# Should I be concerned with the recent deprecation of vertexai.generative\_models?

**URL:** <https://forum.langchain.com/t/should-i-be-concerned-with-the-recent-deprecation-of-vertexai-generative-models/1317>\
**Category:** LangSmith Product Help\
**Created:** [August 22, 2025, 4:44pm UTC](https://forum.langchain.com/t/should-i-be-concerned-with-the-recent-deprecation-of-vertexai-generative-models/1317 "2025-08-22T16:44:05Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Onturenio](https://yyz1.discourse-cdn.com/flex007/user_avatar/forum.langchain.com/onturenio/32/684_2.png) [@Onturenio](https://forum.langchain.com/u/Onturenio)\
**Post date:** [August 22, 2025, 4:44pm UTC](https://forum.langchain.com/t/should-i-be-concerned-with-the-recent-deprecation-of-vertexai-generative-models/1317/1 "2025-08-22T16:44:05Z")

</div>

Hi, my application runs `ChatVertexAI` from langchain\_google\_vertexai. It’s not totally clear to me whether I should have to migrate anything after the [deprecation from Google of vertexai.generative\_models](https://cloud.google.com/vertex-ai/generative-ai/docs/deprecations/genai-vertexai-sdk).

Is the library being updated to cope with deprecation in a manner that is transparent for users? Or should I migrate to other library?

This should be a fairly common case for many users, but surprisingly I could not find a clear answer to this issue. Thank you very much.

---

<div class="post-metadata">

**Author:** ![SebConejo](https://yyz1.discourse-cdn.com/flex007/user_avatar/forum.langchain.com/sebconejo/32/3741_2.png) [@SebConejo](https://forum.langchain.com/u/SebConejo)\
**Post date:** [October 26, 2026, 2:57pm UTC](https://forum.langchain.com/t/should-i-be-concerned-with-the-recent-deprecation-of-vertexai-generative-models/1317/2 "2026-10-26T14:57:53Z")

</div>

This post was flagged by the community and is temporarily hidden.

---

<div class="post-metadata">

**Author:** ![mdrxy](https://yyz1.discourse-cdn.com/flex007/user_avatar/forum.langchain.com/mdrxy/32/2481_2.png) [@mdrxy](https://forum.langchain.com/u/mdrxy)\
**Post date:** [October 26, 2026, 3:06pm UTC](https://forum.langchain.com/t/should-i-be-concerned-with-the-recent-deprecation-of-vertexai-generative-models/1317/3 "2026-10-26T15:06:12Z")

</div>

Hi, sorry for the slow reply. Yes, you should migrate. Rather than being updated to drop the deprecated module, `ChatVertexAI` itself is deprecated: it was marked deprecated in `langchain-google-vertexai` 3.2.0 and will be removed in 4.0.0.

Switch to `ChatGoogleGenerativeAI` from `langchain-google-genai`. It’s built on Google’s unified `google-genai` SDK and still runs against Vertex AI, so you keep your project, billing and existing credentials:

```python
from langchain_google_genai import ChatGoogleGenerativeAI

llm = ChatGoogleGenerativeAI(model="gemini-3.5-flash", project="your-project-id")

```

- Backend selection and auth: [ChatGoogleGenerativeAI integration - Docs by LangChain](https://docs.langchain.com/oss/python/integrations/chat/google_generative_ai#backend-selection)
- Migration guide: [`langchain-google-genai` 4.0.0 Released! (Consolidated SDK, Vertex deprecations, and more) · langchain-ai/langchain-google · Discussion #1422 · GitHub](https://github.com/langchain-ai/langchain-google/discussions/1422)