diff --git a/litellm/model_prices_and_context_window_backup.json b/litellm/model_prices_and_context_window_backup.json
index 62e576ea0f7..69d1ec0d25d 100644
--- a/litellm/model_prices_and_context_window_backup.json
+++ b/litellm/model_prices_and_context_window_backup.json
@@ -26296,6 +26296,25 @@
         "supports_function_calling": true,
         "supports_response_schema": false
     },
+    "oci/xai.grok-4.3": {
+        "cache_read_input_token_cost": 2e-07,
+        "cache_read_input_token_cost_above_200k_tokens": 4e-07,
+        "input_cost_per_token": 1.25e-06,
+        "input_cost_per_token_above_200k_tokens": 2.5e-06,
+        "litellm_provider": "oci",
+        "max_input_tokens": 1000000,
+        "max_output_tokens": 1000000,
+        "max_tokens": 1000000,
+        "mode": "chat",
+        "output_cost_per_token": 2.5e-06,
+        "output_cost_per_token_above_200k_tokens": 5e-06,
+        "source": "https://docs.oracle.com/en-us/iaas/Content/generative-ai/xai-grok-4-3.htm",
+        "supports_function_calling": true,
+        "supports_prompt_caching": true,
+        "supports_reasoning": true,
+        "supports_response_schema": false,
+        "supports_vision": true
+    },
     "oci/xai.grok-code-fast-1": {
         "input_cost_per_token": 5e-06,
         "litellm_provider": "oci",
diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index 62553e46ac1..35ea62f37ed 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -26438,6 +26438,25 @@
         "supports_function_calling": true,
         "supports_response_schema": false
     },
+    "oci/xai.grok-4.3": {
+        "cache_read_input_token_cost": 2e-07,
+        "cache_read_input_token_cost_above_200k_tokens": 4e-07,
+        "input_cost_per_token": 1.25e-06,
+        "input_cost_per_token_above_200k_tokens": 2.5e-06,
+        "litellm_provider": "oci",
+        "max_input_tokens": 1000000,
+        "max_output_tokens": 1000000,
+        "max_tokens": 1000000,
+        "mode": "chat",
+        "output_cost_per_token": 2.5e-06,
+        "output_cost_per_token_above_200k_tokens": 5e-06,
+        "source": "https://docs.oracle.com/en-us/iaas/Content/generative-ai/xai-grok-4-3.htm",
+        "supports_function_calling": true,
+        "supports_prompt_caching": true,
+        "supports_reasoning": true,
+        "supports_response_schema": false,
+        "supports_vision": true
+    },
     "oci/xai.grok-code-fast-1": {
         "input_cost_per_token": 5e-06,
         "litellm_provider": "oci",
diff --git a/tests/test_litellm/test_oci_xai_grok_4_3_model_metadata.py b/tests/test_litellm/test_oci_xai_grok_4_3_model_metadata.py
new file mode 100644
index 00000000000..c95eca5375a
--- /dev/null
+++ b/tests/test_litellm/test_oci_xai_grok_4_3_model_metadata.py
@@ -0,0 +1,52 @@
+import json
+from pathlib import Path
+
+
+def test_oci_xai_grok_4_3_model_info():
+    json_path = Path(__file__).parents[2] / "model_prices_and_context_window.json"
+    with open(json_path) as f:
+        model_cost = json.load(f)
+
+    model = "oci/xai.grok-4.3"
+    info = model_cost.get(model)
+    assert (
+        info is not None
+    ), f"{model} not found in model_prices_and_context_window.json"
+
+    assert info["litellm_provider"] == "oci"
+    assert info["mode"] == "chat"
+
+    assert info["input_cost_per_token"] == 1.25e-06
+    assert info["output_cost_per_token"] == 2.5e-06
+    assert info["cache_read_input_token_cost"] == 2e-07
+
+    assert info["input_cost_per_token_above_200k_tokens"] == 2.5e-06
+    assert info["output_cost_per_token_above_200k_tokens"] == 5e-06
+    assert info["cache_read_input_token_cost_above_200k_tokens"] == 4e-07
+
+    assert info["max_input_tokens"] == 1000000
+    assert info["max_output_tokens"] == 1000000
+    assert info["max_tokens"] == 1000000
+
+    assert info["supports_function_calling"] is True
+    assert info["supports_vision"] is True
+    assert info["supports_prompt_caching"] is True
+    assert info["supports_reasoning"] is True
+    assert info["supports_response_schema"] is False
+
+
+def test_oci_xai_grok_4_3_backup_matches_main():
+    """Ensure the bundled model cost map stays in sync with the canonical file."""
+    repo_root = Path(__file__).parents[2]
+    main_path = repo_root / "model_prices_and_context_window.json"
+    backup_path = repo_root / "litellm" / "model_prices_and_context_window_backup.json"
+
+    with open(main_path) as f:
+        main_cost = json.load(f)
+    with open(backup_path) as f:
+        backup_cost = json.load(f)
+
+    model = "oci/xai.grok-4.3"
+    assert backup_cost.get(model) == main_cost.get(
+        model
+    ), f"{model} differs between main and backup model cost maps"