You can follow their documentation here: https://api-docs.deepseek.com/

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Gateway Integration

1

Create a Helicone account

Log into helicone or create an account. Once you have an account, you can generate an API key.
2

Create a DeepSeek AI account

Log into platform.deepseek.ai or create an account. Once you have an account, you can generate an API key from your dashboard.
3

Set HELICONE_API_KEY and DEEPSEEK_API_KEY as environment variable

HELICONE_API_KEY=<your API key>
DEEPSEEK_API_KEY=<your API key>
4

Modify the base URL and add Auth headers

Replace the following DeepSeek AI URL with the Helicone Gateway URL:https://api.deepseek.ai/v1/chat/completions -> https://deepseek.helicone.ai/v1/chat/completionsand then add the following authentication headers:
Authorization: Bearer <your API key>
Now you can access all the models on DeepSeek AI with a simple fetch call:

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Example

curl --request POST \
      --url https://deepseek.helicone.ai/chat/completions \
      --header 'Content-Type: application/json' \
      --header "Authorization: Bearer $DEEPSEEK_API_KEY" \
      --header "Helicone-Auth: Bearer $HELICONE_API_KEY" \
      --data '{
          "model": "deepseek-chat",
          "messages": [
              {
                  "role": "system",
                  "content": "Say Hello!"
              }
          ],
          "temperature": 1,
          "max_tokens": 30
        }'
For more information on how to use headers, see Helicone Headers docs. And for more information on how to use DeepSeek AI, see DeepSeek AI Docs.