diff --git a/cli/utils.py b/cli/utils.py
index c60bb63a..1df018fc 100644
--- a/cli/utils.py
+++ b/cli/utils.py
@@ -182,26 +182,29 @@ def select_shallow_thinking_agent(provider) -> str:
     # 定義不同供應商的淺層思維 LLM 引擎選項
     SHALLOW_AGENT_OPTIONS = {
         "openai": [
-            ("GPT-4o-mini - 快速高效，適用於快速任務", "gpt-4o-mini"),
-            ("GPT-4.1-nano - 超輕量級模型，適用於基本操作", "gpt-4.1-nano"),
-            ("GPT-4.1-mini - 性能良好的緊湊型模型", "gpt-4.1-mini"),
-            ("GPT-4o - 功能齊全的標準模型", "gpt-4o"),
+            ("GPT-5.1", "gpt-5.1-2025-11-13"),
+            ("GPT-5-mini","gpt-5-mini-2025-08-07"),
+            ("GPT-5-nano","gpt-5-nano-2025-08-07"),
+            ("GPT-4.1-mini", "gpt-4.1-mini"),
+            ("GPT-4.1-nano", "gpt-4.1-nano"),
+            ("GPT-4o", "gpt-4o"),
+            ("GPT-4o-mini", "gpt-4o-mini")
         ],
         "anthropic": [
-            ("Claude Haiku 3.5 - 推理速度快，具備標準能力", "claude-3-5-haiku-latest"),
-            ("Claude Sonnet 3.5 - 功能強大的標準模型", "claude-3-5-sonnet-latest"),
-            ("Claude Sonnet 3.7 - 卓越的混合推理和代理能力", "claude-3-7-sonnet-latest"),
-            ("Claude Sonnet 4 - 高性能和出色的推理能力", "claude-sonnet-4-0"),
+            ("Claude Haiku 3.5", "claude-3-5-haiku-latest"),
+            ("Claude Sonnet 3.5", "claude-3-5-sonnet-latest"),
+            ("Claude Sonnet 3.7", "claude-3-7-sonnet-latest"),
+            ("Claude Sonnet 4", "claude-sonnet-4-0"),
         ],
         "google": [
-            ("Gemini 2.0 Flash-Lite - 成本效益高，延遲低", "gemini-2.0-flash-lite"),
-            ("Gemini 2.0 Flash - 新一代功能、速度和思維", "gemini-2.0-flash"),
-            ("Gemini 2.5 Flash - 適應性思維，成本效益高", "gemini-2.5-flash-preview-05-20"),
+            ("Gemini 2.0 Flash-Lite", "gemini-2.0-flash-lite"),
+            ("Gemini 2.0 Flash", "gemini-2.0-flash"),
+            ("Gemini 2.5 Flash", "gemini-2.5-flash-preview-05-20"),
         ],
         "openrouter": [
             ("Meta: Llama 4 Scout", "meta-llama/llama-4-scout:free"),
-            ("Meta: Llama 3.3 8B Instruct - Llama 3.3 70B 的輕量級超快版本", "meta-llama/llama-3.3-8b-instruct:free"),
-            ("google/gemini-2.0-flash-exp:free - Gemini Flash 2.0 提供更快的首個 token 生成時間", "google/gemini-2.0-flash-exp:free"),
+            ("Meta: Llama 3.3 8B Instruct - Llama 3.3 70B", "meta-llama/llama-3.3-8b-instruct:free"),
+            ("google/gemini-2.0-flash-exp:free - Gemini Flash 2.0", "google/gemini-2.0-flash-exp:free"),
         ],
         "ollama": [
             ("llama3.1 本機版", "llama3.1"),
@@ -253,25 +256,25 @@ def select_deep_thinking_agent(provider) -> str:
     # 定義不同供應商的深層思維 LLM 引擎選項
     DEEP_AGENT_OPTIONS = {
         "openai": [
-            ("GPT-4.1-nano - 超輕量級模型，適用於基本操作", "gpt-4.1-nano"),
-            ("GPT-4.1-mini - 性能良好的緊湊型模型", "gpt-4.1-mini"),
-            ("GPT-4o - 功能齊全的標準模型", "gpt-4o"),
-            ("o4-mini - 專業推理模型 (緊湊型)", "o4-mini"),
-            ("o3-mini - 進階推理模型 (輕量級)", "o3-mini"),
-            ("o3 - 完整進階推理模型", "o3"),
-            ("o1 - 頂級推理和問題解決模型", "o1"),
+            ("GPT-5.1", "gpt-5.1-2025-11-13"),
+            ("GPT-5-mini","gpt-5-mini-2025-08-07"),
+            ("GPT-5-nano","gpt-5-nano-2025-08-07"),
+            ("GPT-4.1-mini", "gpt-4.1-mini"),
+            ("GPT-4.1-nano", "gpt-4.1-nano"),
+            ("GPT-4o", "gpt-4o"),
+            ("GPT-4o-mini", "gpt-4o-mini")
         ],
         "anthropic": [
-            ("Claude Haiku 3.5 - 推理速度快，具備標準能力", "claude-3-5-haiku-latest"),
-            ("Claude Sonnet 3.5 - 功能強大的標準模型", "claude-3-5-sonnet-latest"),
-            ("Claude Sonnet 3.7 - 卓越的混合推理和代理能力", "claude-3-7-sonnet-latest"),
-            ("Claude Sonnet 4 - 高性能和出色的推理能力", "claude-sonnet-4-0"),
-            ("Claude Opus 4 - Anthropic 最強大的模型", "	claude-opus-4-0"),
+            ("Claude Haiku 3.5", "claude-3-5-haiku-latest"),
+            ("Claude Sonnet 3.5", "claude-3-5-sonnet-latest"),
+            ("Claude Sonnet 3.7", "claude-3-7-sonnet-latest"),
+            ("Claude Sonnet 4", "claude-sonnet-4-0"),
+            ("Claude Opus 4", "claude-opus-4-0"),
         ],
         "google": [
-            ("Gemini 2.0 Flash-Lite - 成本效益高，延遲低", "gemini-2.0-flash-lite"),
-            ("Gemini 2.0 Flash - 新一代功能、速度和思維", "gemini-2.0-flash"),
-            ("Gemini 2.5 Flash - 適應性思維，成本效益高", "gemini-2.5-flash-preview-05-20"),
+            ("Gemini 2.0 Flash-Lite", "gemini-2.0-flash-lite"),
+            ("Gemini 2.0 Flash", "gemini-2.0-flash"),
+            ("Gemini 2.5 Flash", "gemini-2.5-flash-preview-05-20"),
             ("Gemini 2.5 Pro", "gemini-2.5-pro-preview-06-05"),
         ],
         "openrouter": [
diff --git a/tradingagents/agents/managers/research_manager.py b/tradingagents/agents/managers/research_manager.py
index 0515cd5c..ce2bfa2f 100644
--- a/tradingagents/agents/managers/research_manager.py
+++ b/tradingagents/agents/managers/research_manager.py
@@ -39,16 +39,40 @@ def create_research_manager(llm, memory):
         news_report = state["news_report"]
         fundamentals_report = state["fundamentals_report"]
 
