ZenMux

ZenMux is a gateway that sits between an application and multiple large language model providers. It exposes one unified API, routes each request to a suitable model based on cost, speed, or capability, and fails over automatically when a provider has problems.

Its distinguishing feature is an automatic compensation mechanism: when the gateway causes a failed or degraded request, it credits the customer without a support ticket, which it presents as an industry first.

It is aimed at engineering teams running LLM features in production who want provider redundancy, predictable spend, and a single integration point rather than wiring to each vendor directly.