# Allowlist request: gemini-3.1-flash-image-preview / gemini-3-pro-image-preview on Vertex AI

**URL:** <https://discuss.ai.google.dev/t/allowlist-request-gemini-3-1-flash-image-preview-gemini-3-pro-image-preview-on-vertex-ai/176173>\
**Category:** Gemini API\
**Tags:** vertex-ai\
**Created:** [July 27, 2026, 3:59am UTC](https://discuss.ai.google.dev/t/allowlist-request-gemini-3-1-flash-image-preview-gemini-3-pro-image-preview-on-vertex-ai/176173 "2026-07-27T03:59:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Close\_Class](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/close_class/32/139091_2.png) [@Close\_Class](https://discuss.ai.google.dev/u/Close_Class)\
**Post date:** [July 27, 2026, 3:59am UTC](https://discuss.ai.google.dev/t/allowlist-request-gemini-3-1-flash-image-preview-gemini-3-pro-image-preview-on-vertex-ai/176173/1 "2026-07-27T03:59:43Z")

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Hello Google AI Team,

Requesting allowlist access for the following Vertex AI preview models:

- gemini-3.1-flash-image-preview
- gemini-3-pro-image-preview

Project Information:  
GCP Project ID: gen-lang-client-08806943..  
Region: global  
Billing: Enabled (active)  
Vertex AI API: Enabled  
Service Account role: Vertex AI User (roles/aiplatform.user)  
Use case: AI image generation for social media content on a subscription platform (CloseClass)  
Current status: receiving 404 NOT\_FOUND when calling these models. We have verified end-to-end integration on gemini-2.5-flash-image and are ready to upgrade.

Thank you!

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**Author:** ![Pooja\_Kapse](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/pooja_kapse/32/24754_2.png) [@Pooja\_Kapse](https://discuss.ai.google.dev/u/Pooja_Kapse)\
**Post date:** [July 27, 2026, 10:00am UTC](https://discuss.ai.google.dev/t/allowlist-request-gemini-3-1-flash-image-preview-gemini-3-pro-image-preview-on-vertex-ai/176173/2 "2026-07-27T10:00:50Z")

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Hello @Close_Class ,

For issues related to the Vertex AI API, please contact your sales representative if you have one. Otherwise, you can find more relevant assistance on the [Google Cloud Forum](https://discuss.google.dev/c/google-cloud/14).