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Failover routing strategies for LLMs keep enterprise AI online during provider outages. Compare patterns, trade-offs, and how Bifrost implements them. TL;DR * LLM provider outages are frequent, not rare: 47 incidents were tracked across major AI systems in December 2025 alone, so failover routing is now a baseline production

TL;DR * Cloudflare AI Gateway is a hosted edge proxy, so it cannot be deployed inside a customer VPC or an air-gapped environment, which rules it out for many regulated workloads. * Bifrost is the strongest enterprise alternative, adding 11 microseconds of overhead per request at 5,000 requests per

TL;DR * LLM costs are driven by token volume rather than provisioned capacity, so they can rise by an order of magnitude in a day with no deployment change. * Bifrost enforces budgets at four independent levels (customer, team, virtual key, provider config), and blocks a request when any applicable budget