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How to chat with a ChatGPT or Grok plan you already pay for with Oriveo

Sign in with a ChatGPT or Grok subscription instead of an API key, using the provider's device flow.

Credentials. This signs your subscription account into a local client, so treat the session as account access and sign out on any machine you do not control.

Who it is forA user who already pays for a ChatGPT or Grok subscription and wants to use it in Oriveo without buying separate API credits.

The problemPaying for an API key separately duplicates a subscription you already hold.

The outcomeA chat session answered through your existing subscription, with the sign-in completed on the provider's own device-authorization page.

What you need first

  • Node 22.22.2 or a later 22.x for the web client (Node 23+ is not supported)
  • At least one provider API key you created yourself, or a local model server such as Ollama, LM Studio, llama.cpp or vLLM
  • For iOS: a Mac with Xcode 26 and an iPhone on iOS 18 or later, plus a free Apple Developer account
  • For Android: JDK 21 and the Android SDK
  • For subscription sign-in: a ChatGPT or Grok subscription you already hold

Steps

  1. Complete the web quickstart with cd web, npm install, and npm run dev:app.
  2. Open the OpenAI or Grok provider settings in the app.
  3. Choose subscription sign-in instead of an API key.
  4. Follow the provider's device-authorization steps and approve the request.
  5. Send a test message and confirm the reply comes from the subscription model.

Prompt for your agent

In the oriveo/oriveo repository, run the web client with npm run dev:app and start subscription sign-in for <provider-name>. Expected output: a device code and verification step from the provider. Verify that the chat completes after approval and that no API key was entered.

Caveat. The README says subscription sign-in is available for OpenAI with a ChatGPT plan and for Grok only, and it does not say which subscription tiers qualify.

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