DeepL's next-gen LLM: Outperforming ChatGPT-4, Google, and Microsoft for enterprise translation quality

Key Takeaways

• DeepL’s next-generation (next-gen) language model outperforms Google Translate, ChatGPT-4, and Microsoft in blind expert tests for enterprise translation quality.
• The specialized LLM architecture delivers more accurate, context-aware translations with fewer edits, reducing copyediting time and boosting productivity.
• Built on years of proprietary translation data, the model avoids the limitations of general-purpose AI and lowers the risk of hallucinations and misinformation.
• Starting with Japanese, German, and Simplified Chinese to and from English, the next-gen model now supports 100+ languages, with more to come.
• Enterprise-grade security, privacy, and compliance standards make the model a trusted foundation for scaling Language AI across global teams.

We’re excited to introduce our next-generation language model to DeepL Translator. At DeepL, it’s part of our mission to provide the highest-quality translations to businesses around the world.

Powered by specialized Language AI alongside bespoke translation and writing technology, our new language model takes translation excellence to the next level. It requires fewer edits and improves knowledge worker productivity.

That means Translator helps your enterprise save more time and money translating by further streamlining global communication.

Give it a try: Switch to the next-gen model in the product selector, and experience more precise translation.

Let’s learn more about our latest language model.

Visit DeepL AI Labs to explore the research behind our LLM technology.

What can you expect from DeepL's next-gen model?

DeepL’s next-generation model marks a major step forward in Language AI—there’s lots to be excited about. 

We built it on a specialized LLM architecture and years of proprietary translation data. And that makes it go beyond general-purpose AI to deliver higher-quality, more context-aware business translations.

Here are four ways the next-gen model moves the needle for your enterprise.

1. Specialized architecture that outperforms general-purpose models

DeepL’s models are trained on the highest-quality linguistic data, with an unwavering focus on excellence. 

We combine world-class AI with the expertise of thousands of hand-picked language specialists who “tutor” the model. That’s why DeepL consistently provides best-in-class translation.

In fact, recent blind tests show language experts routinely prefer DeepL's translations. 

According to the data, those experts preferred DeepL’s translations at significantly higher rates than competing tools:

• 1.3x more often than Google Translate
• 1.7x more often than ChatGPT-4
• 2.3x more often than Microsoft

But that’s not all. 

Thanks to specialized LLMs, which are uniquely tuned for language, DeepL’s more human-like translations also have a reduced risk of hallucinations and misinformation. This is especially important for enterprises looking to scale operations with a trusted AI solution.

Unlike general-purpose models that train with data pulled from the public internet, DeepL’s model leverages over seven years of proprietary data. That data is specifically tuned for translation and content creation.

2. Superior precision across 100+ global languages

This step forward began with Japanese, German, and Simplified Chinese to and from English. Many more languages have followed (more than 100 as of 2026) as DeepL continues to improve the top-quality translations in its web translator.

With the next-gen model’s innovations, DeepL Translator provides the highest-quality translations on the market.

The previously noted blind tests with leading language experts confirmed the quality of our next-gen models. In these tests, experts determined the quality of the LLM-powered translations compared to the “classic” model.

The new model came out on top for each test:

• Japanese ←→ English: The quality of the next-gen model is 1.7x better than the classic model.
• Simplified Chinese ←→ English: The quality of the next-gen model is 1.7x better than the classic model.
• German ←→ English: The quality of the next-gen model is 1.4x better than the classic model.

This improved translation quality saves your company time and allows your teams to streamline communications across global markets.

3. Improved productivity that saves more time and money

Our next-generation model helps your enterprise get even more value from DeepL. 

Blind tests also found that DeepL’s translations require fewer edits than competitors. Google Translate needed 2x more edits and ChatGPT-4 needed 3x more edits to achieve the same quality.

That means our latest LLMs improve knowledge worker productivity by decreasing the time spent on translation and copyediting. Instead, your teams can focus on the jobs that matter most.

In a 2024 study by Forrester Consulting, The Total Economic Impact™ of DeepL, researchers discovered DeepL reduced translation time by 90% and cut translation workloads by 50%. 

The result was a 345% ROI. 

Note: DeepL’s Forrester study was conducted in 2024 using a composite organization, which tested the “classic” model.

4. No-compromise security and privacy

Just like before, we built our next-gen model with security at its core. That’s thanks to these crucial factors:

• The highest level of certification and compliance standards: ISO 27001, GDPR, and SOC 2 Type II reporting.
• Data sovereignty: A steadfast commitment to never using Pro customer data to train our AI models.
• Enterprise control: Centralized administration that allows for secure, SSO-enabled scaling across global teams.

Our next-gen technology is rooted in privacy-first architecture: a secure foundation your enterprise can trust as Language AI becomes central to how you work.

Elevate your enterprise communication with higher-quality translations

Our next-gen model represents another significant stride in providing your enterprise with increasingly powerful features. With this increase in translation quality, which improves upon our “classic” model and outperforms competitors, we’re raising the bar for AI translation tools everywhere.

How can you start making use of our next-gen model? It’s easy: Pro users can switch between the next-gen LLM and “classic” model with the click of a button.

Try out the next-gen model with your Pro plan, or consider upgrading to DeepL Pro.

DeepL’s Language AI suite—Translator, Write, Voice, API, and Integrations—gives your enterprise the tools to communicate with precision, efficiency, and confidence.

Contact Sales to explore how our specialized Language AI tools can work for your teams.