diff --git a/src/admin/common.ts b/src/admin/common.ts
index d9b30a6..4f6a0ce 100644
--- a/src/admin/common.ts
+++ b/src/admin/common.ts
@@ -50,12 +50,26 @@ export const UserSchema = z
     promptCount: z.number().optional(),
     tokenCount: z.any().optional(), // never used, but remains for compatibility
     tokenCounts: z
-      .object({ turbo: z.number(), gpt4: z.number(), claude: z.number() })
-      .strict()
+      .object({
+        turbo: z.number().optional(),
+        gpt4: z.number().optional(),
+        "gpt4-32k": z.number().optional().default(0),
+        claude: z.number().optional(),
+      })
+      .refine(zodModelFamilyRefinement, {
+        message: "If provided, tokenCounts must include all model families",
+      })
       .optional(),
     tokenLimits: z
-      .object({ turbo: z.number(), gpt4: z.number(), claude: z.number() })
-      .strict()
+      .object({
+        turbo: z.number().optional(),
+        gpt4: z.number().optional(),
+        "gpt4-32k": z.number().optional().default(0),
+        claude: z.number().optional(),
+      })
+      .refine(zodModelFamilyRefinement, {
+        message: "If provided, tokenLimits must include all model families",
+      })
       .optional(),
     createdAt: z.number().optional(),
     lastUsedAt: z.number().optional(),
@@ -64,6 +78,19 @@ export const UserSchema = z
   })
   .strict();
 
+// gpt4-32k was added after the initial release, so this tries to allow for
+// data imported from older versions of the app which may be missing the
+// new model family.
+// Otherwise, all model families must be present.
+function zodModelFamilyRefinement(data: Record<string, number>) {
+  const keys = Object.keys(data).sort();
+  const validSets = [
+    ["claude", "gpt4", "turbo"],
+    ["claude", "gpt4", "gpt4-32k", "turbo"],
+  ];
+  return validSets.some((set) => keys.join(",") === set.join(","));
+}
+
 export const UserSchemaWithToken = UserSchema.extend({
   token: z.string(),
 }).strict();
diff --git a/src/config.ts b/src/config.ts
index df80865..2b13742 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -129,6 +129,8 @@ type Config = {
     turbo: number;
     /** Token allowance for GPT-4 models. */
     gpt4: number;
+    /** Token allowance for GPT-4 32k models. */
+    "gpt4-32k": number;
     /** Token allowance for Claude models. */
     claude: number;
   };
@@ -197,6 +199,7 @@ export const config: Config = {
   tokenQuota: {
     turbo: getEnvWithDefault("TOKEN_QUOTA_TURBO", 0),
     gpt4: getEnvWithDefault("TOKEN_QUOTA_GPT4", 0),
+    "gpt4-32k": getEnvWithDefault("TOKEN_QUOTA_GPT4_32K", 0),
     claude: getEnvWithDefault("TOKEN_QUOTA_CLAUDE", 0),
   },
   quotaRefreshPeriod: getEnvWithDefault("QUOTA_REFRESH_PERIOD", undefined),
diff --git a/src/proxy/auth/user-store.ts b/src/proxy/auth/user-store.ts
index a3c5e47..0fdde78 100644
--- a/src/proxy/auth/user-store.ts
+++ b/src/proxy/auth/user-store.ts
@@ -11,12 +11,13 @@ import admin from "firebase-admin";
 import schedule from "node-schedule";
 import { v4 as uuid } from "uuid";
 import { config, getFirebaseApp } from "../../config";
+import { ModelFamily } from "../../key-management";
 import { logger } from "../../logger";
 
 const log = logger.child({ module: "users" });
 
 // TODO: Consolidate model families with QueuePartition and KeyProvider.
-type QuotaModel = "claude" | "turbo" | "gpt4";
+type QuotaModel = ModelFamily;
 
 export interface User {
   /** The user's personal access token. */
@@ -96,7 +97,7 @@ export function createUser() {
     ip: [],
     type: "normal",
     promptCount: 0,
-    tokenCounts: { turbo: 0, gpt4: 0, claude: 0 },
+    tokenCounts: { turbo: 0, gpt4: 0, "gpt4-32k": 0, claude: 0 },
     tokenLimits: { ...config.tokenQuota },
     createdAt: Date.now(),
   });
@@ -125,7 +126,7 @@ export function upsertUser(user: UserUpdate) {
     ip: [],
     type: "normal",
     promptCount: 0,
-    tokenCounts: { turbo: 0, gpt4: 0, claude: 0 },
+    tokenCounts: { turbo: 0, gpt4: 0, "gpt4-32k": 0, claude: 0 },
     tokenLimits: { ...config.tokenQuota },
     createdAt: Date.now(),
   };
@@ -281,8 +282,11 @@ async function flushUsers() {
   log.info({ users: Object.keys(updates).length }, "Flushed users to Firebase");
 }
 
-// TODO: add gpt-4-32k models; use key-management/models.ts for family mapping
+// TODO: use key-management/models.ts for family mapping
 function getModelFamilyForQuotaUsage(model: string): QuotaModel {
+  if (model.includes("32k")) {
+    return "gpt4-32k";
+  }
   if (model.startsWith("gpt-4")) {
     return "gpt4";
   }