diff --git a/internal/providers/configs/vertexai.json b/internal/providers/configs/vertexai.json
index 6af6cde91f39b550cb82bc3d93220af3c4d5a88e..b81b77e9e39fb18e3e9b88dc5d838247c7e7c5af 100644
--- a/internal/providers/configs/vertexai.json
+++ b/internal/providers/configs/vertexai.json
@@ -94,7 +94,7 @@
       "cost_per_1m_out": 15,
       "cost_per_1m_in_cached": 3.75,
       "cost_per_1m_out_cached": 0.3,
-      "context_window": 200000,
+      "context_window": 1000000,
       "default_max_tokens": 50000,
       "can_reason": true,
       "reasoning_levels": ["low", "medium", "high", "max"],
@@ -120,7 +120,7 @@
       "cost_per_1m_out": 25,
       "cost_per_1m_in_cached": 6.25,
       "cost_per_1m_out_cached": 0.50,
-      "context_window": 200000,
+      "context_window": 1000000,
       "default_max_tokens": 126000,
       "can_reason": true,
       "reasoning_levels": ["low", "medium", "high", "max"],