I am working in a prototype using the gem langchainrb. I am using the module assistant module to implemente a basic RAG architecture.

Everything works, and now I would like to customize the model configuration.

In the documenation there is no clear way of setting up the Model. In my case, I would like to use OpenAi and use:

• temperature: 0.1
• Model: gpt-4o

In the README, there is a mention about using llm_options.

If I go to the OpenAI Module documentation:

• https://rubydoc.info/gems/langchainrb/Langchain/LLM/OpenAI

It says I have to check here:

• https://github.com/alexrudall/ruby-openai/blob/main/lib/openai/client.rb#L5-L13

But there is not any mention of temperature, for example. Also, in the example in the Langchain::LLM::OpenAI documentation, the options are totally different.

# ruby-openai options:

CONFIG_KEYS = %i[
  api_type
  api_version
  access_token
  log_errors
  organization_id
  uri_base
  request_timeout
  extra_headers
].freeze

# Example in Class: Langchain::LLM::OpenAI documentation: 

{
  n: 1,
  temperature: 0.0,
  chat_completion_model_name: "gpt-3.5-turbo",
  embeddings_model_name: "text-embedding-3-small"
}.freeze

• Langchain.rb version: 0.13.4