diff --git a/litellm/model_prices_and_context_window_backup.json b/litellm/model_prices_and_context_window_backup.json
index 13a45fd165..a1e3e42a9c 100644
--- a/litellm/model_prices_and_context_window_backup.json
+++ b/litellm/model_prices_and_context_window_backup.json
@@ -33337,6 +33337,72 @@
         "source": "https://console.cloud.google.com/vertex-ai/publishers/openai/model-garden/gpt-oss-120b-maas",
         "supports_reasoning": true
     },
+    "vertex_ai/xai/grok-4.1-fast-non-reasoning": {
+        "cache_read_input_token_cost": 5e-08,
+        "input_cost_per_token": 2e-07,
+        "litellm_provider": "vertex_ai",
+        "max_input_tokens": 2000000,
+        "max_output_tokens": 2000000,
+        "max_tokens": 2000000,
+        "mode": "chat",
+        "output_cost_per_token": 5e-07,
+        "source": "https://docs.x.ai/docs/models (Vertex AI Model Garden)",
+        "supports_function_calling": true,
+        "supports_response_schema": true,
+        "supports_tool_choice": true,
+        "supports_vision": true,
+        "supports_web_search": true
+    },
+    "vertex_ai/xai/grok-4.1-fast-reasoning": {
+        "cache_read_input_token_cost": 5e-08,
+        "input_cost_per_token": 2e-07,
+        "litellm_provider": "vertex_ai",
+        "max_input_tokens": 2000000,
+        "max_output_tokens": 2000000,
+        "max_tokens": 2000000,
+        "mode": "chat",
+        "output_cost_per_token": 5e-07,
+        "source": "https://docs.x.ai/docs/models (Vertex AI Model Garden)",
+        "supports_function_calling": true,
+        "supports_reasoning": true,
+        "supports_response_schema": true,
+        "supports_tool_choice": true,
+        "supports_vision": true,
+        "supports_web_search": true
+    },
+    "vertex_ai/xai/grok-4.20-non-reasoning": {
+        "cache_read_input_token_cost": 2e-07,
+        "input_cost_per_token": 2e-06,
+        "litellm_provider": "vertex_ai",
+        "max_input_tokens": 2000000,
+        "max_output_tokens": 2000000,
+        "max_tokens": 2000000,
+        "mode": "chat",
+        "output_cost_per_token": 6e-06,
+        "source": "https://docs.x.ai/docs/models (Vertex AI Model Garden)",
+        "supports_function_calling": true,
+        "supports_response_schema": true,
+        "supports_tool_choice": true,
+        "supports_vision": true,
+        "supports_web_search": true
+    },
+    "vertex_ai/xai/grok-4.20-reasoning": {
+        "cache_read_input_token_cost": 2e-07,
+        "input_cost_per_token": 2e-06,
+        "litellm_provider": "vertex_ai",
+        "max_input_tokens": 2000000,
+        "max_output_tokens": 2000000,
+        "max_tokens": 2000000,
+        "mode": "chat",
+        "output_cost_per_token": 6e-06,
+        "source": "https://docs.x.ai/docs/models (Vertex AI Model Garden)",
+        "supports_function_calling": true,
+        "supports_reasoning": true,
+        "supports_response_schema": true,
+        "supports_tool_choice": true,
+        "supports_vision": true,
+        "supports_web_search": true
+    },
     "vertex_ai/qwen/qwen3-235b-a22b-instruct-2507-maas": {
         "input_cost_per_token": 2.5e-07,
         "litellm_provider": "vertex_ai-qwen_models",
diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index a3047118fe..d21a4bf11d 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -33391,7 +33391,7 @@
         "source": "https://console.cloud.google.com/vertex-ai/publishers/openai/model-garden/gpt-oss-120b-maas",
         "supports_reasoning": true
     },
-    "vertex_ai/openai/xai/grok-4.1-fast-non-reasoning": {
+    "vertex_ai/xai/grok-4.1-fast-non-reasoning": {
         "cache_read_input_token_cost": 5e-08,
         "input_cost_per_token": 2e-07,
         "litellm_provider": "vertex_ai",
@@ -33407,7 +33407,7 @@
         "supports_vision": true,
         "supports_web_search": true
     },
-    "vertex_ai/openai/xai/grok-4.1-fast-reasoning": {
+    "vertex_ai/xai/grok-4.1-fast-reasoning": {
         "cache_read_input_token_cost": 5e-08,
         "input_cost_per_token": 2e-07,
         "litellm_provider": "vertex_ai",
@@ -33424,7 +33424,7 @@
         "supports_vision": true,
         "supports_web_search": true
     },
-    "vertex_ai/openai/xai/grok-4.20-non-reasoning": {
+    "vertex_ai/xai/grok-4.20-non-reasoning": {
         "cache_read_input_token_cost": 2e-07,
         "input_cost_per_token": 2e-06,
         "litellm_provider": "vertex_ai",
@@ -33440,7 +33440,7 @@
         "supports_vision": true,
         "supports_web_search": true
     },
-    "vertex_ai/openai/xai/grok-4.20-reasoning": {
+    "vertex_ai/xai/grok-4.20-reasoning": {
         "cache_read_input_token_cost": 2e-07,
         "input_cost_per_token": 2e-06,
         "litellm_provider": "vertex_ai",