Ollama instead of OpenAI in RubyLLM gem

ollama_ruby_llm.rb

require "ruby_llm"

module RubyLLM::Providers::OpenAI
  def self.api_base
    "http://localhost:11434/v1"
  end
end

RubyLLM.configure do |config|
  config.openai_api_key = 'ollama'
end

phi4_model = RubyLLM::ModelInfo.new({
  id: "phi4",
  created_at: "2024-08-13T04:12:11+02:00",
  display_name: "Phi4",
  provider: "openai",
  context_window: 128000,
  max_tokens: 16384,
  type: "chat",
  family: "chatgpt4o",
  supports_vision: true,
  supports_functions: false,
  supports_json_mode: true,
  input_price_per_million: 5.0,
  output_price_per_million: 15.0,
  metadata: {
    object: "model",
    owned_by: "system"
  }
})

RubyLLM::Models.all.append(phi4_model)

chat = RubyLLM.chat(model: "phi4")

chat.ask "What's the difference between attr_reader and attr_accessor?"