diff --git a/conversion/requests/chatgpt/convert.go b/conversion/requests/chatgpt/convert.go
index 49e25bf..0105e25 100644
--- a/conversion/requests/chatgpt/convert.go
+++ b/conversion/requests/chatgpt/convert.go
@@ -18,6 +18,10 @@ func ConvertAPIRequest(api_request official_types.APIRequest, account string, se
 		chatgpt_request.Model = "gpt-4o"
 	} else if strings.HasPrefix(api_request.Model, "gpt-4") {
 		chatgpt_request.Model = "gpt-4"
+	} else if strings.HasPrefix(api_request.Model, "o1-preview") {
+		chatgpt_request.Model = "o1-preview"
+	} else if strings.HasPrefix(api_request.Model, "o1-mini") {
+		chatgpt_request.Model = "o1-mini"
 	}
 	matches := gptsRegexp.FindStringSubmatch(api_request.Model)
 	if len(matches) == 2 {
diff --git a/handlers.go b/handlers.go
index c225081..a36c938 100644
--- a/handlers.go
+++ b/handlers.go
@@ -84,6 +84,18 @@ func simulateModel(c *gin.Context) {
 				"created":  1688888888,
 				"owned_by": "chatgpt-to-api",
 			},
+			{
+				"id":       "o1-preview",
+				"object":   "model",
+				"created":  1688888888,
+				"owned_by": "chatgpt-to-api",
+			},
+			{
+				"id":       "o1-mini",
+				"object":   "model",
+				"created":  1688888888,
+				"owned_by": "chatgpt-to-api",
+			},
 		},
 	})
 }