+        # 定義文本截斷函數以避免超過 token 限制
+        def truncate_text(text, max_chars):
+            """截斷文本到指定字符數"""
+            if len(text) <= max_chars:
+                return text
+            return text[:max_chars] + "\n...(內容已截斷)"
+        
+        # 為每個報告設置合理的字符限制
+        # 模型 gpt-4o-mini 的限制是 8192 tokens
+        # 混合中英文估算: 1 字符 ≈ 1.5-2 tokens (取保守值)
+        # 目標: 總字符數 < 3500 字符 (約 5250-7000 tokens，留足夠 tokens 給 completion)
+        market_research_report = truncate_text(market_research_report, 500)
+        sentiment_report = truncate_text(sentiment_report, 500)
+        news_report = truncate_text(news_report, 600)
+        fundamentals_report = truncate_text(fundamentals_report, 600)
+        
         # 整合當前情況
         curr_situation = f"{market_research_report}\n\n{sentiment_report}\n\n{news_report}\n\n{fundamentals_report}"
         
         # 從記憶體中獲取過去相似情況的經驗
         past_memories = memory.get_memories(curr_situation, n_matches=2)
 
-        # 將過去的經驗格式化為字串
+        # 將過去的經驗格式化為字串（限制長度）
         past_memory_str = ""
         for i, rec in enumerate(past_memories, 1):
-            past_memory_str += rec["recommendation"] + "\n\n"
+            recommendation = rec["recommendation"]
+            # 限制每條記憶的長度
+            if len(recommendation) > 200:
+                recommendation = recommendation[:200] + "...(已截斷)"
+            past_memory_str += recommendation + "\n\n"
+        
+        # 截斷辯論歷史 - 這是最容易超過限制的部分
+        # 限制辯論歷史在 1200 字符以內
+        history = truncate_text(history, 1200)
 
