diff --git a/.env.example b/.env.example
index 44ef9b936..e3cfad573 100644
--- a/.env.example
+++ b/.env.example
@@ -45,6 +45,15 @@ CYPHER_ENDPOINT=http://localhost:11434/v1
 # CYPHER_MODEL=gemini-2.5-flash
 # CYPHER_API_KEY=your-google-api-key
 
+# Example 6: All DeepSeek
+# ORCHESTRATOR_PROVIDER=deepseek
+# ORCHESTRATOR_MODEL=deepseek-reasoner
+# ORCHESTRATOR_API_KEY=sk-your-deepseek-key
+
+# CYPHER_PROVIDER=deepseek
+# CYPHER_MODEL=deepseek-chat
+# CYPHER_API_KEY=sk-your-deepseek-key
+
 # Memgraph settings
 MEMGRAPH_HOST=localhost
 MEMGRAPH_PORT=7687
diff --git a/README.md b/README.md
index bf8a1c628..8ce4b1bb8 100644
--- a/README.md
+++ b/README.md
@@ -184,7 +184,19 @@ CYPHER_MODEL=gemini-2.5-flash
 CYPHER_API_KEY=your-google-api-key
 ```
 
-#### Option 4: Mixed Providers
+#### Option 4: All Deepseek Models
+```bash
+# .env file
+ORCHESTRATOR_PROVIDER=deepseek
+ORCHESTRATOR_MODEL=deepseek-reasoner
+ORCHESTRATOR_API_KEY=sk-your-deepseek-key
+
+CYPHER_PROVIDER=deepseek
+CYPHER_MODEL=deepseek-chat
+CYPHER_API_KEY=sk-your-deepseek-key
+```
+
+#### Option 5: Mixed Providers
 ```bash
 # .env file - Google orchestrator + Ollama cypher
 ORCHESTRATOR_PROVIDER=google
@@ -555,8 +567,8 @@ Configuration is managed through environment variables in `.env` file:
 ### Provider-Specific Settings
 
 #### Orchestrator Model Configuration
-- `ORCHESTRATOR_PROVIDER`: Provider name (`google`, `openai`, `ollama`)
-- `ORCHESTRATOR_MODEL`: Model ID (e.g., `gemini-2.5-pro`, `gpt-4o`, `llama3.2`)
+- `ORCHESTRATOR_PROVIDER`: Provider name (`google`, `openai`, `deepseek`, `ollama`)
+- `ORCHESTRATOR_MODEL`: Model ID (e.g., `gemini-2.5-pro`, `gpt-4o`, `deepseek-reasoner`, `llama3.2`)
 - `ORCHESTRATOR_API_KEY`: API key for the provider (if required)
 - `ORCHESTRATOR_ENDPOINT`: Custom endpoint URL (if required)
 - `ORCHESTRATOR_PROJECT_ID`: Google Cloud project ID (for Vertex AI)
@@ -566,8 +578,8 @@ Configuration is managed through environment variables in `.env` file:
 - `ORCHESTRATOR_SERVICE_ACCOUNT_FILE`: Path to service account file (for Vertex AI)
 
 #### Cypher Model Configuration
-- `CYPHER_PROVIDER`: Provider name (`google`, `openai`, `ollama`)
-- `CYPHER_MODEL`: Model ID (e.g., `gemini-2.5-flash`, `gpt-4o-mini`, `codellama`)
+- `CYPHER_PROVIDER`: Provider name (`google`, `openai`, `deepseek`, `ollama`)
+- `CYPHER_MODEL`: Model ID (e.g., `gemini-2.5-flash`, `gpt-4o-mini`, `deepseek-chat`, `codellama`)
 - `CYPHER_API_KEY`: API key for the provider (if required)
 - `CYPHER_ENDPOINT`: Custom endpoint URL (if required)
 - `CYPHER_PROJECT_ID`: Google Cloud project ID (for Vertex AI)
diff --git a/codebase_rag/providers/base.py b/codebase_rag/providers/base.py
index d525c1e27..e83d3c4ef 100644
--- a/codebase_rag/providers/base.py
+++ b/codebase_rag/providers/base.py
@@ -125,6 +125,37 @@ def create_model(self, model_id: str, **kwargs: Any) -> OpenAIResponsesModel:
         return OpenAIResponsesModel(model_id, provider=provider, **kwargs)
 
 
+class DeepSeekProvider(ModelProvider):
+    """DeepSeek provider."""
+
+    def __init__(
+        self,
+        api_key: str | None = None,
+        endpoint: str = "https://api.deepseek.com",
+        **kwargs: Any,
+    ) -> None:
+        super().__init__(**kwargs)
+        self.api_key = api_key
+        self.endpoint = endpoint
+
+    @property
+    def provider_name(self) -> str:
+        return "deepseek"
+
+    def validate_config(self) -> None:
+        if not self.api_key:
+            raise ValueError(
+                "DeepSeek provider requires api_key. "
+                "Set ORCHESTRATOR_API_KEY or CYPHER_API_KEY in .env file."
+            )
+
+    def create_model(self, model_id: str, **kwargs: Any) -> OpenAIModel:
+        self.validate_config()
+
+        provider = PydanticOpenAIProvider(api_key=self.api_key, base_url=self.endpoint)
+        return OpenAIModel(model_id, provider=provider, **kwargs)
+
+
 class OllamaProvider(ModelProvider):
     """Ollama local provider."""
 
@@ -164,6 +195,7 @@ def create_model(self, model_id: str, **kwargs: Any) -> OpenAIModel:
     "google": GoogleProvider,
     "openai": OpenAIProvider,
     "ollama": OllamaProvider,
+    "deepseek": DeepSeekProvider,
 }