diff --git a/src/ai_client.py b/src/ai_client.py
index 0cae954c..f1ce2b29 100644
--- a/src/ai_client.py
+++ b/src/ai_client.py
@@ -2654,15 +2654,16 @@ def _send_minimax(md_content: str, user_message: str, base_dir: str,
  from src.openai_schemas import ChatMessage
  try:
   _ensure_minimax_client()
+  history = provider_state.get_history("minimax")
   tools: list[Metadata] | None = _get_deepseek_tools() or None
-  _repair_minimax_history(_minimax_history)
-  if discussion_history and not _minimax_history:
-   _minimax_history.append({"role": "user", "content": f"[DISCUSSION HISTORY]\n\n{discussion_history}\n\n---\n\n{user_message}"})
+  _repair_minimax_history(history)
+  if discussion_history and not history:
+   history.append({"role": "user", "content": f"[DISCUSSION HISTORY]\n\n{discussion_history}\n\n---\n\n{user_message}"})
   else:
-   _minimax_history.append({"role": "user", "content": user_message})
+   history.append({"role": "user", "content": user_message})
   def _build_minimax_request(_round_idx: int) -> OpenAICompatibleRequest:
-   with _minimax_history_lock:
-    history_msgs: list[ChatMessage] = [ChatMessage(role=m["role"], content=m["content"]) for m in _minimax_history]
+   with history.lock:
+    history_msgs: list[ChatMessage] = [ChatMessage(role=m["role"], content=m["content"]) for m in history]
     messages: list[ChatMessage] = [ChatMessage(role="system", content=f"{_get_combined_system_prompt()}\n\n<context>\n{md_content}\n</context>")]
     messages.extend(history_msgs)
    return OpenAICompatibleRequest(
@@ -2681,7 +2682,7 @@ def _send_minimax(md_content: str, user_message: str, base_dir: str,
    _minimax_client, _build_minimax_request, capabilities=caps,
    pre_tool_callback=pre_tool_callback, qa_callback=qa_callback, stream_callback=stream_callback,
    patch_callback=patch_callback, base_dir=base_dir, vendor_name="minimax",
-   history_lock=_minimax_history_lock, history=_minimax_history,
+   history_lock=history.lock, history=history,
    trim_func=lambda h: _trim_minimax_history(_build_minimax_request(0).messages, h),
    reasoning_extractor=_extract_minimax_reasoning if caps.reasoning else None,
    wrap_reasoning_in_text=bool(caps.reasoning),