         # 建立提示 (prompt)
         prompt = f"""作為投資組合經理和辯論主持人，您的角色是批判性地評估這一輪辯論，並做出明確的決定：與看跌分析師保持一致、與看漲分析師保持一致，或者僅在有充分理由支持的情況下選擇持有。
diff --git a/tradingagents/agents/managers/risk_manager.py b/tradingagents/agents/managers/risk_manager.py
index d2185e7c..97189860 100644
--- a/tradingagents/agents/managers/risk_manager.py
+++ b/tradingagents/agents/managers/risk_manager.py
@@ -41,16 +41,41 @@ def create_risk_manager(llm, memory):
         sentiment_report = state["sentiment_report"]
         trader_plan = state["investment_plan"]
 
+        # 定義文本截斷函數以避免超過 token 限制
+        def truncate_text(text, max_chars):
+            """截斷文本到指定字符數"""
+            if len(text) <= max_chars:
+                return text
+            return text[:max_chars] + "\n...(內容已截斷)"
+        
+        # 為每個報告設置合理的字符限制
+        # 模型 gpt-4o-mini 的限制是 8192 tokens
+        # 混合中英文估算: 1 字符 ≈ 1.5-2 tokens (取保守值)
+        # 目標: 總字符數 < 3500 字符 (約 5250-7000 tokens，留足夠 tokens 給 completion)
+        market_research_report = truncate_text(market_research_report, 500)
+        sentiment_report = truncate_text(sentiment_report, 500)
+        news_report = truncate_text(news_report, 600)
+        fundamentals_report = truncate_text(fundamentals_report, 600)
+        trader_plan = truncate_text(trader_plan, 800)
+        
         # 整合當前情況
         curr_situation = f"{market_research_report}\n\n{sentiment_report}\n\n{news_report}\n\n{fundamentals_report}"
         
         # 從記憶體中獲取過去相似情況的經驗
         past_memories = memory.get_memories(curr_situation, n_matches=2)
 
-        # 將過去的經驗格式化為字串
+        # 將過去的經驗格式化為字串（限制長度）
         past_memory_str = ""
         for i, rec in enumerate(past_memories, 1):
-            past_memory_str += rec["recommendation"] + "\n\n"
+            recommendation = rec["recommendation"]
+            # 限制每條記憶的長度
+            if len(recommendation) > 200:
+                recommendation = recommendation[:200] + "...(已截斷)"
+            past_memory_str += recommendation + "\n\n"
+        
+        # 截斷辯論歷史 - 這是最容易超過限制的部分
+        # 限制辯論歷史在 1000 字符以內（風險辯論通常有3方，比投資辯論更長）
+        history = truncate_text(history, 1000)
 
         # 建立提示 (prompt)
         prompt = f"""作為風險管理裁判和辯論主持人，您的目標是評估三位風險分析師——激進、中立和安全/保守——之間的辯論，並為交易員確定最佳行動方案。您的決策必須產生一個明確的建議：買入、賣出或持有。僅在有特定論點強烈支持時才選擇持有，而不是在各方看起來都合理時作為後備選項。力求清晰和果斷。
diff --git a/tradingagents/agents/risk_mgmt/aggresive_debator.py b/tradingagents/agents/risk_mgmt/aggresive_debator.py
index 64d6ab27..8bad0038 100644
--- a/tradingagents/agents/risk_mgmt/aggresive_debator.py
+++ b/tradingagents/agents/risk_mgmt/aggresive_debator.py
@@ -46,6 +46,24 @@ def create_risky_debator(llm):
         # 獲取交易員的決策
         trader_decision = state["trader_investment_plan"]
 
+        # 定義文本截斷函數以避免超過 token 限制
+        def truncate_text(text, max_chars):
+            """截斷文本到指定字符數"""
+            if len(text) <= max_chars:
+                return text
+            return text[:max_chars] + "\n...(內容已截斷)"
+        
+        # 截斷各類輸入以控制 token 使用量
+        # 模型限制: 8192 tokens，目標: < 3500 字符
+        market_research_report = truncate_text(market_research_report, 500)
+        sentiment_report = truncate_text(sentiment_report, 500)
+        news_report = truncate_text(news_report, 600)
+        fundamentals_report = truncate_text(fundamentals_report, 600)
+        trader_decision = truncate_text(trader_decision, 800)
+        history = truncate_text(history, 400)
+        current_safe_response = truncate_text(current_safe_response, 300)
+        current_neutral_response = truncate_text(current_neutral_response, 300)
+
         # 建立提示 (prompt)
         prompt = f"""作為激進風險分析師，您的角色是積極倡導高回報、高風險的機會，強調大膽的策略和競爭優勢。在評估交易員的決策或計畫時，請專注於潛在的上升空間、增長潛力和創新效益——即使這些都伴隨著較高的風險。利用所提供的市場數據和情緒分析來加強您的論點，並挑戰反對意見。具體來說，請直接回應保守和中立分析師提出的每點，用數據驅動的反駁和有說服力的推理進行反擊。強調他們的謹慎可能錯失關鍵機會，或者他們的假設可能過於保守。這是交易員的決策：
 
