diff --git a/e2e-test/flink-agents-end-to-end-tests-integration/src/test/java/org/apache/flink/agents/integration/test/ChatModelIntegrationAgent.java b/e2e-test/flink-agents-end-to-end-tests-integration/src/test/java/org/apache/flink/agents/integration/test/ChatModelIntegrationAgent.java
index 6ce40a53..a3f44b8f 100644
--- a/e2e-test/flink-agents-end-to-end-tests-integration/src/test/java/org/apache/flink/agents/integration/test/ChatModelIntegrationAgent.java
+++ b/e2e-test/flink-agents-end-to-end-tests-integration/src/test/java/org/apache/flink/agents/integration/test/ChatModelIntegrationAgent.java
@@ -67,7 +67,7 @@
  * the model is allowed to call.
  */
 public class ChatModelIntegrationAgent extends Agent {
-    public static final String OLLAMA_MODEL = "qwen3:0.6b";
+    public static final String OLLAMA_MODEL = "qwen3:8b";
 
     @ChatModelConnection
     public static ResourceDescriptor chatModelConnection() {
diff --git a/e2e-test/flink-agents-end-to-end-tests-integration/src/test/java/org/apache/flink/agents/integration/test/ReActAgentTest.java b/e2e-test/flink-agents-end-to-end-tests-integration/src/test/java/org/apache/flink/agents/integration/test/ReActAgentTest.java
index 10905fc5..79c18b58 100644
--- a/e2e-test/flink-agents-end-to-end-tests-integration/src/test/java/org/apache/flink/agents/integration/test/ReActAgentTest.java
+++ b/e2e-test/flink-agents-end-to-end-tests-integration/src/test/java/org/apache/flink/agents/integration/test/ReActAgentTest.java
@@ -53,7 +53,7 @@
 import static org.apache.flink.agents.integration.test.OllamaPreparationUtils.pullModel;
 
 public class ReActAgentTest {
-    public static final String OLLAMA_MODEL = "qwen3:1.7b";
+    public static final String OLLAMA_MODEL = "qwen3:8b";
 
     @org.apache.flink.agents.api.annotation.Tool(
             description = "Useful function to add two numbers.")
diff --git a/python/flink_agents/e2e_tests/e2e_tests_integration/chat_model_integration_agent.py b/python/flink_agents/e2e_tests/e2e_tests_integration/chat_model_integration_agent.py
index 0eaa9fc7..33553078 100644
--- a/python/flink_agents/e2e_tests/e2e_tests_integration/chat_model_integration_agent.py
+++ b/python/flink_agents/e2e_tests/e2e_tests_integration/chat_model_integration_agent.py
@@ -84,7 +84,7 @@ def math_chat_model() -> ResourceDescriptor:
             return ResourceDescriptor(
                 clazz=OllamaChatModelSetup,
                 connection="ollama_connection",
-                model=os.environ.get("OLLAMA_CHAT_MODEL", "qwen3:1.7b"),
+                model=os.environ.get("OLLAMA_CHAT_MODEL", "qwen3:8b"),
                 tools=["add"],
                 extract_reasoning=True,
             )
@@ -114,7 +114,7 @@ def creative_chat_model() -> ResourceDescriptor:
             return ResourceDescriptor(
                 clazz=TongyiChatModelSetup,
                 connection="ollama_connection",
-                model=os.environ.get("OLLAMA_CHAT_MODEL", "qwen3:1.7b"),
+                model=os.environ.get("OLLAMA_CHAT_MODEL", "qwen3:8b"),
                 extract_reasoning=True,
             )
         elif model_provider == "OpenAI":
diff --git a/python/flink_agents/e2e_tests/e2e_tests_integration/chat_model_integration_test.py b/python/flink_agents/e2e_tests/e2e_tests_integration/chat_model_integration_test.py
index 93dd48fd..21ee92ac 100644
--- a/python/flink_agents/e2e_tests/e2e_tests_integration/chat_model_integration_test.py
+++ b/python/flink_agents/e2e_tests/e2e_tests_integration/chat_model_integration_test.py
@@ -30,7 +30,7 @@
 
 TONGYI_MODEL = os.environ.get("TONGYI_CHAT_MODEL", "qwen-plus")
 os.environ["TONGYI_CHAT_MODEL"] = TONGYI_MODEL
-OLLAMA_MODEL = os.environ.get("OLLAMA_CHAT_MODEL", "qwen3:1.7b")
+OLLAMA_MODEL = os.environ.get("OLLAMA_CHAT_MODEL", "qwen3:8b")
 os.environ["OLLAMA_CHAT_MODEL"] = OLLAMA_MODEL
 OPENAI_MODEL = os.environ.get("OPENAI_CHAT_MODEL", "gpt-3.5-turbo")
 os.environ["OPENAI_CHAT_MODEL"] = OPENAI_MODEL
diff --git a/python/flink_agents/e2e_tests/e2e_tests_integration/e2e_tests_mcp/mcp_test.py b/python/flink_agents/e2e_tests/e2e_tests_integration/e2e_tests_mcp/mcp_test.py
index ea54c404..2a108395 100644
--- a/python/flink_agents/e2e_tests/e2e_tests_integration/e2e_tests_mcp/mcp_test.py
+++ b/python/flink_agents/e2e_tests/e2e_tests_integration/e2e_tests_mcp/mcp_test.py
@@ -55,7 +55,7 @@
     OllamaChatModelSetup,
 )
 
-OLLAMA_MODEL = os.environ.get("MCP_OLLAMA_CHAT_MODEL", "qwen3:1.7b")
+OLLAMA_MODEL = os.environ.get("MCP_OLLAMA_CHAT_MODEL", "qwen3:8b")
 MCP_SERVER_ENDPOINT = "http://127.0.0.1:8000/mcp"
 
 
diff --git a/python/flink_agents/e2e_tests/e2e_tests_integration/react_agent_test.py b/python/flink_agents/e2e_tests/e2e_tests_integration/react_agent_test.py
index 630a7f34..b5932103 100644
--- a/python/flink_agents/e2e_tests/e2e_tests_integration/react_agent_test.py
+++ b/python/flink_agents/e2e_tests/e2e_tests_integration/react_agent_test.py
@@ -48,7 +48,7 @@
 
 os.environ["PYTHONPATH"] = sysconfig.get_paths()["purelib"]
 
-OLLAMA_MODEL = os.environ.get("REACT_OLLAMA_MODEL", "qwen3:1.7b")
+OLLAMA_MODEL = os.environ.get("REACT_OLLAMA_MODEL", "qwen3:8b")
 os.environ["OLLAMA_CHAT_MODEL"] = OLLAMA_MODEL