You can follow their documentation here: https://docs.perplexity.ai/

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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 Perplexity AI account

Log into Perplexity 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 PERPLEXITY_API_KEY as environment variable

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

Modify the base URL and add Auth headers

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

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Example

curl --request POST \
  --url https://perplexity.helicone.ai/chat/completions \
  --header "Authorization: Bearer $PERPLEXITY_API_KEY" \
  --header "Helicone-Auth: Bearer $HELICONE_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
    "model": "sonar-pro",
    "messages": [{"role": "user", "content": "Say this is a test"}]
}'
For more information on how to use headers, see Helicone Headers docs. And for more information on how to use Perplexity AI, see Perplexity AI Docs.