diff --git a/tradingagents/agents/risk_mgmt/conservative_debator.py b/tradingagents/agents/risk_mgmt/conservative_debator.py
index 88fc19e7..a03e1c75 100644
--- a/tradingagents/agents/risk_mgmt/conservative_debator.py
+++ b/tradingagents/agents/risk_mgmt/conservative_debator.py
@@ -47,6 +47,24 @@ def create_safe_debator(llm):
         # 獲取交易員的決策
         trader_decision = state["trader_investment_plan"]
 
+        # 定義文本截斷函數以避免超過 token 限制
+        def truncate_text(text, max_chars):
+            """截斷文本到指定字符數"""
+            if len(text) <= max_chars:
+                return text
+            return text[:max_chars] + "\n...(內容已截斷)"
+        
+        # 截斷各類輸入以控制 token 使用量
+        # 模型限制: 8192 tokens，目標: < 3500 字符
+        market_research_report = truncate_text(market_research_report, 500)
+        sentiment_report = truncate_text(sentiment_report, 500)
+        news_report = truncate_text(news_report, 600)
+        fundamentals_report = truncate_text(fundamentals_report, 600)
+        trader_decision = truncate_text(trader_decision, 800)
+        history = truncate_text(history, 400)
+        current_risky_response = truncate_text(current_risky_response, 300)
+        current_neutral_response = truncate_text(current_neutral_response, 300)
+
         # 建立提示 (prompt)
         prompt = f"""作為安全/保守風險分析師，您的主要目標是保護資產、最小化波動性並確保穩定可靠的增長。您優先考慮穩定性、安全性和風險緩解，仔細評估潛在損失、經濟衰退和市場波動。在評估交易員的決策或計畫時，請批判性地審查高風險元素，指出決策可能使公司面臨過度風險的地方，以及更謹慎的替代方案可以在何處確保長期收益。這是交易員的決策：
 
diff --git a/tradingagents/agents/risk_mgmt/neutral_debator.py b/tradingagents/agents/risk_mgmt/neutral_debator.py
index 233404a8..a13eaa8b 100644
--- a/tradingagents/agents/risk_mgmt/neutral_debator.py
+++ b/tradingagents/agents/risk_mgmt/neutral_debator.py
@@ -46,6 +46,24 @@ def create_neutral_debator(llm):
         # 獲取交易員的決策
         trader_decision = state["trader_investment_plan"]
 
+        # 定義文本截斷函數以避免超過 token 限制
+        def truncate_text(text, max_chars):
+            """截斷文本到指定字符數"""
+            if len(text) <= max_chars:
+                return text
+            return text[:max_chars] + "\n...(內容已截斷)"
+        
+        # 截斷各類輸入以控制 token 使用量
+        # 模型限制: 8192 tokens，目標: < 3500 字符
+        market_research_report = truncate_text(market_research_report, 500)
+        sentiment_report = truncate_text(sentiment_report, 500)
+        news_report = truncate_text(news_report, 600)
+        fundamentals_report = truncate_text(fundamentals_report, 600)
+        trader_decision = truncate_text(trader_decision, 800)
+        history = truncate_text(history, 400)
+        current_risky_response = truncate_text(current_risky_response, 300)
+        current_safe_response = truncate_text(current_safe_response, 300)
+
         # 建立提示 (prompt)
         prompt = f"""作為中立風險分析師，您的角色是提供一個平衡的視角，權衡交易員決策或計畫的潛在利益和風險。您優先考慮一個全面的方法，評估其優缺點，同時考慮更廣泛的市場趨勢、潛在的經濟轉變和多元化策略。這是交易員的決策：
 
diff --git a/tradingagents/agents/trader/trader.py b/tradingagents/agents/trader/trader.py
index 032b5606..52590ad8 100644
--- a/tradingagents/agents/trader/trader.py
+++ b/tradingagents/agents/trader/trader.py
@@ -39,24 +39,43 @@ def create_trader(llm, memory):
         news_report = state["news_report"]
         fundamentals_report = state["fundamentals_report"]
 
