diff --git a/.changeset/tall-donuts-divide.md b/.changeset/tall-donuts-divide.md
new file mode 100644
index 00000000000..f1099a3827e
--- /dev/null
+++ b/.changeset/tall-donuts-divide.md
@@ -0,0 +1,5 @@
+---
+"@thirdweb-dev/service-utils": patch
+---
+
+feat: add promptTokens and completionTokens fields to usage
diff --git a/packages/service-utils/src/core/usage.ts b/packages/service-utils/src/core/usage.ts
index f71ec2ccd24..faaf2e9cc33 100644
--- a/packages/service-utils/src/core/usage.ts
+++ b/packages/service-utils/src/core/usage.ts
@@ -76,5 +76,7 @@ export const usageEventSchema = z.object({
   onRampId: z.string().optional(),
   evmRequestParams: z.string().optional(),
   providerIp: z.string().optional(),
+  promptTokens: z.number().int().nonnegative().optional(),
+  completionTokens: z.number().int().nonnegative().optional(),
 });
 export type UsageEvent = z.infer<typeof usageEventSchema>;