diff --git a/src/models/create_answer_response.ml b/src/models/create_answer_response.ml
index f0edbc2..5885755 100644
--- a/src/models/create_answer_response.ml
+++ b/src/models/create_answer_response.ml
@@ -6,7 +6,7 @@
  *)
 
 type t = {
-    _object: string option [@default None];
+    _object: string option [@default None] [@key "object"];
     model: string option [@default None];
     search_model: string option [@default None];
     completion: string option [@default None];
diff --git a/src/models/create_chat_completion_response.ml b/src/models/create_chat_completion_response.ml
index c4bdb36..5b4d549 100644
--- a/src/models/create_chat_completion_response.ml
+++ b/src/models/create_chat_completion_response.ml
@@ -7,7 +7,7 @@
 
 type t = {
     id: string;
-    _object: string;
+    _object: string [@key "object"];
     created: int32;
     model: string;
     choices: Create_chat_completion_response_choices.t list;
diff --git a/src/models/create_classification_response.ml b/src/models/create_classification_response.ml
index b2e00ba..058535b 100644
--- a/src/models/create_classification_response.ml
+++ b/src/models/create_classification_response.ml
@@ -6,7 +6,7 @@
  *)
 
 type t = {
-    _object: string option [@default None];
+    _object: string option [@default None] [@key "object"];
     model: string option [@default None];
     search_model: string option [@default None];
     completion: string option [@default None];
diff --git a/src/models/create_completion_response.ml b/src/models/create_completion_response.ml
index 036ee05..4dff423 100644
--- a/src/models/create_completion_response.ml
+++ b/src/models/create_completion_response.ml
@@ -7,7 +7,7 @@
 
 type t = {
     id: string;
-    _object: string;
+    _object: string [@key "object"];
     created: int32;
     model: string;
     choices: Create_completion_response_choices.t list;
diff --git a/src/models/create_edit_response.ml b/src/models/create_edit_response.ml
index 00ea2ec..0f62542 100644
--- a/src/models/create_edit_response.ml
+++ b/src/models/create_edit_response.ml
@@ -6,7 +6,7 @@
  *)
 
 type t = {
-    _object: string;
+    _object: string [@key "object"];
     created: int32;
     choices: Create_completion_response_choices.t list;
     usage: Create_completion_response_usage.t;
diff --git a/src/models/create_embedding_response.ml b/src/models/create_embedding_response.ml
index ed9cc44..7a7a3a6 100644
--- a/src/models/create_embedding_response.ml
+++ b/src/models/create_embedding_response.ml
@@ -6,7 +6,7 @@
  *)
 
 type t = {
-    _object: string;
+    _object: string [@key "object"];
     model: string;
     data: Create_embedding_response_data.t list;
     usage: Create_embedding_response_usage.t;
diff --git a/src/models/create_embedding_response_data.ml b/src/models/create_embedding_response_data.ml
index f64b163..9a7c3c7 100644
--- a/src/models/create_embedding_response_data.ml
+++ b/src/models/create_embedding_response_data.ml
@@ -7,7 +7,7 @@
 
 type t = {
     index: int32;
-    _object: string;
+    _object: string [@key "object"];
     embedding: float list;
 } [@@deriving yojson { strict = false }, show ];;
 
diff --git a/src/models/create_search_response.ml b/src/models/create_search_response.ml
index 6260c6b..94e206a 100644
--- a/src/models/create_search_response.ml
+++ b/src/models/create_search_response.ml
@@ -6,7 +6,7 @@
  *)
 
 type t = {
-    _object: string option [@default None];
+    _object: string option [@default None] [@key "object"];
     model: string option [@default None];
     data: Create_search_response_data.t list;
 } [@@deriving yojson { strict = false }, show ];;
diff --git a/src/models/create_search_response_data.ml b/src/models/create_search_response_data.ml
index 7b33ea2..1998fd4 100644
--- a/src/models/create_search_response_data.ml
+++ b/src/models/create_search_response_data.ml
@@ -6,7 +6,7 @@
  *)
 
 type t = {
-    _object: string option [@default None];
+    _object: string option [@default None] [@key "object"];
     document: int32 option [@default None];
     score: float option [@default None];
 } [@@deriving yojson { strict = false }, show ];;
diff --git a/src/models/delete_file_response.ml b/src/models/delete_file_response.ml
index 5863b35..382c8ba 100644
--- a/src/models/delete_file_response.ml
+++ b/src/models/delete_file_response.ml
@@ -7,7 +7,7 @@
 
 type t = {
     id: string;
-    _object: string;
+    _object: string [@key "object"];
     deleted: bool;
 } [@@deriving yojson { strict = false }, show ];;
 
