From 6869186fc69983becd55f2a9ec6f9c623037d3fc Mon Sep 17 00:00:00 2001
From: Frank <frank@anoma.ly>
Date: Fri, 8 May 2026 03:52:56 -0400
Subject: [PATCH] zen: update tpm rate limit algo

---
 .../src/routes/zen/util/modelTpmLimiter.ts    | 29 ++++++++++++-------
 1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/packages/console/app/src/routes/zen/util/modelTpmLimiter.ts b/packages/console/app/src/routes/zen/util/modelTpmLimiter.ts
index 8e3e8cc95e..2ccc47589f 100644
--- a/packages/console/app/src/routes/zen/util/modelTpmLimiter.ts
+++ b/packages/console/app/src/routes/zen/util/modelTpmLimiter.ts
@@ -1,4 +1,4 @@
-import { and, Database, eq, inArray, sql } from "@opencode-ai/console-core/drizzle/index.js"
+import { and, Database, inArray, sql } from "@opencode-ai/console-core/drizzle/index.js"
 import { ModelTpmRateLimitTable } from "@opencode-ai/console-core/schema/ip.sql.js"
 import { UsageInfo } from "./provider/provider"
 
@@ -6,12 +6,16 @@ export function createModelTpmLimiter(providers: { id: string; model: string; tp
   const ids = providers.filter((p) => p.tpmLimit).map((p) => `${p.id}/${p.model}`)
   if (ids.length === 0) return
 
-  const yyyyMMddHHmm = parseInt(
-    new Date(Date.now())
-      .toISOString()
-      .replace(/[^0-9]/g, "")
-      .substring(0, 12),
-  )
+  const toInterval = (date: Date) =>
+    parseInt(
+      date
+        .toISOString()
+        .replace(/[^0-9]/g, "")
+        .substring(0, 12),
+    )
+  const now = Date.now()
+  const currInterval = toInterval(new Date(now))
+  const prevInterval = toInterval(new Date(now - 60_000))
 
   return {
     check: async () => {
@@ -19,13 +23,18 @@ export function createModelTpmLimiter(providers: { id: string; model: string; tp
         tx
           .select()
           .from(ModelTpmRateLimitTable)
-          .where(and(inArray(ModelTpmRateLimitTable.id, ids), eq(ModelTpmRateLimitTable.interval, yyyyMMddHHmm))),
+          .where(
+            and(
+              inArray(ModelTpmRateLimitTable.id, ids),
+              inArray(ModelTpmRateLimitTable.interval, [currInterval, prevInterval]),
+            ),
+          ),
       )
 
       // convert to map of model to count
       return data.reduce(
         (acc, curr) => {
-          acc[curr.id] = curr.count
+          acc[curr.id] = Math.max(acc[curr.id] ?? 0, curr.count)
           return acc
         },
         {} as Record<string, number>,
@@ -39,7 +48,7 @@ export function createModelTpmLimiter(providers: { id: string; model: string; tp
       await Database.use((tx) =>
         tx
           .insert(ModelTpmRateLimitTable)
-          .values({ id, interval: yyyyMMddHHmm, count: usage })
+          .values({ id, interval: currInterval, count: usage })
           .onDuplicateKeyUpdate({ set: { count: sql`${ModelTpmRateLimitTable.count} + ${usage}` } }),
       )
     },