-        # 整合當前情況
-        curr_situation = f"{market_research_report}\n\n{sentiment_report}\n\n{news_report}\n\n{fundamentals_report}"
+        # 定義文本截斷函數以避免超過 token 限制
+        def truncate_text(text, max_chars):
+            """截斷文本到指定字符數"""
+            if len(text) <= max_chars:
+                return text
+            return text[:max_chars] + "\n...(內容已截斷)"
+        
+        # 截斷各類報告以控制 token 使用量
+        # 這些報告將用於記憶檢索（embedding）和 LLM prompt
+        market_research_report_truncated = truncate_text(market_research_report, 500)
+        sentiment_report_truncated = truncate_text(sentiment_report, 500)
+        news_report_truncated = truncate_text(news_report, 600)
+        fundamentals_report_truncated = truncate_text(fundamentals_report, 600)
+        investment_plan_truncated = truncate_text(investment_plan, 800)
+
+        # 整合當前情況（用於記憶檢索）
+        curr_situation = f"{market_research_report_truncated}\n\n{sentiment_report_truncated}\n\n{news_report_truncated}\n\n{fundamentals_report_truncated}"
         
         # 從記憶體中獲取過去相似情況的經驗
         past_memories = memory.get_memories(curr_situation, n_matches=2)
 
-        # 將過去的經驗格式化為字串
+        # 將過去的經驗格式化為字串（限制長度）
         past_memory_str = ""
         if past_memories:
             for i, rec in enumerate(past_memories, 1):
-                past_memory_str += rec["recommendation"] + "\n\n"
+                recommendation = rec["recommendation"]
+                # 限制每條記憶的長度
+                if len(recommendation) > 200:
+                    recommendation = recommendation[:200] + "...(已截斷)"
+                past_memory_str += recommendation + "\n\n"
         else:
             past_memory_str = "找不到過去的記憶。"
 
         # 建立上下文，包含給交易員的指示和投資計畫
         context = {
             "role": "user",
-            "content": f"根據分析師團隊的綜合分析，這是一份為 {company_name} 量身定制的投資計畫。該計畫結合了當前技術市場趨勢、宏觀經濟指標和社群媒體情緒的見解。請以此計畫為基礎，評估您的下一個交易決策。\n\n建議的投資計畫：{investment_plan}\n\n利用這些見解，做出明智且具策略性的決策。",
+            "content": f"根據分析師團隊的綜合分析，這是一份為 {company_name} 量身定制的投資計畫。該計畫結合了當前技術市場趨勢、宏觀經濟指標和社群媒體情緒的見解。請以此計畫為基礎，評估您的下一個交易決策。\n\n建議的投資計畫：{investment_plan_truncated}\n\n利用這些見解，做出明智且具策略性的決策。",
         }
 
         # 建立傳送給 LLM 的訊息列表
diff --git a/tradingagents/agents/utils/memory.py b/tradingagents/agents/utils/memory.py
index 092fb44b..9d4ae791 100644
--- a/tradingagents/agents/utils/memory.py
+++ b/tradingagents/agents/utils/memory.py
@@ -18,6 +18,13 @@ class FinancialSituationMemory:
 
     def get_embedding(self, text):
         """Get OpenAI embedding for a text"""
+        # Truncate text to avoid exceeding embedding model's token limit
+        # text-embedding-3-small has 8192 token limit
+        # For mixed Chinese/English text, estimate ~1.5-2 tokens per character
+        # Target: ~4000 characters to stay well under 8192 tokens
+        max_chars = 4000
+        if len(text) > max_chars:
+            text = text[:max_chars]
         
         response = self.client.embeddings.create(
             model=self.embedding, input=text
diff --git a/tradingagents/dataflows/alpha_vantage_fundamentals.py b/tradingagents/dataflows/alpha_vantage_fundamentals.py
index ef67abe6..36f1c961 100644
--- a/tradingagents/dataflows/alpha_vantage_fundamentals.py
+++ b/tradingagents/dataflows/alpha_vantage_fundamentals.py
@@ -1,4 +1,5 @@
 from .alpha_vantage_common import _make_api_request
+import json
 
 
 def get_fundamentals(ticker: str, curr_date: str = None) -> str:
@@ -16,7 +17,59 @@ def get_fundamentals(ticker: str, curr_date: str = None) -> str:
         "symbol": ticker,
     }
 
