Allowlist request: gemini-3.1-flash-image-preview on Vertex AI

Hello Google Cloud team,

I am requesting allowlist access for the Gemini 3.1 preview image generation model in Vertex AI to utilize my Google Cloud $300 Free Trial credits.

Project Details:

  • GCP Project ID: gen-lang-client-0860960577
  • Billing Account ID: 01C68A-0805C1-41EDB4
  • Endpoint: global
  • Billing: Enabled (active, prepay)
  • Vertex AI API: Enabled

Models Requested:

  • gemini-3.1-flash-image-preview (Nano Banana 2)

Use Case:
I am developing an educational tool for Turkish medical students preparing for the TUS (Turkish Medical Specialty Exam). The system generates atlas-quality medical infographics from mind map outlines (covering physiology, anatomy, histology, embryology). I have already validated the workflow on the AI Studio API and successfully generated 500+ educational images, but my preview-tier API key does not utilize my $300 free trial credits, causing the credits to remain unused while I incur direct charges.

Current Usage Pattern:

  • ~50-100 images per topic
  • Total expected: 1500-2000 images for full TUS curriculum
  • Production-grade error handling, retry logic, and rate limiting already in place

I would like to use Vertex AI to leverage my free trial credits effectively. I have already verified end-to-end integration with the GA model gemini-2.5-flash-image, so the infrastructure is ready.

Thank you for your consideration.