DeepL vs Smartling

DeepL is a machine translation service from DeepL, a company based in Cologne, Germany, that grew out of the Linguee online dictionary and launched its translator in 2017. It is known for output that reads more naturally and keeps nuance better than many competitors, especially for European languages, and it supports Turkish among its 30+ languages.

Users translate text in the browser, desktop and mobile apps, or whole documents such as Word, PowerPoint and PDF files while keeping their formatting. Glossaries enforce company terminology, formality settings switch between formal and informal tone in languages that distinguish them, and DeepL Write rephrases and corrects text to improve grammar and style. DeepL Voice brings real-time speech translation to conversations and meetings. Businesses integrate the DeepL API into websites, apps, CMSs and support tools, and many localization platforms such as Crowdin, Lokalise and Weglot use DeepL as a translation engine. A free tier has character and document limits, while the per-user Individual, Team and Business plans raise character and file limits and add CAT tool integration and data security guarantees.

DeepL fits professionals, translators and companies that need high-quality drafts quickly, particularly in Europe where its German base and data handling help with compliance. Its language coverage remains narrower than Google Translate, which is better for rare languages and free large-scale use. Large language models are now a serious alternative for context-aware translation.

Smartling is an enterprise translation management platform founded in 2009 and based in New York. It combines translation software, AI and machine translation, and managed language services from professional linguists, so large companies can localize websites, apps, documents, marketing and support content through one vendor.

Content flows in through connectors for CMSs, code repositories, marketing tools and support platforms, or through the Global Delivery Network, a proxy that translates websites without code changes. Translators work in a CAT tool with visual context that shows strings as they appear on the page, translation memory, glossaries and automated quality checks. AI translation with human review options, workflow automation and cost and quality reporting help teams decide which content needs full human translation and which can be machine-translated. A free Core plan covers the basics, Enterprise is custom priced, and translation is billed per word.

Smartling fits enterprises with high-volume, multi-language content and a need for one accountable partner. Enterprise contracts are expensive, and the platform is more complex than small teams need. Lokalise and Crowdin are better for product teams that localize app strings continuously, Phrase covers both software and document workflows, and Weglot is far simpler for translating a single website. Teams already working with a language services provider may prefer a tool-only option such as XTM or Trados.