diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index 8dcd52cae2d..997ce2f6640 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -9641,6 +9641,56 @@
         "supports_system_messages": true,
         "supports_tool_choice": false
     },
+    "deepseek-v4-flash": {
+        "cache_creation_input_token_cost": 0.0,
+        "cache_read_input_token_cost": 2.8e-08,
+        "input_cost_per_token": 1.4e-07,
+        "input_cost_per_token_cache_hit": 2.8e-08,
+        "litellm_provider": "deepseek",
+        "max_input_tokens": 1000000,
+        "max_output_tokens": 384000,
+        "max_tokens": 384000,
+        "mode": "chat",
+        "output_cost_per_token": 2.8e-07,
+        "source": "https://api-docs.deepseek.com/quick_start/pricing",
+        "supported_endpoints": [
+            "/v1/chat/completions"
+        ],
+        "supports_assistant_prefill": true,
+        "supports_function_calling": true,
+        "supports_native_streaming": true,
+        "supports_parallel_function_calling": true,
+        "supports_prompt_caching": true,
+        "supports_reasoning": true,
+        "supports_response_schema": true,
+        "supports_system_messages": true,
+        "supports_tool_choice": true
+    },
+    "deepseek-v4-pro": {
+        "cache_creation_input_token_cost": 0.0,
+        "cache_read_input_token_cost": 1.4e-07,
+        "input_cost_per_token": 1.74e-06,
+        "input_cost_per_token_cache_hit": 1.4e-07,
+        "litellm_provider": "deepseek",
+        "max_input_tokens": 1000000,
+        "max_output_tokens": 384000,
+        "max_tokens": 384000,
+        "mode": "chat",
+        "output_cost_per_token": 3.48e-06,
+        "source": "https://api-docs.deepseek.com/quick_start/pricing",
+        "supported_endpoints": [
+            "/v1/chat/completions"
+        ],
+        "supports_assistant_prefill": true,
+        "supports_function_calling": true,
+        "supports_native_streaming": true,
+        "supports_parallel_function_calling": true,
+        "supports_prompt_caching": true,
+        "supports_reasoning": true,
+        "supports_response_schema": true,
+        "supports_system_messages": true,
+        "supports_tool_choice": true
+    },
     "dashscope/qwen-coder": {
         "input_cost_per_token": 3e-07,
         "litellm_provider": "dashscope",
@@ -12231,6 +12281,56 @@
         "supports_reasoning": true,
         "supports_tool_choice": true
     },
+    "deepseek/deepseek-v4-flash": {
+        "cache_creation_input_token_cost": 0.0,
+        "cache_read_input_token_cost": 2.8e-08,
+        "input_cost_per_token": 1.4e-07,
+        "input_cost_per_token_cache_hit": 2.8e-08,
+        "litellm_provider": "deepseek",
+        "max_input_tokens": 1000000,
+        "max_output_tokens": 384000,
+        "max_tokens": 384000,
+        "mode": "chat",
+        "output_cost_per_token": 2.8e-07,
+        "source": "https://api-docs.deepseek.com/quick_start/pricing",
+        "supported_endpoints": [
+            "/v1/chat/completions"
+        ],
+        "supports_assistant_prefill": true,
+        "supports_function_calling": true,
+        "supports_native_streaming": true,
+        "supports_parallel_function_calling": true,
+        "supports_prompt_caching": true,
+        "supports_reasoning": true,
+        "supports_response_schema": true,
+        "supports_system_messages": true,
+        "supports_tool_choice": true
+    },
+    "deepseek/deepseek-v4-pro": {
+        "cache_creation_input_token_cost": 0.0,
+        "cache_read_input_token_cost": 1.4e-07,
+        "input_cost_per_token": 1.74e-06,
+        "input_cost_per_token_cache_hit": 1.4e-07,
+        "litellm_provider": "deepseek",
+        "max_input_tokens": 1000000,
+        "max_output_tokens": 384000,
+        "max_tokens": 384000,
+        "mode": "chat",
+        "output_cost_per_token": 3.48e-06,
+        "source": "https://api-docs.deepseek.com/quick_start/pricing",
+        "supported_endpoints": [
+            "/v1/chat/completions"
+        ],
+        "supports_assistant_prefill": true,
+        "supports_function_calling": true,
+        "supports_native_streaming": true,
+        "supports_parallel_function_calling": true,
+        "supports_prompt_caching": true,
+        "supports_reasoning": true,
+        "supports_response_schema": true,
+        "supports_system_messages": true,
+        "supports_tool_choice": true
+    },
     "deepseek.v3-v1:0": {
         "input_cost_per_token": 5.8e-07,
         "litellm_provider": "bedrock_converse",
diff --git a/tests/test_litellm/test_deepseek_model_metadata.py b/tests/test_litellm/test_deepseek_model_metadata.py
index 4900af5d97d..e2b68f05a94 100644
--- a/tests/test_litellm/test_deepseek_model_metadata.py
+++ b/tests/test_litellm/test_deepseek_model_metadata.py
@@ -178,3 +178,98 @@ class TestBareModelFallback:
         finally:
             if key in litellm.model_cost and original is not None:
                 litellm.model_cost[key]["supports_function_calling"] = original
+
+
+# ---------------------------------------------------------------------------
+# DeepSeek V4 model metadata tests
+# ---------------------------------------------------------------------------
+
+
+class TestDeepSeekV4ModelMetadata:
+    """Verify that DeepSeek V4 Flash and V4 Pro model entries exist
+    and have correct metadata in the main JSON file."""