-    return _make_api_request("OVERVIEW", params)
+    response = _make_api_request("OVERVIEW", params)
+    
+    # 總結基本面數據以減少 token 使用量
+    try:
+        data = json.loads(response) if isinstance(response, str) else response
+        
+        if isinstance(data, dict) and "Symbol" in data:
+            # 只保留關鍵的基本面指標
+            summarized_data = {
+                # 基本資訊
+                "Symbol": data.get("Symbol", ""),
+                "Name": data.get("Name", ""),
+                "Description": data.get("Description", "")[:300] if data.get("Description") else "",  # 限制描述長度
+                "Sector": data.get("Sector", ""),
+                "Industry": data.get("Industry", ""),
+                "MarketCapitalization": data.get("MarketCapitalization", ""),
+                
+                # 關鍵財務指標
+                "EBITDA": data.get("EBITDA", ""),
+                "PERatio": data.get("PERatio", ""),
+                "PEGRatio": data.get("PEGRatio", ""),
+                "BookValue": data.get("BookValue", ""),
+                "DividendPerShare": data.get("DividendPerShare", ""),
+                "DividendYield": data.get("DividendYield", ""),
+                "EPS": data.get("EPS", ""),
+                "RevenuePerShareTTM": data.get("RevenuePerShareTTM", ""),
+                "ProfitMargin": data.get("ProfitMargin", ""),
+                "OperatingMarginTTM": data.get("OperatingMarginTTM", ""),
+                "ReturnOnAssetsTTM": data.get("ReturnOnAssetsTTM", ""),
+                "ReturnOnEquityTTM": data.get("ReturnOnEquityTTM", ""),
+                "RevenueTTM": data.get("RevenueTTM", ""),
+                "GrossProfitTTM": data.get("GrossProfitTTM", ""),
+                
+                # 交易指標
+                "52WeekHigh": data.get("52WeekHigh", ""),
+                "52WeekLow": data.get("52WeekLow", ""),
+                "50DayMovingAverage": data.get("50DayMovingAverage", ""),
+                "200DayMovingAverage": data.get("200DayMovingAverage", ""),
+                
+                # 財務健康指標
+                "QuarterlyEarningsGrowthYOY": data.get("QuarterlyEarningsGrowthYOY", ""),
+                "QuarterlyRevenueGrowthYOY": data.get("QuarterlyRevenueGrowthYOY", ""),
+                "AnalystTargetPrice": data.get("AnalystTargetPrice", ""),
+                "Beta": data.get("Beta", ""),
+            }
+            
+            return json.dumps(summarized_data, ensure_ascii=False, indent=2)
+        
+        return response
+        
+    except (json.JSONDecodeError, Exception) as e:
+        print(f"警告：無法總結基本面數據：{e}")
+        return response
 
 
 def get_balance_sheet(ticker: str, freq: str = "quarterly", curr_date: str = None) -> str:
@@ -35,7 +88,26 @@ def get_balance_sheet(ticker: str, freq: str = "quarterly", curr_date: str = Non
         "symbol": ticker,
     }
 
-    return _make_api_request("BALANCE_SHEET", params)
+    response = _make_api_request("BALANCE_SHEET", params)
+    
+    # 限制返回的報告數量以減少 token 使用量
+    try:
+        data = json.loads(response) if isinstance(response, str) else response
+        
+        if isinstance(data, dict):
+            # 只保留最近的 2 份報告（而不是全部歷史）
+            if "quarterlyReports" in data and isinstance(data["quarterlyReports"], list):
+                data["quarterlyReports"] = data["quarterlyReports"][:2]
+            if "annualReports" in data and isinstance(data["annualReports"], list):
+                data["annualReports"] = data["annualReports"][:2]
+            
+            return json.dumps(data, ensure_ascii=False, indent=2)
+        
+        return response
+        
+    except (json.JSONDecodeError, Exception) as e:
+        print(f"警告：無法處理資產負債表數據：{e}")
+        return response
 
 
 def get_cashflow(ticker: str, freq: str = "quarterly", curr_date: str = None) -> str:
@@ -54,7 +126,26 @@ def get_cashflow(ticker: str, freq: str = "quarterly", curr_date: str = None) ->
         "symbol": ticker,
     }
 
