Add Litellm support (#1493)

docs/llms.mdx

@@ -11,6 +11,7 @@ Mem0 includes built-in support for various popular large language models. Memory
   <Card title="Groq" href="#groq"></Card>
   <Card title="Together" href="#together"></Card>
   <Card title="AWS Bedrock" href="#aws_bedrock"></Card>
+  <Card title="Litellm" href="#litellm"></Card>
 </CardGroup>
 
 ## OpenAI
@@ -123,3 +124,27 @@ config = {
 m = Memory.from_config(config)
 m.add("Likes to play cricket on weekends", user_id="alice", metadata={"category": "hobbies"})
 ```
+
+## Litellm
+
+[Litellm](https://litellm.vercel.app/docs/) is compatible with over 100 large language models (LLMs), all using a standardized input/output format. You can explore the [available models]((https://litellm.vercel.app/docs/providers)) to use with Litellm. Ensure you set the `API_KEY` for the model you choose to use.
+
+```python
+import os
+from mem0 import Memory
+
+config = {
+    "llm": {
+        "provider": "litellm",
+        "config": {
+            "model": "gpt-3.5-turbo",
+            "temperature": 0.2,
+            "max_tokens": 1500,
+        }
+    }
+}
+
+m = Memory.from_config(config)
+m.add("Likes to play cricket on weekends", user_id="alice", metadata={"category": "hobbies"})
+```
+