Portkey centralizes model access, fallbacks, caching, guardrails, keys, budgets, and traces, but a gateway becomes a critical data and availability boundary that needs failure testing.
Direct verdict
Portkey earns a shortlist for teams needing shared model governance and able to engineer the gateway as critical infrastructure. Start with shadow traffic, restrict keys, define fail-open policy, validate cache isolation, and keep a recovery path.
What to verify
Replay 500 synthetic requests across two providers with outages, limits, slow responses, malformed outputs, injection, PII, changed prices, cache collisions, budget exhaustion, and key revocation. Measure success, fallback drift, cost, latency, guardrail errors, exposure, isolation, and gateway outage behavior.