Helicone

Helicone is an AI gateway that routes requests to models from OpenAI, Anthropic, Google, Meta, Mistral, and other providers through a single OpenAI-compatible endpoint, with built-in request logging and usage analytics.

Get an API key

Create an account at helicone.ai and generate a key from Settings → API Keys. Add it to your .env file:

HELICONE_KEY=your-api-key

Make sure your account has credits, otherwise model requests will fail.

Configuration

Add the endpoint under endpoints.custom in your librechat.yaml:

    - name: "Helicone"
      apiKey: "${HELICONE_KEY}"
      baseURL: "https://ai-gateway.helicone.ai"
      headers:
        x-librechat-body-parentmessageid: "{{LIBRECHAT_BODY_PARENTMESSAGEID}}"
      models:
        default: ["gpt-4o-mini", "claude-4.5-sonnet", "llama-3.1-8b-instruct", "gemini-2.5-flash-lite"]
        fetch: true
      titleConvo: true
      titleModel: "gpt-4o-mini"
      modelDisplayLabel: "Helicone"
      iconURL: "https://marketing-assets-helicone.s3.us-west-2.amazonaws.com/helicone.png"

Notes

• With fetch: true, LibreChat loads the full model list from Helicone, so the default array is only the initial selection. Browse everything available in the Helicone model library.
• The x-librechat-body-parentmessageid header passes each request's parent message ID to Helicone so logs can be grouped by conversation.
• Set rate limits, caching policies, and review usage from the Helicone dashboard.