Gateway Reliability Under Fire: How Bifrost Wins the Failover Test

Production failover testing reveals what benchmarks usually hide: the real cost of provider fallbacks. Bifrost wins on latency overhead (11ms p99) through synchronous fallback evaluation, but teams must weigh this against other features like LiteLLM's superior cost-tracking. The lesson is clear: measure AI gateways under failure, not just under ideal conditions, because your choice directly impacts reliability at scale.