications.

Lengoo filed for insolvency in Germany in March 2024 after raising roughly 34 million dollars in venture funding, and insolvency proceedings began in May 2024. The company's website now displays a notice that Lengoo is permanently closed, and some of its software assets were acquired by Aleph Alpha in May 2024. No current pricing or live service is available.