diff --git a/agents-flex-core/src/main/java/com/agentsflex/core/parser/impl/DefaultAiMessageParser.java b/agents-flex-core/src/main/java/com/agentsflex/core/parser/impl/DefaultAiMessageParser.java
new file mode 100644
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+++ b/agents-flex-core/src/main/java/com/agentsflex/core/parser/impl/DefaultAiMessageParser.java
@@ -0,0 +1,207 @@
+/*
+ *  Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
+ *  <p>
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  <p>
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  <p>
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package com.agentsflex.core.parser.impl;
+
+import com.agentsflex.core.message.AiMessage;
+import com.agentsflex.core.message.FunctionCall;
+import com.agentsflex.core.message.MessageStatus;
+import com.agentsflex.core.parser.AiMessageParser;
+import com.agentsflex.core.parser.JSONObjectParser;
+import com.agentsflex.core.util.StringUtil;
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONArray;
+import com.alibaba.fastjson.JSONObject;
+import com.alibaba.fastjson.JSONPath;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+
+
+public class DefaultAiMessageParser implements AiMessageParser {
+
+    private String contentPath;
+    private String reasoningContentPath;
+    private String indexPath;
+    private String totalTokensPath;
+    private String promptTokensPath;
+    private String completionTokensPath;
+    private JSONObjectParser<MessageStatus> statusParser;
+    private JSONObjectParser<List<FunctionCall>> callsParser;
+
+    public String getContentPath() {
+        return contentPath;
+    }
+
+    public void setContentPath(String contentPath) {
+        this.contentPath = contentPath;
+    }
+
+    public String getReasoningContentPath() {
+        return reasoningContentPath;
+    }
+
+    public void setReasoningContentPath(String reasoningContentPath) {
+        this.reasoningContentPath = reasoningContentPath;
+    }
+
+    public String getIndexPath() {
+        return indexPath;
+    }
+
+    public void setIndexPath(String indexPath) {
+        this.indexPath = indexPath;
+    }
+
+    public String getTotalTokensPath() {
+        return totalTokensPath;
+    }
+
+    public void setTotalTokensPath(String totalTokensPath) {
+        this.totalTokensPath = totalTokensPath;
+    }
+
+    public String getPromptTokensPath() {
+        return promptTokensPath;
+    }
+
+    public void setPromptTokensPath(String promptTokensPath) {
+        this.promptTokensPath = promptTokensPath;
+    }
+
+    public String getCompletionTokensPath() {
+        return completionTokensPath;
+    }
+
+    public void setCompletionTokensPath(String completionTokensPath) {
+        this.completionTokensPath = completionTokensPath;
+    }
+
+    public JSONObjectParser<MessageStatus> getStatusParser() {
+        return statusParser;
+    }
+
+    public void setStatusParser(JSONObjectParser<MessageStatus> statusParser) {
+        this.statusParser = statusParser;
+    }
+
+    public JSONObjectParser<List<FunctionCall>> getCallsParser() {
+        return callsParser;
+    }
+
+    public void setCallsParser(JSONObjectParser<List<FunctionCall>> callsParser) {
+        this.callsParser = callsParser;
+    }
+
+    @Override
+    public AiMessage parse(JSONObject rootJson) {
+        AiMessage aiMessage = new AiMessage();
+
+        if (StringUtil.hasText(this.contentPath)) {
+            aiMessage.setContent((String) JSONPath.eval(rootJson, this.contentPath));
+        }
+
+        if (StringUtil.hasText(this.reasoningContentPath)) {
+            aiMessage.setReasoningContent((String) JSONPath.eval(rootJson, this.reasoningContentPath));
+        }
+
+        if (StringUtil.hasText(this.indexPath)) {
+            aiMessage.setIndex((Integer) JSONPath.eval(rootJson, this.indexPath));
+        }
+
+
+        if (StringUtil.hasText(promptTokensPath)) {
+            aiMessage.setPromptTokens((Integer) JSONPath.eval(rootJson, this.promptTokensPath));
+        }
+
+        if (StringUtil.hasText(completionTokensPath)) {
+            aiMessage.setCompletionTokens((Integer) JSONPath.eval(rootJson, this.completionTokensPath));
+        }
+
+        if (StringUtil.hasText(this.totalTokensPath)) {
+            aiMessage.setTotalTokens((Integer) JSONPath.eval(rootJson, this.totalTokensPath));
+        }
+        //some LLMs like Ollama not response the total tokens
+        else if (aiMessage.getPromptTokens() != null && aiMessage.getCompletionTokens() != null) {
+            aiMessage.setTotalTokens(aiMessage.getPromptTokens() + aiMessage.getCompletionTokens());
+        }
+
+        if (this.statusParser != null) {
+            aiMessage.setStatus(this.statusParser.parse(rootJson));
+        }
+
+        if (callsParser != null) {
+            aiMessage.setCalls(callsParser.parse(rootJson));
+        }
+
+        return aiMessage;
+    }
+
+
+    public static DefaultAiMessageParser getChatGPTMessageParser(boolean isStream) {
+        DefaultAiMessageParser aiMessageParser = new DefaultAiMessageParser();
+        if (isStream) {
+            aiMessageParser.setContentPath("$.choices[0].delta.content");
+            aiMessageParser.setReasoningContentPath("$.choices[0].delta.reasoning_content");
+        } else {
+            aiMessageParser.setContentPath("$.choices[0].message.content");
+            aiMessageParser.setReasoningContentPath("$.choices[0].message.reasoning_content");
+        }
+
+        aiMessageParser.setIndexPath("$.choices[0].index");
+        aiMessageParser.setTotalTokensPath("$.usage.total_tokens");
+        aiMessageParser.setPromptTokensPath("$.usage.prompt_tokens");
+        aiMessageParser.setCompletionTokensPath("$.usage.completion_tokens");
+
+        aiMessageParser.setStatusParser(content -> {
+            Object finishReason = JSONPath.eval(content, "$.choices[0].finish_reason");
+            if (finishReason != null) {
+                return MessageStatus.END;
+            }
+            return MessageStatus.MIDDLE;
+        });
+
+        aiMessageParser.setCallsParser(content -> {
+            JSONArray toolCalls = (JSONArray) JSONPath.eval(content, "$.choices[0].message.tool_calls");
+            if (toolCalls == null || toolCalls.isEmpty()) {
+                return Collections.emptyList();
+            }
+            List<FunctionCall> functionCalls = new ArrayList<>();
+            for (int i = 0; i < toolCalls.size(); i++) {
+                JSONObject jsonObject = toolCalls.getJSONObject(i);
+                JSONObject functionObject = jsonObject.getJSONObject("function");
+                if (functionObject != null) {
+                    FunctionCall functionCall = new FunctionCall();
+                    functionCall.setId(jsonObject.getString("id"));
+                    functionCall.setName(functionObject.getString("name"));
+                    Object arguments = functionObject.get("arguments");
+                    if (arguments instanceof Map) {
+                        //noinspection unchecked
+                        functionCall.setArgs((Map<String, Object>) arguments);
+                    } else if (arguments instanceof String) {
+                        //noinspection unchecked
+                        functionCall.setArgs(JSON.parseObject(arguments.toString(), Map.class));
+                    }
+                    functionCalls.add(functionCall);
+                }
+            }
+            return functionCalls;
+        });
+
+        return aiMessageParser;
+    }
+}