This module has been deprecated and is no longer supported. The documentation below will not work in versions 0.2.0 or later.
LangChain integrates with PromptLayer for logging and debugging prompts and responses. To add support for PromptLayer:
  1. Create a PromptLayer account here: https://promptlayer.com.
  2. Create an API token and pass it either as promptLayerApiKey argument in the PromptLayerOpenAI constructor or in the PROMPTLAYER_API_KEY environment variable.
import { PromptLayerOpenAI } from "langchain/llms/openai";

const model = new PromptLayerOpenAI({
  temperature: 0.9,
  apiKey: "YOUR-API-KEY", // In Node.js defaults to process.env.OPENAI_API_KEY
  promptLayerApiKey: "YOUR-API-KEY", // In Node.js defaults to process.env.PROMPTLAYER_API_KEY
});
const res = await model.invoke(
  "What would be a good company name a company that makes colorful socks?"
);

​
Azure PromptLayerOpenAI

LangChain also integrates with PromptLayer for Azure-hosted OpenAI instances: 
import { PromptLayerOpenAI } from "langchain/llms/openai";

const model = new PromptLayerOpenAI({
  temperature: 0.9,
  azureOpenAIApiKey: "YOUR-AOAI-API-KEY", // In Node.js defaults to process.env.AZURE_OPENAI_API_KEY
  azureOpenAIApiInstanceName: "YOUR-AOAI-INSTANCE-NAME", // In Node.js defaults to process.env.AZURE_OPENAI_API_INSTANCE_NAME
  azureOpenAIApiDeploymentName: "YOUR-AOAI-DEPLOYMENT-NAME", // In Node.js defaults to process.env.AZURE_OPENAI_API_DEPLOYMENT_NAME
  azureOpenAIApiCompletionsDeploymentName:
    "YOUR-AOAI-COMPLETIONS-DEPLOYMENT-NAME", // In Node.js defaults to process.env.AZURE_OPENAI_API_COMPLETIONS_DEPLOYMENT_NAME
  azureOpenAIApiEmbeddingsDeploymentName:
    "YOUR-AOAI-EMBEDDINGS-DEPLOYMENT-NAME", // In Node.js defaults to process.env.AZURE_OPENAI_API_EMBEDDINGS_DEPLOYMENT_NAME
  azureOpenAIApiVersion: "YOUR-AOAI-API-VERSION", // In Node.js defaults to process.env.AZURE_OPENAI_API_VERSION
  azureOpenAIBasePath: "YOUR-AZURE-OPENAI-BASE-PATH", // In Node.js defaults to process.env.AZURE_OPENAI_BASE_PATH
  promptLayerApiKey: "YOUR-API-KEY", // In Node.js defaults to process.env.PROMPTLAYER_API_KEY
});
const res = await model.invoke(
  "What would be a good company name a company that makes colorful socks?"
);
The request and the response will be logged in the PromptLayer dashboard.
Note: In streaming mode PromptLayer will not log the response.