Remove default model to prevent necessitating a breaking change when the model is deprecated

Author: alexrudall

lib/openai/realtime.rb

@@ -1,7 +1,5 @@
 module OpenAI
   class Realtime
-    DEFAULT_REALTIME_MODEL = "gpt-4o-realtime-preview-2024-12-17".freeze
-
     def initialize(client:)
       @client = client.beta(realtime: "v1")
     end
@@ -11,15 +9,11 @@ def initialize(client:)
     # This method sets up a new session for real-time voice interaction with an OpenAI model.
     # It returns session details that can be used to establish a WebRTC connection.
     #
-    # By default, this method uses the 'gpt-4o-realtime-preview-2024-12-17' model
-    # unless specified otherwise.
     #
     # @param parameters [Hash] parameters for the session (see: https://platform.openai.com/docs/api-reference/realtime-sessions/create)
     # @return [Hash] Session details including session ID, ICE servers, and other
     # connection information
     def create(parameters: {})
-      parameters = parameters.merge(model: DEFAULT_REALTIME_MODEL) unless parameters[:model]
-
       @client.json_post(path: "/realtime/sessions", parameters: parameters)
     end
   end

spec/fixtures/cassettes/realtime_session_create_default.yml

@@ -3,15 +3,6 @@
   let(:realtime) { client.realtime }
 
   describe "#create" do
-    context "when no model is specified" do
-      it "uses the default model" do
-        VCR.use_cassette("realtime_session_create_default") do
-          response = realtime.create
-          expect(response["model"]).to eq(OpenAI::Realtime::DEFAULT_REALTIME_MODEL)
-        end
-      end
-    end
-
     context "when a model is specified" do
       it "uses the specified model" do
         custom_model = "gpt-4o-realtime-preview-2024-12-18"