GPTZZZ - Multi-model AI API gateway with pay-as-you-go billing

GPTZZZ overview

GPTZZZ is an independent third-party AI API gateway for developers. It offers OpenAI-compatible endpoints and a Claude Messages endpoint, with one account, a shared prepaid balance and usage-based billing. It is not affiliated with OpenAI, Anthropic or other model vendors.

Developers can configure compatible clients with the GPTZZZ base URL and create API keys for the model groups they need. Each API key belongs to one group; the account balance is shared across groups. The public pricing page lists models, billing groups and usage prices, while the console is the reference for current availability and charges.

GPTZZZ publishes Chinese documentation, integration guides, API error references and a public service-status page. It is aimed at developers connecting AI models to applications and coding workflows, rather than purchasing ChatGPT memberships.

Billing is prepaid and pay-as-you-go. The published rules allow Alipay top-ups of CNY 10–2,000 per transaction with no top-up fee, and applications for refunds of unused balance. Top-up amounts are deposits, not fixed monthly subscription prices.