diff --git a/src/models/delete_model_response.ml b/src/models/delete_model_response.ml
index 5863b35..382c8ba 100644
--- a/src/models/delete_model_response.ml
+++ b/src/models/delete_model_response.ml
@@ -7,7 +7,7 @@
 
 type t = {
     id: string;
-    _object: string;
+    _object: string [@key "object"];
     deleted: bool;
 } [@@deriving yojson { strict = false }, show ];;
 
diff --git a/src/models/fine_tune.ml b/src/models/fine_tune.ml
index 413460c..7c8edcf 100644
--- a/src/models/fine_tune.ml
+++ b/src/models/fine_tune.ml
@@ -7,7 +7,7 @@
 
 type t = {
     id: string;
-    _object: string;
+    _object: string [@key "object"];
     created_at: int32;
     updated_at: int32;
     model: string;
@@ -21,7 +21,7 @@ type t = {
     events: Fine_tune_event.t list;
 } [@@deriving yojson { strict = false }, show ];;
 
-let create (id : string) (_object : string) (created_at : int32) (updated_at : int32) (model : string) (fine_tuned_model : stringoption) (organization_id : string) (status : string) (hyperparams : Yojson.Safe.t) (training_files : Open_ai_file.t list) (validation_files : Open_ai_file.t list) (result_files : Open_ai_file.t list) : t = {
+let create (id : string) (_object : string) (created_at : int32) (updated_at : int32) (model : string) (fine_tuned_model : string option) (organization_id : string) (status : string) (hyperparams : Yojson.Safe.t) (training_files : Open_ai_file.t list) (validation_files : Open_ai_file.t list) (result_files : Open_ai_file.t list) : t = {
     id = id;
     _object = _object;
     created_at = created_at;
diff --git a/src/models/fine_tune_event.ml b/src/models/fine_tune_event.ml
index a450858..63d4c0c 100644
--- a/src/models/fine_tune_event.ml
+++ b/src/models/fine_tune_event.ml
@@ -6,7 +6,7 @@
  *)
 
 type t = {
-    _object: string;
+    _object: string [@key "object"];
     created_at: int32;
     level: string;
     message: string;
diff --git a/src/models/list_engines_response.ml b/src/models/list_engines_response.ml
index f58048e..7c9abee 100644
--- a/src/models/list_engines_response.ml
+++ b/src/models/list_engines_response.ml
@@ -6,7 +6,7 @@
  *)
 
 type t = {
-    _object: string;
+    _object: string [@key "object"];
     data: Engine.t list;
 } [@@deriving yojson { strict = false }, show ];;
 
diff --git a/src/models/list_files_response.ml b/src/models/list_files_response.ml
index 7c89dee..5e49deb 100644
--- a/src/models/list_files_response.ml
+++ b/src/models/list_files_response.ml
@@ -6,7 +6,7 @@
  *)
 
 type t = {
-    _object: string;
+    _object: string [@key "object"];
     data: Open_ai_file.t list;
 } [@@deriving yojson { strict = false }, show ];;
 
diff --git a/src/models/list_fine_tune_events_response.ml b/src/models/list_fine_tune_events_response.ml
index cc422fb..348fcf1 100644
--- a/src/models/list_fine_tune_events_response.ml
+++ b/src/models/list_fine_tune_events_response.ml
@@ -6,7 +6,7 @@
  *)
 
 type t = {
-    _object: string;
+    _object: string [@key "object"];
     data: Fine_tune_event.t list;
 } [@@deriving yojson { strict = false }, show ];;
 
diff --git a/src/models/list_fine_tunes_response.ml b/src/models/list_fine_tunes_response.ml
index 235612f..a8cba38 100644
--- a/src/models/list_fine_tunes_response.ml
+++ b/src/models/list_fine_tunes_response.ml
@@ -6,7 +6,7 @@
  *)
 
 type t = {
-    _object: string;
+    _object: string [@key "object"];
     data: Fine_tune.t list;
 } [@@deriving yojson { strict = false }, show ];;
 
diff --git a/src/models/list_models_response.ml b/src/models/list_models_response.ml
index c4c482b..651d09a 100644
--- a/src/models/list_models_response.ml
+++ b/src/models/list_models_response.ml
@@ -6,7 +6,7 @@
  *)
 
 type t = {
-    _object: string;
+    _object: string [@key "object"];
     data: Model.t list;
 } [@@deriving yojson { strict = false }, show ];;
 
diff --git a/src/models/open_ai_file.ml b/src/models/open_ai_file.ml
index 5248522..338df0a 100644
--- a/src/models/open_ai_file.ml
+++ b/src/models/open_ai_file.ml
@@ -7,7 +7,7 @@
 
 type t = {
     id: string;
-    _object: string;
+    _object: string [@key "object"];
     bytes: int32;
     created_at: int32;
     filename: string;