# Model subscriptions

Can you use the AI plan you already pay for? It depends on the plan: some support a Rakazo
connection, while others cover only the provider's own apps. Subscription allowances and API
billing are often separate.

## ChatGPT

**Yes, through ChatGPT sign-in.** Open **Settings → Models**, find **OpenAI Codex**, and choose
**Sign in with ChatGPT**. You need an eligible plan with available Codex usage. Available models
can differ from those in the ChatGPT app.

Connecting an **OpenAI API key** instead uses separate API billing, not your subscription allowance.
See the [official OpenAI authentication documentation](https://learn.chatgpt.com/docs/auth#openai-authentication).

## Claude

**Use an Anthropic API key for Rakazo's bot models.** Claude Pro and Max subscriptions do not
include API credit. Although Rakazo currently exposes a Claude sign-in option, Anthropic's
published rules prohibit third-party apps from offering Claude account login or routing their own
requests through consumer subscription credentials. We do not recommend that path.

Using your subscription in the unmodified Claude Code app is a separate case. It does not authorize
Rakazo's model connection. See Anthropic's [authentication and credential rules](https://code.claude.com/docs/en/legal-and-compliance#authentication-and-credential-use).

## OpenCode

**Yes, for coding-agent workloads, through an OpenCode Go API key.** In **Settings → Models**, find **OpenCode Go**
under **Add provider**, choose **Connect API key**, and paste your OpenCode key.

Go is intended for coding-agent traffic, including compatible third-party coding agents. Check
[OpenCode's usage rules and limits](https://opencode.ai/docs/console/go/) before using it for your
bot's workflow.

**OpenCode Zen / pay-as-you-go** uses the **OpenCode** provider instead. Connect its API key;
usage comes from your OpenCode credit balance rather than Go's allowance. Its free-tier chat
models require the OpenCode app and are not offered in Rakazo. See [OpenCode's model documentation](https://opencode.ai/docs/console/models/).

## Other subscriptions

Check the exact plan before connecting or buying it:

- **Gemini:** API keys use the Gemini API's own [billing tiers and limits](https://ai.google.dev/gemini-api/docs/billing).
  Do not assume a Google AI app subscription funds API requests.
- **Kimi:** Code membership and Moonshot's general API have different keys, endpoints, and billing.
  Check the [Kimi account documentation](https://www.kimi.ai/help/kimi-code/faq) for your plan.
- **Copilot, Grok, and other coding plans:** check the provider's current terms, eligible clients,
  and included models. A sign-in option alone does not establish permission for every Rakazo workload.

You need both a connection Rakazo supports and permission from the provider for your intended use.
For compatible APIs, see [Models](/docs/models/) for custom server connections.

## Billing and limits

Your provider's allowance, charges, and rate limits apply when you connect your own account.
This does not add Rakazo model credits or change your Rakazo hosting plan.

A [fallback model](/docs/models/#main-model-and-fallbacks) can use a separately billed connection
when your subscription reaches a limit. See [Account and billing](/docs/account/).