Scale team workflows with the DeepL API
Developers and technical teams alike can easily integrate accurate, secure Language AI. Whether it’s real-time voice communication, translation, or writing, the DeepL API can solve your team’s language-centric challenges efficiently and at scale.
Trusted by over 200,000 businesses globally
An API for every language need
With a multifaceted API for both translation and writing improvement, you can take your business communication to the next level.
DeepL API for Translate
Easily integrate DeepL’s translation solution into your company’s systems to translate websites and internal apps quickly—reducing time-to-market and ensuring multilingual accuracy.
DeepL API for Write
Build powerful applications into your team’s platform to rewrite, correct, and improve content—including setting styles and tones to fit your target audience.
DeepL API for Voice
Harness the power of multilingual support with real-time voice-to-voice translation and transcription across voice channels and enterprise products, including embedded voice translation and live interpretation for customer service and sales workflows.
Translate your website and internal tools
DeepL's industry-leading translation technology is powered by in-house LLMs—and is integrated directly into your business’s products and internal platforms. Reach a global, multilingual audience with speed and pinpoint accuracy, at scale.
- Rapidly integrate into existing company systems and apps
- Translate your site and internal apps in over 100 languages
- Ensure consistency and control with advanced customization features like Glossaries and Style rules
- Handle file translation for PDFs, Word documents, HTML and more, all preserving original formatting and design
Perfect your written communication
Enhance your content at scale with our writing companion. With smart suggestions, rewrites, and word alternatives, your team can strike the right cord in customer communications.
- Automatically fix grammar and syntax errors
- Find the right words with sentence rephrases and term alternatives
- Select a style or tone to match your target audience—from business or academic to enthusiastic or diplomatic
Communicate across channels and tools
Enable multilingual customer service and sales with real-time voice-to-voice translation across voice channels and enterprise tools using the Voice API, with embedded speech translation and live interpretation for contact centers and BPO workflows.
- Hire staff based on expertise in customer issues, instead of by language coverage
- Distribute or centralize support more flexibly, so you can manage costs
- Maintain service levels even when fewer specialized language agents are available
- Agents can respond confidently in the moment with live translated audio, on-screen transcription and translation
Developer-friendly implementation
The DeepL API empowers technical teams to customize DeepL’s technology for internal apps including emails, workflows, and e-commerce websites—all while maintaining the highest standards of security and market-leading accuracy.
Supports multiple file types
Bulk translate batches of files into multiple languages simultaneously, preserving original formatting across formats like PDF, Word, PowerPoint, HTML and more.
Delivers consistency at scale
Use DeepL’s advanced Customization hub features as an AI control layer that ensures all translations are consistent, on-brand and right for you.
Advanced data security and compliance
Stay secure and in control with ISO 27001, SOC 2 Type II, HIPAA, and GDPR certifications. Benefit from features like activity reporting, access control, and role-based permissions to prevent unauthorized access and ensure compliance.
Find DeepL on AWS
Scale faster, and connect instantly with your global audience with DeepL via AWS Marketplace.
Next-generation model
Next-generation—our newest language model—is powered by highly specialized, in-house LLM technology built for and uniquely tuned for language.This newest technology raises the bar for teams looking for high-quality translation and content optimization at scale—and is proven to increase accuracy and reduce mistranslations.
Grow your business, minimize costs
Predictable pricing
With straightforward, predictable cost measurement capability, your team can accurately budget and scale with confidence.
Built for developers, by developers
Join our developer community Discord to accelerate learning and access client libraries. Additionally, our API documentation hosts a suite of recourses for you to get the most out of the DeepL API.
Keep business data confidential
The DeepL API runs with the highest compliance and certification standards, and Pro customer data is never used to train DeepL’s models.
Ready to build with the DeepL API?
Design custom workflows that accelerate global growth with DeepL’s Language AI.