These tools act as automated safety nets by routing requests to secondary endpoints whenever a primary model encounters rate limits, downtime, or sudden latency spikes. By managing programmatic retries and cross-provider failovers, they eliminate single points of failure and keep production workflows running uninterrupted. When evaluating options, look for minimal routing overhead, flexible trigger conditions, and granular observability into provider health and error logs.

One API that picks the right AI model for every prompt