diff --git a/src/agents/context-window-guard.e2e.test.ts b/src/agents/context-window-guard.e2e.test.ts
index 8758103a4c4..adabb92d9c6 100644
--- a/src/agents/context-window-guard.e2e.test.ts
+++ b/src/agents/context-window-guard.e2e.test.ts
@@ -8,17 +8,17 @@ import {
 } from "./context-window-guard.js";
 
 describe("context-window-guard", () => {
-  it("blocks below 16k (model metadata)", () => {
+  it("blocks below 1024 (model metadata)", () => {
     const info = resolveContextWindowInfo({
       cfg: undefined,
       provider: "openrouter",
       modelId: "tiny",
-      modelContextWindow: 8000,
+      modelContextWindow: 512,
       defaultTokens: 200_000,
     });
     const guard = evaluateContextWindowGuard({ info });
     expect(guard.source).toBe("model");
-    expect(guard.tokens).toBe(8000);
+    expect(guard.tokens).toBe(512);
     expect(guard.shouldWarn).toBe(true);
     expect(guard.shouldBlock).toBe(true);
   });
@@ -64,7 +64,7 @@ describe("context-window-guard", () => {
                 reasoning: false,
                 input: ["text"],
                 cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
-                contextWindow: 12_000,
+                contextWindow: 512,
                 maxTokens: 256,
               },
             ],
@@ -143,7 +143,7 @@ describe("context-window-guard", () => {
   });
 
   it("exports thresholds as expected", () => {
-    expect(CONTEXT_WINDOW_HARD_MIN_TOKENS).toBe(16_000);
+    expect(CONTEXT_WINDOW_HARD_MIN_TOKENS).toBe(1_024);
     expect(CONTEXT_WINDOW_WARN_BELOW_TOKENS).toBe(32_000);
   });
 });
diff --git a/src/agents/context-window-guard.ts b/src/agents/context-window-guard.ts
index 1dc38870bf6..f908986d3c1 100644
--- a/src/agents/context-window-guard.ts
+++ b/src/agents/context-window-guard.ts
@@ -1,6 +1,6 @@
 import type { OpenClawConfig } from "../config/config.js";
 
-export const CONTEXT_WINDOW_HARD_MIN_TOKENS = 16_000;
+export const CONTEXT_WINDOW_HARD_MIN_TOKENS = 1_024;
 export const CONTEXT_WINDOW_WARN_BELOW_TOKENS = 32_000;
 
 export type ContextWindowSource = "model" | "modelsConfig" | "agentContextTokens" | "default";