OpenAI-compatible gateway
OpenAI-compatible API gateway for prepaid AI usage
An OpenAI-compatible API gateway lets developer tools keep familiar request formats while adding the controls missing from a shared direct provider key: prepaid balance, per-key budgets, model policy, output caps, and request-level logs.
What compatibility means
Compatibility means the client can use a familiar base URL, API key, and request shape. It does not mean the gateway is owned, endorsed, or operated by OpenAI.
Why developers add a gateway
Teams add a gateway when they need one control layer across coding agents, SaaS apps, internal tools, staging keys, and production traffic.
- Keep provider keys private behind the gateway
- Create separate keys for each client or workflow
- Stop requests before wallet balance or key budget is exceeded
- Audit each completed request by model, token meters, status, and billed amount
How to test before paying
Create an account, verify email, use trial credits, create one scoped key, run a small request, then inspect the usage log before adding paid wallet credits.
FAQ
Is an OpenAI-compatible API gateway the same as OpenAI?
No. OpenAI-compatible describes the API shape. NexRelay is an independent third-party gateway.
Who should use an OpenAI-compatible gateway?
Developers and small teams that need spend limits, request logs, and separate controlled keys for tools or apps.