diff --git a/packages/opencode/src/provider/transform.ts b/packages/opencode/src/provider/transform.ts
index 6009891d05e..efb6ef760ad 100644
--- a/packages/opencode/src/provider/transform.ts
+++ b/packages/opencode/src/provider/transform.ts
@@ -480,7 +480,7 @@ function mapProviderOptions(
 export function message(msgs: ModelMessage[], model: Provider.Model, options: Record<string, unknown>) {
   msgs = unsupportedParts(msgs, model)
   msgs = normalizeMessages(msgs, model, options)
-  // kilocode_change start - apply caching for anthropic, alibaba, and GPT-5.6+ openai/azure
+  // kilocode_change start - apply caching for anthropic, alibaba, and GPT-5.6+ openai/azure/kilo-gateway
   if (
     (model.providerID === "anthropic" ||
       model.providerID === "google-vertex-anthropic" ||
@@ -492,8 +492,10 @@ export function message(msgs: ModelMessage[], model: Provider.Model, options: Re
       model.api.npm === "@ai-sdk/alibaba" ||
       ((model.api.npm === "@ai-sdk/openai" ||
         model.api.npm === "@ai-sdk/azure" ||
+        model.api.npm === "@kilocode/kilo-gateway" ||
         model.providerID === "openai" ||
-        model.providerID === "azure") &&
+        model.providerID === "azure" ||
+        model.providerID === "kilo") &&
         supportsPromptCacheBreakpoint(model.api.id))) &&
     model.api.npm !== "@ai-sdk/gateway"
   ) {
diff --git a/packages/opencode/test/provider/transform.test.ts b/packages/opencode/test/provider/transform.test.ts
index 2f8c7d23b18..74ef174ade8 100644
--- a/packages/opencode/test/provider/transform.test.ts
+++ b/packages/opencode/test/provider/transform.test.ts
@@ -3127,6 +3127,41 @@ describe("ProviderTransform.message - cache control on gateway", () => {
     })
     expect(result[1].content[1].providerOptions?.openai?.promptCacheBreakpoint).toBeUndefined()
   })
+
+  test("kilo gateway with openai gpt-5.6 applies caching options", () => {
+    const model = createModel({
+      providerID: "kilo",
+      api: {
+        id: "openai/gpt-5.6",
+        url: "https://api.kilo.ai/api/gateway",
+        npm: "@kilocode/kilo-gateway",
+      },
+      id: "openai/gpt-5.6",
+    })
+    const msgs = [
+      {
+        role: "system",
+        content: "You are a helpful assistant",
+      },
+      {
+        role: "user",
+        content: "Hello",
+      },
+    ] as any[]
+
+    const result = ProviderTransform.message(msgs, model, {}) as any[]
+
+    expect(result[0].providerOptions.openrouter).toEqual({
+      cacheControl: {
+        type: "ephemeral",
+      },
+    })
+    expect(result[1].providerOptions.openrouter).toEqual({
+      cacheControl: {
+        type: "ephemeral",
+      },
+    })
+  })
   // kilocode_change end
 })