Build a Three-Tier AI Failover That Survives Provider Outages

Three outages across two providers in 34 days exposed how fragile single-vendor AI stacks really are. When Claude went down on April 6th and 7th, and OpenAI had elevated errors in March, nomad founders running client delivery had dead air - no fallback, no queue, just silence while clients waited for deliverables nine time zones away. This episode breaks down a three-tier failover system you can ship in a weekend: Hot (same provider, different model), Warm (different provider entirely), and Cold (graceful degradation with human-in-the-loop). Plus budget guardrails tied to Google's new Gemini spend caps so your API bill doesn't bankrupt you while the failover does its job. Santi walks through the actual architecture - circuit breakers, jittered retries, Redis queues, and idempotency keys - while Kira pressure-tests the human edge cases and client communication templates you need before the next outage hits.