Updated provider page by adding LLM and ChatLLM references; removed a
content that is duplicate text from the LLM referenced page.
Updated the collback page
">[PromptLayer](https://docs.promptlayer.com/introduction) is a platform for prompt engineering. It also helps with the LLM observability to visualize requests, version prompts, and track usage.\n",
">\n",
">While `PromptLayer` does have LLMs that integrate directly with LangChain (e.g. [`PromptLayerOpenAI`](https://python.langchain.com/docs/integrations/llms/promptlayer_openai)), using a callback is the recommended way to integrate `PromptLayer` with LangChain.\n",
"\n",
">[PromptLayer](https://promptlayer.com) is a an LLM observability platform that lets you visualize requests, version prompts, and track usage. In this guide we will go over how to setup the `PromptLayerCallbackHandler`. \n",
"In this guide, we will go over how to setup the `PromptLayerCallbackHandler`. \n",
"\n",
"While `PromptLayer` does have LLMs that integrate directly with LangChain (e.g. [`PromptLayerOpenAI`](https://python.langchain.com/docs/integrations/llms/promptlayer_openai)), this callback is the recommended way to integrate PromptLayer with LangChain.\n",
"\n",
"See [our docs](https://docs.promptlayer.com/languages/langchain) for more information."
"See [PromptLayer docs](https://docs.promptlayer.com/languages/langchain) for more information."
You can use the PromptLayer request ID to add a prompt, score, or other metadata to your request. [Read more about it here](https://magniv.notion.site/Track-4deee1b1f7a34c1680d085f82567dab9).
This LLM is identical to the [OpenAI](/docs/ecosystem/integrations/openai) LLM, except that
- all your requests will be logged to your PromptLayer account
- you can add `pl_tags` when instantiating to tag your requests on PromptLayer
- you can add `return_pl_id` when instantiating to return a PromptLayer request id to use [while tracking requests](https://magniv.notion.site/Track-4deee1b1f7a34c1680d085f82567dab9).
## Chat Models
See a [usage example](/docs/integrations/chat/promptlayer_chatopenai).
```python
from langchain.chat_models import PromptLayerChatOpenAI
```
PromptLayer also provides native wrappers for [`PromptLayerChatOpenAI`](/docs/integrations/chat/promptlayer_chatopenai) and `PromptLayerOpenAIChat`