diff --git a/agents-flex-core/src/main/java/com/agentsflex/core/llm/ChatOptions.java b/agents-flex-core/src/main/java/com/agentsflex/core/llm/ChatOptions.java
new file mode 100644
index 0000000..3194a7a
--- /dev/null
+++ b/agents-flex-core/src/main/java/com/agentsflex/core/llm/ChatOptions.java
@@ -0,0 +1,138 @@
+/*
+ *  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.llm;
+
+
+import com.agentsflex.core.util.Maps;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 每个大模型都可以有自己的实现类
+ */
+public class ChatOptions {
+
+    public static final ChatOptions DEFAULT = new ChatOptions() {
+        @Override
+        public void setTemperature(Float temperature) {
+            throw new IllegalStateException("Can not set temperature to the default instance.");
+        }
+
+        @Override
+        public void setMaxTokens(Integer maxTokens) {
+            throw new IllegalStateException("Can not set maxTokens to the default instance.");
+        }
+    };
+
+    private String model;
+    private String seed;
+    private Float temperature = 0.8f;
+    private Float topP;
+    private Integer topK;
+    private Integer maxTokens;
+    private List<String> stop;
+
+    /**
+     * 是否开启思考模式，适用于 Qwen3 等模型模型。
+     */
+    private Boolean enableThinking;
+
+    /**
+     * 额外的参数，用于传递给模型。
+     */
+    private Map<String, Object> extra;
+
+    public String getModel() {
+        return model;
+    }
+
+    public void setModel(String model) {
+        this.model = model;
+    }
+
+    public String getSeed() {
+        return seed;
+    }
+
+    public void setSeed(String seed) {
+        this.seed = seed;
+    }
+
+    public Float getTemperature() {
+        return temperature;
+    }
+
+    public void setTemperature(Float temperature) {
+        this.temperature = temperature;
+    }
+
+    public Float getTopP() {
+        return topP;
+    }
+
+    public void setTopP(Float topP) {
+        this.topP = topP;
+    }
+
+    public Integer getTopK() {
+        return topK;
+    }
+
+    public void setTopK(Integer topK) {
+        this.topK = topK;
+    }
+
+    public Integer getMaxTokens() {
+        return maxTokens;
+    }
+
+    public void setMaxTokens(Integer maxTokens) {
+        this.maxTokens = maxTokens;
+    }
+
+    public List<String> getStop() {
+        return stop;
+    }
+
+    public void setStop(List<String> stop) {
+        this.stop = stop;
+    }
+
+    public Boolean getEnableThinking() {
+        return enableThinking;
+    }
+
+    public void setEnableThinking(Boolean enableThinking) {
+        this.enableThinking = enableThinking;
+    }
+
+    public Map<String, Object> getExtra() {
+        return extra;
+    }
+
+    public void setExtra(Map<String, Object> extra) {
+        this.extra = extra;
+    }
+
+    public void addExtra(String key, Object value) {
+        if (extra == null) {
+            extra = Maps.of(key, value);
+        } else {
+            extra.put(key, value);
+        }
+    }
+}