From 9f157158770c27b08b3e15d7a9a6dd421a0ba025 Mon Sep 17 00:00:00 2001
From: Frank <frank@anoma.ly>
Date: Thu, 28 May 2026 18:38:07 -0400
Subject: [PATCH] zen: sync

---
 .../app/src/routes/zen/util/handler.ts        | 47 ++++++++++++-------
 .../src/routes/zen/util/modelTpsLimiter.ts    |  9 +---
 2 files changed, 32 insertions(+), 24 deletions(-)

diff --git a/packages/console/app/src/routes/zen/util/handler.ts b/packages/console/app/src/routes/zen/util/handler.ts
index 6ddc967097..ed76c16c1a 100644
--- a/packages/console/app/src/routes/zen/util/handler.ts
+++ b/packages/console/app/src/routes/zen/util/handler.ts
@@ -478,29 +478,24 @@ export async function handler(
     stickyId: string,
     trialProviders: string[] | undefined,
     retry: RetryOptions,
-    stickyProvider: string | undefined,
+    stickyProviderId: string | undefined,
     modelTpmLimits: Record<string, number> | undefined,
-    modelTpsLimits: Record<string, boolean> | undefined,
+    modelTpsLimits: Record<string, { qualify: number; unqualify: number }> | undefined,
   ) {
     const modelProvider = (() => {
-      const allProviders = modelInfo.providers.filter((provider) => !provider.disabled)
-
       // Byok is top priority b/c if user set their own API key, we should use it
       // instead of using the sticky provider for the same session
       if (authInfo?.provider?.credentials) {
-        return allProviders.find((provider) => provider.id === modelInfo.byokProvider)
-      }
-
-      // Always use the same provider for the same session
-      if (stickyProvider) {
-        const provider = allProviders.find((provider) => provider.id === stickyProvider)
-        if (provider) return provider
+        return modelInfo.providers.find((provider) => provider.id === modelInfo.byokProvider)
       }
 
+      // Prioritize trial providers
+      let allProviders = modelInfo.providers.filter((provider) => !provider.disabled)
       if (trialProviders) {
-        const trialProvider = trialProviders[Math.floor(Math.random() * trialProviders.length)]
-        const provider = allProviders.find((provider) => provider.id === trialProvider)
-        if (provider) return provider
+        allProviders = allProviders.map((provider) => ({
+          ...provider,
+          priority: trialProviders.includes(provider.id) ? 0 : provider.priority,
+        }))
       }
 
       if (retry.retryCount !== MAX_FAILOVER_RETRIES) {
@@ -515,7 +510,11 @@ export async function handler(
           })
           .filter((provider) => {
             if (!provider.tpsGoal) return true
-            const isLowTps = modelTpsLimits?.[`${provider.id}/${provider.model}/${provider.tpsGoal}`] ?? false
+            const tps = modelTpsLimits?.[`${provider.id}/${provider.model}/${provider.tpsGoal}`] ?? {
+              qualify: 0,
+              unqualify: 0,
+            }
+            const isLowTps = tps.qualify + tps.unqualify > 10 && tps.qualify < tps.unqualify
             return !isLowTps
           })
           .map((provider) => {
@@ -533,7 +532,23 @@ export async function handler(
         }
         const index = (h >>> 0) % providers.length // make unsigned + range 0..length-1
         const provider = providers[index || 0]
-        if (provider) return provider
+
+        // sticky provider does not exist => use selected provider
+        if (!stickyProviderId) return provider
+        const stickProvider = allProviders.find((provider) => provider.id === stickyProviderId)
+        if (!stickProvider) return provider
+
+        // stick provider exists + selected provider is API type => use sticky provider
+        if (!provider.tpsGoal) return stickProvider
+
+        // stick provier exists + selected provider is GPU type + GPU not idle => use selected provider
+        const tps = modelTpsLimits?.[`${provider.id}/${provider.model}/${provider.tpsGoal}`] ?? {
+          qualify: 0,
+          unqualify: 0,
+        }
+        if (tps.qualify <= tps.unqualify * 3) return stickProvider
+
+        return provider
       }
 
       // fallback provider
diff --git a/packages/console/app/src/routes/zen/util/modelTpsLimiter.ts b/packages/console/app/src/routes/zen/util/modelTpsLimiter.ts
index 477d08ce68..3ff63f7d49 100644
--- a/packages/console/app/src/routes/zen/util/modelTpsLimiter.ts
+++ b/packages/console/app/src/routes/zen/util/modelTpsLimiter.ts
@@ -37,7 +37,7 @@ export function createModelTpsLimiter(providers: { id: string; model: string; tp
       )
 
       // convert to map of model to summed count across current and previous intervals
-      const result = data.reduce(
+      return data.reduce(
         (acc, curr) => {
           const existing = acc[curr.id] ?? { qualify: 0, unqualify: 0 }
           acc[curr.id] = {
@@ -48,13 +48,6 @@ export function createModelTpsLimiter(providers: { id: string; model: string; tp
         },
         {} as Record<string, { qualify: number; unqualify: number }>,
       )
-
-      return Object.fromEntries(
-        Object.entries(result).map(([id, { qualify, unqualify }]) => {
-          const isLowTps = qualify + unqualify > 10 && qualify < unqualify
-          return [id, isLowTps]
-        }),
-      )
     },
     track: async (
       provider: string,