DeepL API

Translation

World's most accurate translator — 30+ languages with natural output.

DeepL provides industry-leading machine translation. Translate text, documents, and glossaries across 30+ languages with the most natural-sounding output available.

Details

Auth Type
API Key (DeepL-Auth-Key header)

Rate Limit
500,000 chars/month (free)

Pricing
Free: 500K chars/mo

Step 1: Save your provider key

This is NOT your Callio key. Enter the API key from the provider's dashboard (e.g. OpenAI/SendGrid).

Save Provider Key

API Key (DeepL-Auth-Key header)

Sign up at deepl.com/pro and get your API key.

Getting Started

1

Try It Instantly

Click "Try It" above to test the API in the playground

2

Add to Your Agent

Click "Add to Agent" to get your API key and integrate

Common Use Cases

• Text translation
• Document translation
• Multilingual content
• Localization
• Customer support

💻 Code Examples

Get started quickly with these code examples in your favorite language

cURL

curl -X GET \
  'https://www.callio.dev/api/proxy/deepl/forward?target=https%3A%2F%2Fapi-free.deepl.com%2Fv2%2Fendpoint' \
  -H 'Authorization: Bearer YOUR_CALLIO_KEY' \
  -H 'Content-Type: application/json'

💡 Tip: Replace YOUR_CALLIO_KEY with your actual Callio API key from the dashboard.

Ready to integrate DeepL API?

Test endpoints live or generate your API key and start building in minutes.