+
+    def _load_main_json(self) -> dict:
+        main_path = os.path.join(
+            os.path.dirname(os.path.dirname(litellm.__file__)),
+            "model_prices_and_context_window.json",
+        )
+        with open(main_path, encoding="utf-8") as f:
+            return json.load(f)
+
+    def test_v4_flash_exists_prefixed(self):
+        data = self._load_main_json()
+        assert "deepseek/deepseek-v4-flash" in data
+
+    def test_v4_pro_exists_prefixed(self):
+        data = self._load_main_json()
+        assert "deepseek/deepseek-v4-pro" in data
+
+    def test_v4_flash_exists_bare(self):
+        data = self._load_main_json()
+        assert "deepseek-v4-flash" in data
+
+    def test_v4_pro_exists_bare(self):
+        data = self._load_main_json()
+        assert "deepseek-v4-pro" in data
+
+    def test_v4_flash_context_window(self):
+        data = self._load_main_json()
+        entry = data["deepseek/deepseek-v4-flash"]
+        assert entry["max_input_tokens"] == 1000000
+        assert entry["max_output_tokens"] == 384000
+
+    def test_v4_pro_context_window(self):
+        data = self._load_main_json()
+        entry = data["deepseek/deepseek-v4-pro"]
+        assert entry["max_input_tokens"] == 1000000
+        assert entry["max_output_tokens"] == 384000
+
+    def test_v4_flash_supports_function_calling(self):
+        data = self._load_main_json()
+        entry = data["deepseek/deepseek-v4-flash"]
+        assert entry.get("supports_function_calling") is True
+        assert entry.get("supports_tool_choice") is True
+
+    def test_v4_pro_supports_function_calling(self):
+        data = self._load_main_json()
+        entry = data["deepseek/deepseek-v4-pro"]
+        assert entry.get("supports_function_calling") is True
+        assert entry.get("supports_tool_choice") is True
+
+    def test_v4_flash_supports_reasoning(self):
+        data = self._load_main_json()
+        entry = data["deepseek/deepseek-v4-flash"]
+        assert entry.get("supports_reasoning") is True
+
+    def test_v4_pro_supports_reasoning(self):
+        data = self._load_main_json()
+        entry = data["deepseek/deepseek-v4-pro"]
+        assert entry.get("supports_reasoning") is True
+
+    def test_v4_flash_provider_is_deepseek(self):
+        data = self._load_main_json()
+        entry = data["deepseek/deepseek-v4-flash"]
+        assert entry["litellm_provider"] == "deepseek"
+
+    def test_v4_pro_provider_is_deepseek(self):
+        data = self._load_main_json()
+        entry = data["deepseek/deepseek-v4-pro"]
+        assert entry["litellm_provider"] == "deepseek"
+
+    def test_v4_flash_bare_and_prefixed_match(self):
+        """Bare and prefixed entries must have the same context window."""
+        data = self._load_main_json()
+        bare = data["deepseek-v4-flash"]
+        prefixed = data["deepseek/deepseek-v4-flash"]
+        assert bare["max_input_tokens"] == prefixed["max_input_tokens"]
+        assert bare["max_output_tokens"] == prefixed["max_output_tokens"]
+
+    def test_v4_pro_bare_and_prefixed_match(self):
+        """Bare and prefixed entries must have the same context window."""
+        data = self._load_main_json()
+        bare = data["deepseek-v4-pro"]
+        prefixed = data["deepseek/deepseek-v4-pro"]
+        assert bare["max_input_tokens"] == prefixed["max_input_tokens"]
+        assert bare["max_output_tokens"] == prefixed["max_output_tokens"]
+