diff --git a/assistant.go b/assistant.go
index 4e89643..6cf227c 100644
--- a/assistant.go
+++ b/assistant.go
@@ -234,7 +234,7 @@ func handleAssistantConversation(c tele.Context, thread []*tele.Message) error {
 	}
 
 	req := openai.ChatRequest{
-		Model:       openai.ModelGpt04,
+		Model:       openai.ModelGpt04Turbo,
 		Messages:    chatReqMsgs,
 		Temperature: lo.ToPtr(0.42),
 		MaxTokens:   2048,
diff --git a/openai/models.go b/openai/models.go
index 0749fa8..83a35d0 100644
--- a/openai/models.go
+++ b/openai/models.go
@@ -1,9 +1,11 @@
 package openai
 
 const (
-	ModelTextDavinciEdit001 = "text-davinci-edit-001"
-	ModelGpt0305Turbo       = "gpt-3.5-turbo"
-	ModelGpt0305Turbo_0301  = "gpt-3.5-turbo-0301"
-	ModelGpt04              = "gpt-4"
-	ModelGpt04_0314         = "gpt-4-0314"
+	ModelTextDavinciEdit001 = "text-davinci-edit-001" // legacy model
+	ModelGpt0305Turbo       = "gpt-3.5-turbo"         // legacy model
+	ModelGpt0305Turbo_0125  = "gpt-3.5-turbo-0125"    // legacy model
+	ModelGpt04              = "gpt-4"                 // legacy model
+	ModelGpt04_0613         = "gpt-4-0613"            // legacy model
+	ModelGpt04Turbo         = "gpt-4-turbo"
+	ModelGpt04Turbo_240409  = "gpt-4-turbo-2024-04-09"
 )
diff --git a/openai/prompts/prompts.go b/openai/prompts/prompts.go
index df23bf6..e55d8e4 100644
--- a/openai/prompts/prompts.go
+++ b/openai/prompts/prompts.go
@@ -12,6 +12,8 @@ func Assistant() string {
 		"Most importantly, Misaka is a helpful assistant.",
 		"",
 		"Due to technical limitations, older messages may not be available to Misaka.",
+		"",
+		"We are currently in the year 2024.",
 	}, "\n")
 }