diff --git a/src/antares/craft/exceptions/exceptions.py b/src/antares/craft/exceptions/exceptions.py
index fa06367c..a7f01a40 100644
--- a/src/antares/craft/exceptions/exceptions.py
+++ b/src/antares/craft/exceptions/exceptions.py
@@ -329,6 +329,11 @@ def __init__(self, study_id: str, message: str) -> None:
         self.message = f"Could not get outputs for {study_id}: " + message
         super().__init__(self.message)
 
+class OutputDeletionError(Exception):
+    def __init__(self, study_id: str, output_name:str, message: str) -> None:
+        self.message = f"Could not delete the output {output_name} from study {study_id}: " + message
+        super().__init__(self.message)
+
 
 class AggregateCreationError(Exception):
     def __init__(self, study_id: str, output_id: str, mc_type: str, object_type: str, message: str) -> None:
diff --git a/src/antares/craft/model/study.py b/src/antares/craft/model/study.py
index e74815f9..8a31e201 100644
--- a/src/antares/craft/model/study.py
+++ b/src/antares/craft/model/study.py
@@ -403,9 +403,11 @@ def get_output(self, output_id: str) -> Output:
 
     def delete_outputs(self) -> None:
         self._study_service.delete_outputs()
+        self._outputs.clear()
 
     def delete_output(self, output_name: str) -> None:
         self._study_service.delete_output(output_name)
+        self._outputs.pop(output_name)
 
 def _verify_study_already_exists(study_directory: Path) -> None:
     if study_directory.exists():
diff --git a/src/antares/craft/service/api_services/study_api.py b/src/antares/craft/service/api_services/study_api.py
index 2c6cdd66..3c5183e2 100644
--- a/src/antares/craft/service/api_services/study_api.py
+++ b/src/antares/craft/service/api_services/study_api.py
@@ -21,7 +21,7 @@
     OutputsRetrievalError,
     StudyDeletionError,
     StudySettingsUpdateError,
-    StudyVariantCreationError,
+    StudyVariantCreationError, OutputDeletionError,
 )
 from antares.craft.model.binding_constraint import BindingConstraint
 from antares.craft.model.output import Output
@@ -143,7 +143,19 @@ def read_outputs(self) -> list[Output]:
             raise OutputsRetrievalError(self.study_id, e.message)
 
     def delete_outputs(self) -> None:
-        pass
+        outputs_url = f"{self._base_url}/studies/{self.study_id}/outputs"
+        try:
+            response = self._wrapper.get(outputs_url)
+            outputs_json_list = response.json()
+            for output in outputs_json_list:
+                output_name = output["name"]
+                self.delete_output(output_name)
+        except APIError as e:
+            raise OutputsRetrievalError(self.study_id, e.message)
 
     def delete_output(self, output_name: str) -> None:
-        pass
+        url = f"{self._base_url}/studies/{self.study_id}/outputs/{output_name}"
+        try:
+            self._wrapper.delete(url)
+        except APIError as e:
+            raise OutputDeletionError(self.study_id, output_name, e.message) from e