G2

Onur O.

Industrial designer

Small-Business (50 or fewer emp.)

4/15/2026

"High-Quality, Developer-Friendly Translation API with Powerful Customization"

4.5/5

What do you like best about DeepL API?

As a product designer, I recently needed to localize a complex app interface into German. The AI and intelligence behind DeepL is honestly on another level compared to other translation engines. It doesn’t just translate word for word; it picks up on the natural context and tone, which is crucial for UX/UI copy.

The API performance is lightning fast. We used their integrations to connect the API directly to our localization files, and it processed thousands of text strings in seconds. On top of that, the UI/UX of their developer dashboard is super clean, so it’s very easy to generate API keys and monitor usage. Review collected by and hosted on G2.com.

What do you dislike about DeepL API?

The initial onboarding process for the Pro API tier felt a bit rigid, especially around setting up the billing limits. Also, their customer support is quite slow. If your API key suddenly throws an error, there is no live chat to get immediate help; you have to email the support team and wait for a response, which can block your workflow. Finally, while the initial pricing and ROI is good, if you are continuously translating massive databases, the character limits burn out quickly and it gets expensive fast. Review collected by and hosted on G2.com.

What problems is DeepL API solving and how is that benefiting you?

It completely automates the localization bottleneck. Instead of manually copying and pasting text into web translators or waiting weeks for human translation agencies, we just push our English JSON files through the API. We get perfectly natural-sounding German UI text back almost instantly. It saves our design and dev team a ridiculous amount of time. Review collected by and hosted on G2.com.