diff --git a/README.md b/README.md
index 0854812..dc90f3c 100644
--- a/README.md
+++ b/README.md
@@ -28,13 +28,13 @@ class LanguageModel
   end
 
   def self.all
-    gpt_4_turbo = LanguageModel.new(
-      name: "GPT-4 Turbo",
+    gpt_4o = LanguageModel.new(
+      name: "GPT-4o",
       kind: "completion",
       provider: "openai",
       configuration: {
         "api_key" => "your_key",
-        "model" => "gpt-4-turbo"
+        "model" => "gpt-4o"
       }
     )
 
@@ -48,7 +48,7 @@ class LanguageModel
       }
     )
 
-    [gpt_4_turbo, ada2]
+    [gpt_4o, ada2]
   end
 end
 
diff --git a/lib/openai_api/completion.rb b/lib/openai_api/completion.rb
index fe07014..683235f 100644
--- a/lib/openai_api/completion.rb
+++ b/lib/openai_api/completion.rb
@@ -11,12 +11,14 @@ class Completion # rubocop:disable Metrics/ClassLength
     def initialize(model, stream: nil, raw: false)
       @name = model.name
       @api_key = model.configuration["api_key"]
+      @model_identifier = model.configuration["model"]
       @api_url = "https://api.openai.com/v1/chat/completions"
       @stream = stream
       @raw = raw
     end
 
     def chat(parameters)
+      parameters[:model] = @model_identifier
       # Rails.logger.info("Chatting with \"#{@name}\" model with URL: #{@api_url}.")
       if @stream.nil?
         single_request_chat(parameters)
diff --git a/lib/openai_api/embedding.rb b/lib/openai_api/embedding.rb
index 99715ca..121c3b0 100644
--- a/lib/openai_api/embedding.rb
+++ b/lib/openai_api/embedding.rb
@@ -8,10 +8,12 @@ class Embedding
     def initialize(model)
       @name = model.name
       @api_key = model.configuration["api_key"]
+      @model_identifier = model.configuration["model"]
       @api_url = "https://api.openai.com/v1/embeddings"
     end
 
     def embed(parameters)
+      parameters[:model] = @model_identifier
       # Rails.logger.info("Embedding with \"#{@name}\" model with URL: #{@api_url}.")
       response = connection.post do |request|
         request.params = params
diff --git a/test/test_openai_api.rb b/test/test_openai_api.rb
index 88020df..1d75107 100644
--- a/test/test_openai_api.rb
+++ b/test/test_openai_api.rb
@@ -31,17 +31,17 @@ def self.all # rubocop:disable Metrics/MethodLength
       }
     )
 
-    gpt4turbo = LanguageModel.new(
-      name: "GPT-4-Turbo",
+    gpt4o = LanguageModel.new(
+      name: "GPT-4o",
       kind: "completion",
       provider: "openai",
       configuration: {
         "api_key" => ENV.fetch("OPENAI_API_KEY"),
-        "model" => "gpt-4-turbo"
+        "model" => "gpt-4o"
       }
     )
 
-    [ada2, gpt4turbo]
+    [ada2, gpt4o]
   end
 end
 
@@ -92,8 +92,7 @@ def test_chat # rubocop:disable Metrics/MethodLength
           "role" => "system",
           "content" => "Tell me a joke"
         }
-      ],
-      "model": "gpt-4o"
+      ]
     }
 
     VCR.use_cassette("test_chat") do
@@ -117,8 +116,7 @@ def test_chat_content_filter # rubocop:disable Metrics/MethodLength
           "role" => "user",
           "content" => "FUCK SHIT PISS."
         }
-      ],
-      "model": "gpt-4o"
+      ]
     }
 
     VCR.use_cassette("test_chat_content_filter") do
@@ -133,8 +131,7 @@ def test_embedding
     first_embedding_model = LanguageModel.all.find { |model| model.kind == "embedding" }
     client = OpenAIAPI::Embedding.new(first_embedding_model)
     parameters = {
-      "input" => "Once upon a time",
-      "model": "text-embedding-ada-002",
+      "input" => "Once upon a time"
     }
 
     VCR.use_cassette("test_embedding") do