-    return _make_api_request("CASH_FLOW", params)
+    response = _make_api_request("CASH_FLOW", params)
+    
+    # 限制返回的報告數量以減少 token 使用量
+    try:
+        data = json.loads(response) if isinstance(response, str) else response
+        
+        if isinstance(data, dict):
+            # 只保留最近的 2 份報告（而不是全部歷史）
+            if "quarterlyReports" in data and isinstance(data["quarterlyReports"], list):
+                data["quarterlyReports"] = data["quarterlyReports"][:2]
+            if "annualReports" in data and isinstance(data["annualReports"], list):
+                data["annualReports"] = data["annualReports"][:2]
+            
+            return json.dumps(data, ensure_ascii=False, indent=2)
+        
+        return response
+        
+    except (json.JSONDecodeError, Exception) as e:
+        print(f"警告：無法處理現金流量表數據：{e}")
+        return response
 
 
 def get_income_statement(ticker: str, freq: str = "quarterly", curr_date: str = None) -> str:
@@ -73,4 +164,23 @@ def get_income_statement(ticker: str, freq: str = "quarterly", curr_date: str =
         "symbol": ticker,
     }
 
-    return _make_api_request("INCOME_STATEMENT", params)
\ No newline at end of file
+    response = _make_api_request("INCOME_STATEMENT", params)
+    
+    # 限制返回的報告數量以減少 token 使用量
+    try:
+        data = json.loads(response) if isinstance(response, str) else response
+        
+        if isinstance(data, dict):
+            # 只保留最近的 2 份報告（而不是全部歷史）
+            if "quarterlyReports" in data and isinstance(data["quarterlyReports"], list):
+                data["quarterlyReports"] = data["quarterlyReports"][:2]
+            if "annualReports" in data and isinstance(data["annualReports"], list):
+                data["annualReports"] = data["annualReports"][:2]
+            
+            return json.dumps(data, ensure_ascii=False, indent=2)
+        
+        return response
+        
+    except (json.JSONDecodeError, Exception) as e:
+        print(f"警告：無法處理損益表數據：{e}")
+        return response
\ No newline at end of file
diff --git a/tradingagents/dataflows/alpha_vantage_news.py b/tradingagents/dataflows/alpha_vantage_news.py
index 1b69a10c..f1d9bb1e 100644
--- a/tradingagents/dataflows/alpha_vantage_news.py
+++ b/tradingagents/dataflows/alpha_vantage_news.py
@@ -1,4 +1,5 @@
 from .alpha_vantage_common import _make_api_request, format_datetime_for_api
+import json
 
 def get_news(ticker, start_date, end_date) -> dict[str, str] | str:
     """
@@ -20,10 +21,64 @@ def get_news(ticker, start_date, end_date) -> dict[str, str] | str:
         "time_from": format_datetime_for_api(start_date),
         "time_to": format_datetime_for_api(end_date),
         "sort": "LATEST",
-        "limit": "50",
+        "limit": "10",  # 降低限制從 50 到 10 以避免超過 token 限制
     }
     
-    return _make_api_request("NEWS_SENTIMENT", params)
+    response = _make_api_request("NEWS_SENTIMENT", params)
+    
+    # 處理並總結回應以減少 token 使用量
+    try:
+        data = json.loads(response) if isinstance(response, str) else response
+        
+        # 如果回應包含新聞項目，提取關鍵資訊
+        if isinstance(data, dict) and "feed" in data:
+            summarized_feed = []
+            for item in data.get("feed", []):
+                # 只保留必要的欄位以減少大小
+                summarized_item = {
+                    "title": item.get("title", ""),
+                    "url": item.get("url", ""),
+                    "time_published": item.get("time_published", ""),
+                    "summary": item.get("summary", "")[:200] if item.get("summary") else "",  # 限制摘要長度
+                    "source": item.get("source", ""),
+                    "overall_sentiment_score": item.get("overall_sentiment_score", 0),
+                    "overall_sentiment_label": item.get("overall_sentiment_label", ""),
+                }
+                
+                # 為此新聞項目添加相關的股票代碼情緒
+                if "ticker_sentiment" in item:
+                    ticker_sentiments = [
+                        {
+                            "ticker": ts.get("ticker", ""),
+                            "relevance_score": ts.get("relevance_score", ""),
+                            "ticker_sentiment_score": ts.get("ticker_sentiment_score", ""),
+                            "ticker_sentiment_label": ts.get("ticker_sentiment_label", "")
+                        }
+                        for ts in item.get("ticker_sentiment", [])
+                        if ts.get("ticker") == ticker  # 只包含相關的股票代碼
+                    ]
+                    if ticker_sentiments:
+                        summarized_item["ticker_sentiment"] = ticker_sentiments
+                
+                summarized_feed.append(summarized_item)
+            
+            # 建立總結的回應
+            summarized_data = {
+                "items": data.get("items", "0"),
+                "sentiment_score_definition": data.get("sentiment_score_definition", ""),
+                "relevance_score_definition": data.get("relevance_score_definition", ""),
+                "feed": summarized_feed
+            }
+            
+            return json.dumps(summarized_data, ensure_ascii=False, indent=2)
+        
+        # 如果格式不如預期，返回原始回應
+        return response
+        
+    except (json.JSONDecodeError, Exception) as e:
+        # 如果處理失敗，返回原始回應
+        print(f"警告：無法總結新聞數據：{e}")
+        return response
 
