openrouter adds more control over how you manage provider keys

if you're routing ai traffic through openrouter, you just got a meaningful upgrade to how you handle provider keys

three things dropped:

• multiple keys per provider. stack several keys for the same provider, set the order they're tried, and let openrouter cascade through them automatically when one fails or hits a rate limit. good for separating dev and prod, rotating across accounts, or spreading load across a team

• key filters. lock a key to a specific model, a specific user, or a specific part of your app. useful for keeping evals away from production, sandboxing a teammate's access, or routing premium traffic through a dedicated account

• priority vs fallback tiers. choose whether a key runs before openrouter's shared endpoints or only after. flip on "always use for this provider" and openrouter will never touch shared capacity for that provider — your key or nothing

nothing groundbreaking, but it's the kind of operational control that actually matters once you're past the prototype stage and running something real