diff --git a/core/src/main/java/com/google/adk/models/OllamaBaseLM.java b/core/src/main/java/com/google/adk/models/OllamaBaseLM.java
index cdd7834a9..8a42cf9e4 100644
--- a/core/src/main/java/com/google/adk/models/OllamaBaseLM.java
+++ b/core/src/main/java/com/google/adk/models/OllamaBaseLM.java
@@ -63,6 +63,9 @@ public class OllamaBaseLM extends BaseLlm {
   public static String OLLAMA_EP = "OLLAMA_API_BASE";
   public String D_URL = null;
 
+  private int numCtx = 32768;
+  private boolean think = false;
+
   // Corrected the logger name to use OllamaBaseLM.class
   private static final Logger logger = LoggerFactory.getLogger(OllamaBaseLM.class);
 
@@ -81,6 +84,22 @@ public OllamaBaseLM(String model, String OLLAMA_EP) {
     this.D_URL = OLLAMA_EP;
   }
 
+  public int getNumCtx() {
+    return numCtx;
+  }
+
+  public void setNumCtx(int numCtx) {
+    this.numCtx = numCtx;
+  }
+
+  public boolean isThink() {
+    return think;
+  }
+
+  public void setThink(boolean think) {
+    this.think = think;
+  }
+
   @Override
   public Flowable<LlmResponse> generateContent(LlmRequest llmRequest, boolean stream) {
     if (stream) {
@@ -665,10 +684,10 @@ public BufferedReader callLLMChatStream(String model, JSONArray messages, JSONAr
       JSONObject payload = new JSONObject();
       payload.put("model", model);
       payload.put("stream", true);
-      payload.put("think", false);
+      payload.put("think", this.think);
 
       JSONObject options = new JSONObject();
-      options.put("num_ctx", 4096);
+      options.put("num_ctx", this.numCtx);
       payload.put("options", options);
 
       payload.put("messages", messages);
@@ -835,10 +854,10 @@ public JSONObject callLLMChat(
       payload.put("model", model);
       payload.put(
           "stream", false); // Assuming non-streaming as per current generateContent implementation
-      payload.put("think", false);
+      payload.put("think", this.think);
 
       JSONObject options = new JSONObject();
-      options.put("num_ctx", 4096);
+      options.put("num_ctx", this.numCtx);
       payload.put("options", options);
       payload.put("temperature", temperature);