 def get_insider_transactions(symbol: str) -> dict[str, str] | str:
     """
@@ -42,4 +97,21 @@ def get_insider_transactions(symbol: str) -> dict[str, str] | str:
         "symbol": symbol,
     }
 
-    return _make_api_request("INSIDER_TRANSACTIONS", params)
+    response = _make_api_request("INSIDER_TRANSACTIONS", params)
+    
+    # 限制返回的交易數量以減少 token 使用量
+    try:
+        data = json.loads(response) if isinstance(response, str) else response
+        
+        if isinstance(data, dict) and "data" in data:
+            # 只保留最近的 15 筆交易（而不是全部）
+            if isinstance(data["data"], list):
+                data["data"] = data["data"][:15]
+            
+            return json.dumps(data, ensure_ascii=False, indent=2)
+        
+        return response
+        
+    except (json.JSONDecodeError, Exception) as e:
+        print(f"警告：無法處理內部交易數據：{e}")
+        return response
diff --git a/tradingagents/dataflows/local.py b/tradingagents/dataflows/local.py
index a188e90a..0591881a 100644
--- a/tradingagents/dataflows/local.py
+++ b/tradingagents/dataflows/local.py
@@ -127,14 +127,31 @@ def get_finnhub_news(
         return ""
 
     combined_result = ""
+    total_articles = 0
+    max_articles = 15  # 限制總文章數量
+    
     for day, data in result.items():
         if len(data) == 0:
             continue
         for entry in data:
+            if total_articles >= max_articles:
+                break
+                
+            headline = entry.get("headline", "")
+            summary = entry.get("summary", "")
+            
+            # 限制摘要長度
+            if summary and len(summary) > 300:
+                summary = summary[:300] + "..."
+            
             current_news = (
-                "### " + entry["headline"] + f" ({day})" + "\n" + entry["summary"]
+                "### " + headline + f" ({day})" + "\n" + summary
             )
             combined_result += current_news + "\n\n"
+            total_articles += 1
+        
+        if total_articles >= max_articles:
+            break
 
     return f"## {query} 新聞，從 {start_date} 到 {end_date}：\n" + str(combined_result)
 
@@ -468,12 +485,15 @@ def get_reddit_company_news(
         total=total_iterations,
     )
 
+    # 限制每天的文章數量以避免 token 過多
+    max_per_day = 5  # 從 10 降低到 5
+
     while curr_date <= end_date_dt:
         curr_date_str = curr_date.strftime("%Y-%m-%d")
         fetch_result = fetch_top_from_category(
             "company_news",
             curr_date_str,
-            10,  # 每天最大限制
+            max_per_day,
             query,
             data_path=os.path.join(DATA_DIR, "reddit_data"),
         )
@@ -487,11 +507,22 @@ def get_reddit_company_news(
     if len(posts) == 0:
         return ""
 
+    # 限制總文章數量和內容長度
+    max_total_posts = 20  # 最多 20 篇文章
+    posts = posts[:max_total_posts]
+    
     news_str = ""
     for post in posts:
-        if post["content"] == "":
-            news_str += f"### {post['title']}\n\n"
+        title = post['title']
+        content = post['content']
+        
+        # 限制每篇文章的內容長度
+        if content and len(content) > 300:
+            content = content[:300] + "..."
+        
+        if content == "":
+            news_str += f"### {title}\n\n"
         else:
-            news_str += f"### {post['title']}\n\n{post['content']}\n\n"
+            news_str += f"### {title}\n\n{content}\n\n"
 
     return f"##{query} 新聞 Reddit，從 {start_date} 到 {end_date}：\n\n{news_str}"