docs: add deprecation notice to readme for Generative AI submodules: vertexai.generative_models, vertexai.language_models, vertexai.vision_models, vertexai.tuning, vertexai.caching

README.rst

@@ -1,6 +1,14 @@
 Vertex AI SDK for Python
 =================================================
 
+.. note::
+
+   The following Generative AI modules in the Vertex AI SDK are deprecated as of June 24, 2025 and will be removed on June 24, 2026:
+   `vertexai.generative_models`, `vertexai.language_models`, `vertexai.vision_models`, `vertexai.tuning`, `vertexai.caching`. Please use the
+   [Google Gen AI SDK](https://pypi.org/project/google-genai/) to access these features. See
+   [the migration guide](https://cloud.google.com/vertex-ai/generative-ai/docs/deprecations/genai-vertexai-sdk) for details.
+   You can continue using all other Vertex AI SDK modules, as they are the recommended way to use the API.
+
 |GA| |pypi| |versions| |unit-tests| |system-tests| |sample-tests|
 
 `Vertex AI`_: Google Vertex AI is an integrated suite of machine learning tools and services for building and using ML models with AutoML or custom code. It offers both novices and experts the best workbench for the entire machine learning development lifecycle.

vertexai/_model_garden/_model_garden_models.py

@@ -24,6 +24,7 @@
 from google.cloud.aiplatform import initializer as aiplatform_initializer
 from google.cloud.aiplatform import models as aiplatform_models
 from google.cloud.aiplatform import _publisher_models
+from vertexai._utils import warning_logs
 
 _SUPPORTED_PUBLISHERS = ["google"]
 
@@ -274,7 +275,7 @@ def from_pretrained(cls: Type[T], model_name: str) -> T:
             ValueError: If model_name is unknown.
             ValueError: If model does not support this class.
         """
-
+        warning_logs.show_deprecation_warning()
         credential_exception_str = (
             "\nUnable to authenticate your request."
             "\nDepending on your runtime environment, you can complete authentication by:"

vertexai/_utils/warning_logs.py

@@ -0,0 +1,31 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import warnings
+
+
+GENAI_DEPRECATION_WARNING_MESSAGE = (
+    "This feature is deprecated as of June 24, 2025 and will be removed on June"
+    " 24, 2026. For details, see"
+    " https://cloud.google.com/vertex-ai/generative-ai/docs/deprecations/genai-vertexai-sdk."
+)
+
+
+def show_deprecation_warning() -> None:
+    warnings.warn(
+        message=GENAI_DEPRECATION_WARNING_MESSAGE,
+        category=UserWarning,
+        stacklevel=2,
+    )

vertexai/caching/_caching.py

@@ -49,6 +49,7 @@
     ContentsType,
 )
 from google.protobuf import field_mask_pb2
+from vertexai._utils import warning_logs
 
 
 def _prepare_create_request(
@@ -157,6 +158,7 @@ def __init__(self, cached_content_name: str):
                 ID. Example: "projects/.../locations/../cachedContents/456" or
                 "456".
         """
+        warning_logs.show_deprecation_warning()
         super().__init__(resource_name=cached_content_name)
         self._gca_resource = self._get_gca_resource(cached_content_name)
 

vertexai/generative_models/_generative_models.py

@@ -62,6 +62,7 @@
 from google.protobuf import json_format
 from google.protobuf import field_mask_pb2
 import warnings
+from vertexai._utils import warning_logs
 
 if TYPE_CHECKING:
     from vertexai.caching import CachedContent
@@ -429,6 +430,7 @@ def __init__(
                 Content of each part will become a separate paragraph.
             labels: labels that will be passed to billing for cost tracking.
         """
+        warning_logs.show_deprecation_warning()
         project = aiplatform_initializer.global_config.project
         location = aiplatform_initializer.global_config.location
         model_name = _reconcile_model_name(model_name, project, location)

vertexai/language_models/_language_models.py

@@ -42,6 +42,7 @@
 from vertexai.language_models import (
     _evaluatable_language_models,
 )
+from vertexai._utils import warning_logs
 
 try:
     import pandas
@@ -3275,6 +3276,7 @@ def __init__(
         message_history: Optional[List[ChatMessage]] = None,
         stop_sequences: Optional[List[str]] = None,
     ):
+        warning_logs.show_deprecation_warning()
         super().__init__(
             model=model,
             context=context,
@@ -3305,6 +3307,7 @@ def __init__(
         message_history: Optional[List[ChatMessage]] = None,
         stop_sequences: Optional[List[str]] = None,
     ):
+        warning_logs.show_deprecation_warning()
         super().__init__(
             model=model,
             context=context,

vertexai/tuning/_tuning.py

@@ -38,7 +38,7 @@
 from google.cloud.aiplatform_v1beta1 import types as gca_types
 
 from google.rpc import status_pb2  # type: ignore
-
+from vertexai._utils import warning_logs
 
 _LOGGER = aiplatform_base.Logger(__name__)
 
@@ -71,6 +71,7 @@ class TuningJob(aiplatform_base._VertexAiResourceNounPlus):
     api_client: gen_ai_tuning_service_v1beta1.client.GenAiTuningServiceClient
 
     def __init__(self, tuning_job_name: str):
+        warning_logs.show_deprecation_warning()
         super().__init__(resource_name=tuning_job_name)
         self._gca_resource: gca_tuning_job_types.TuningJob = self._get_gca_resource(
             resource_name=tuning_job_name

vertexai/vision_models/_vision_models.py

@@ -29,6 +29,7 @@
 
 from google.cloud.aiplatform import initializer as aiplatform_initializer
 from vertexai._model_garden import _model_garden_models
+from vertexai._utils import warning_logs
 
 # pylint: disable=g-import-not-at-top
 try:
@@ -149,6 +150,7 @@ def __init__(
             image_bytes: Image file bytes. Image can be in PNG or JPEG format.
             gcs_uri: Image URI in Google Cloud Storage.
         """
+        warning_logs.show_deprecation_warning()
         if bool(image_bytes) == bool(gcs_uri):
             raise ValueError("Either image_bytes or gcs_uri must be provided.")
 
@@ -487,6 +489,7 @@ def __init__(
                 MP4, MPEG, MPG, WEBM, and WMV formats.
             gcs_uri: Image URI in Google Cloud Storage.
         """
+        warning_logs.show_deprecation_warning()
         if bool(video_bytes) == bool(gcs_uri):
             raise ValueError("Either video_bytes or gcs_uri must be provided.")
 
@@ -594,6 +597,7 @@ def __init__(
             end_offset_sec: End time offset (in seconds) to generate embeddings for.
             interval_sec: Interval to divide video for generated embeddings.
         """
+        warning_logs.show_deprecation_warning()
         self.start_offset_sec = start_offset_sec
         self.end_offset_sec = end_offset_sec
         self.interval_sec = interval_sec
@@ -618,6 +622,7 @@ def __init__(
             end_offset_sec: End time offset (in seconds) of generated embeddings.
             embedding: Generated embedding for interval.
         """
+        warning_logs.show_deprecation_warning()
         self.start_offset_sec = start_offset_sec
         self.end_offset_sec = end_offset_sec
         self.embedding = embedding
@@ -1422,6 +1427,7 @@ def __init__(
             generation_parameters: Image generation parameter values.
             gcs_uri: Image file Google Cloud Storage uri.
         """
+        warning_logs.show_deprecation_warning()
         super().__init__(image_bytes=image_bytes, gcs_uri=gcs_uri)
         self._generation_parameters = generation_parameters