LLM gateway comparison: self-hosted and managed AI API gateways compared on protocol compatibility, billing units, timeout and retry semantics, idempotency, quotas and observability.
⚡ Awesome AI Gateway — pick an AI gateway from 240+ (LiteLLM, OpenRouter, Portkey, Kong, Higress, new-api, Bifrost) by cost, security & compliance, see what consolidated in 2026, learn how they actually work from an 8-chapter handbook, and verify every number yourself. Reproducible benchmarks, bilingual; stars & releases refreshed daily.