From 38cf66df012dbf225b115bc52b1d94e8b6eb901c Mon Sep 17 00:00:00 2001
From: Sameer Kankute <sameer@berri.ai>
Date: Tue, 23 Dec 2025 17:07:21 +0530
Subject: [PATCH] Add: chat completion transformation for minmax

---
 litellm/llms/minimax/chat/__init__.py       |  4 +
 litellm/llms/minimax/chat/transformation.py | 83 +++++++++++++++++++++
 2 files changed, 87 insertions(+)
 create mode 100644 litellm/llms/minimax/chat/__init__.py
 create mode 100644 litellm/llms/minimax/chat/transformation.py

diff --git a/litellm/llms/minimax/chat/__init__.py b/litellm/llms/minimax/chat/__init__.py
new file mode 100644
index 0000000000..45bcfd03b4
--- /dev/null
+++ b/litellm/llms/minimax/chat/__init__.py
@@ -0,0 +1,4 @@
+"""
+MiniMax OpenAI-compatible chat API
+"""
+
diff --git a/litellm/llms/minimax/chat/transformation.py b/litellm/llms/minimax/chat/transformation.py
new file mode 100644
index 0000000000..ed80ff8aed
--- /dev/null
+++ b/litellm/llms/minimax/chat/transformation.py
@@ -0,0 +1,83 @@
+"""
+MiniMax OpenAI transformation config - extends OpenAI chat config for MiniMax's OpenAI-compatible API
+"""
+from typing import Optional
+
+import litellm
+from litellm.llms.openai.chat.gpt_transformation import OpenAIGPTConfig
+from litellm.secret_managers.main import get_secret_str
+
+
+class MinimaxChatConfig(OpenAIGPTConfig):
+    """
+    MiniMax OpenAI configuration that extends OpenAIGPTConfig.
+    MiniMax provides an OpenAI-compatible API at:
+    - International: https://api.minimax.io/v1
+    - China: https://api.minimaxi.com/v1
+    
+    Supported models:
+    - MiniMax-M2.1
+    - MiniMax-M2.1-lightning
+    - MiniMax-M2
+    """
+
+    @staticmethod
+    def get_api_key(api_key: Optional[str] = None) -> Optional[str]:
+        """
+        Get MiniMax API key from environment or parameters.
+        """
+        return (
+            api_key
+            or get_secret_str("MINIMAX_API_KEY")
+            or litellm.api_key
+        )
+
+    @staticmethod
+    def get_api_base(
+        api_base: Optional[str] = None,
+    ) -> str:
+        """
+        Get MiniMax API base URL.
+        Defaults to international endpoint: https://api.minimax.io/v1
+        For China, set to: https://api.minimaxi.com/v1
+        """
+        return (
+            api_base
+            or get_secret_str("MINIMAX_API_BASE")
+            or "https://api.minimax.io/v1"
+        )
+
+    def get_complete_url(
+        self,
+        api_base: Optional[str],
+        api_key: Optional[str],
+        model: str,
+        optional_params: dict,
+        litellm_params: dict,
+        stream: Optional[bool] = None,
+    ) -> str:
+        """
+        Get the complete URL for MiniMax OpenAI API.
+        Override to ensure we use MiniMax's endpoint.
+        """
+        # Get the base URL (either provided or default MiniMax endpoint)
+        base_url = self.get_api_base(api_base=api_base)
+        
+        # Ensure it ends with /chat/completions
+        if base_url.endswith("/chat/completions"):
+            return base_url
+        elif base_url.endswith("/v1"):
+            return f"{base_url}/chat/completions"
+        elif base_url.endswith("/"):
+            return f"{base_url}v1/chat/completions"
+        else:
+            return f"{base_url}/v1/chat/completions"
+
+    def get_supported_openai_params(self, model: str) -> list:
+        """
+        Get supported OpenAI parameters for MiniMax.
+        Adds reasoning_split to the list of supported params.
+        """
+        base_params = super().get_supported_openai_params(model=model)
+        return base_params + ["reasoning_split"]
+