new langchain tutorial

docs/my-website/docs/langchain/langchain.md

@@ -0,0 +1,112 @@
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
+# Using ChatLiteLLM() - Langchain
+
+## Pre-Requisits
+```shell
+!pip install litellm langchain
+```
+## Quick Start
+
+<Tabs>
+<TabItem value="openai" label="OpenAI">
+
+```python
+import os
+from langchain.chat_models import ChatLiteLLM
+from langchain.prompts.chat import (
+    ChatPromptTemplate,
+    SystemMessagePromptTemplate,
+    AIMessagePromptTemplate,
+    HumanMessagePromptTemplate,
+)
+from langchain.schema import AIMessage, HumanMessage, SystemMessage
+
+os.environ['OPENAI_API_KEY'] = ""
+chat = ChatLiteLLM(model="gpt-3.5-turbo")
+messages = [
+    HumanMessage(
+        content="what model are you"
+    )
+]
+chat(messages)
+```
+
+</TabItem>
+
+<TabItem value="anthropic" label="Anthropic">
+
+```python
+import os
+from langchain.chat_models import ChatLiteLLM
+from langchain.prompts.chat import (
+    ChatPromptTemplate,
+    SystemMessagePromptTemplate,
+    AIMessagePromptTemplate,
+    HumanMessagePromptTemplate,
+)
+from langchain.schema import AIMessage, HumanMessage, SystemMessage
+
+os.environ['ANTHROPIC_API_KEY'] = ""
+chat = ChatLiteLLM(model="claude-2", temperature=0.3)
+messages = [
+    HumanMessage(
+        content="what model are you"
+    )
+]
+chat(messages)
+```
+
+</TabItem>
+
+<TabItem value="replicate" label="Replicate">
+
+```python
+import os
+from langchain.chat_models import ChatLiteLLM
+from langchain.prompts.chat import (
+    ChatPromptTemplate,
+    SystemMessagePromptTemplate,
+    AIMessagePromptTemplate,
+    HumanMessagePromptTemplate,
+)
+from langchain.schema import AIMessage, HumanMessage, SystemMessage
+
+os.environ['REPLICATE_API_TOKEN'] = ""
+chat = ChatLiteLLM(model="replicate/llama-2-70b-chat:2c1608e18606fad2812020dc541930f2d0495ce32eee50074220b87300bc16e1")
+messages = [
+    HumanMessage(
+        content="what model are you?"
+    )
+]
+chat(messages)
+```
+
+</TabItem>
+
+<TabItem value="cohere" label="Cohere">
+
+```python
+import os
+from langchain.chat_models import ChatLiteLLM
+from langchain.prompts.chat import (
+    ChatPromptTemplate,
+    SystemMessagePromptTemplate,
+    AIMessagePromptTemplate,
+    HumanMessagePromptTemplate,
+)
+from langchain.schema import AIMessage, HumanMessage, SystemMessage
+
+os.environ['COHERE_API_KEY'] = ""
+chat = ChatLiteLLM(model="command-nightly")
+messages = [
+    HumanMessage(
+        content="what model are you?"
+    )
+]
+chat(messages)
+```
+
+</TabItem>
+</Tabs>

docs/my-website/sidebars.js

@@ -125,6 +125,13 @@ const sidebars = {
         "caching/gpt_cache",
       ],
     },
+    {
+      type: "category",
+      label: "LangChain, LlamaIndex Integration",
+      items: [
+        "langchain/langchain"
+      ],
+    },
     {
       type: 'category',
       label: 'Extras',