Request allowlist access for Gemini TTS (audio output) on GCP project

Gemini API
1

Hello Gemini team,

I’m requesting allowlist access for Gemini audio output / text-to-speech models on my Google Cloud project.

Project details:

  • Project name: TTS audio gen
  • Project ID: Modified by moderator
  • Billing: Active (billing account attached)

Models requested:

  • gemini-2.5-pro-preview-tts
  • gemini-2.5-flash-preview-tts

Use case:
Long-form educational narration for an LMS (Ayurveda curriculum), including accurate pronunciation of Sanskrit terminology.

Current error:
“You are not allowlisted to request audio output.”

Thank you very much.

5

Hi @Samya_Spa, welcome to the forum!

Please try using the TTS models directly through the Gemini API since there’s no allowlist required: Speech Generation

Thank you!