diff --git a/lua/avante/config.lua b/lua/avante/config.lua
index d8a31c1..99f9e6b 100644
--- a/lua/avante/config.lua
+++ b/lua/avante/config.lua
@@ -344,7 +344,7 @@ M._defaults = {
     use_cwd_as_project_root = false,
   },
   history = {
-    max_tokens = 8192,
+    max_tokens = 4096,
     storage_path = vim.fn.stdpath("state") .. "/avante",
     paste = {
       extension = "png",
diff --git a/lua/avante/sidebar.lua b/lua/avante/sidebar.lua
index 8f2a1b4..04917cd 100644
--- a/lua/avante/sidebar.lua
+++ b/lua/avante/sidebar.lua
@@ -2576,12 +2576,12 @@ function Sidebar:create_input_container(opts)
 
     if self.chat_history.memory then prompts_opts.memory = self.chat_history.memory.content end
 
-    if not summarize_memory or #history_messages < 12 then
+    if not summarize_memory or #history_messages < 8 then
       cb(prompts_opts)
       return
     end
 
-    prompts_opts.history_messages = vim.list_slice(prompts_opts.history_messages, 7)
+    prompts_opts.history_messages = vim.list_slice(prompts_opts.history_messages, 5)
 
     Llm.summarize_memory(self.code.bufnr, self.chat_history, function(memory)
       if memory then prompts_opts.memory = memory.content end