javascriptfirebasegoogle-cloud-vertex-aifirebase-ai-logic

Error trying to use "gemini-2.5-pro-preview-06-05" in Firebase Vertex AI

I'm using Vertex AI in an Angular project with Firebase.

The latest 2.5 Flash model works.

const model = getGenerativeModel(this.vertexAI, { model: "gemini-2.5-flash-preview-05-20" });

But when I try to use 2.5 Pro I get a 404 error

const model = getGenerativeModel(this.vertexAI, { model: "gemini-2.5-pro-preview-06-05" });

The model is publicly available

Am I missing something?

I attached an image of the error enter image description here

Solution

  • You've got the model name right, but the issue is with the location you are sending the request to.

    The gemini-2.5-pro-preview-06-05 model is currently only available in the global location, not in specific regions like us-central1. Your error message shows the request is being routed to us-central1, which is why it's returning a 404 Not Found.

    The Fix

    You need to specify the global location when you initialize the Vertex AI instance.

    
import { getVertexAI } from "firebase/vertex-ai-preview";

// ... inside your service or component

// Initialize Vertex AI with the 'global' location

const vertexAI = getVertexAI(this.firebaseApp, { location: 'global' });

// Now, get the generative model

const model = getGenerativeModel(vertexAI, { model: "gemini-2.5-pro-preview-06-05" });

// ... the rest of your code will now work

    By explicitly setting location: 'global', the SDK will construct the correct URL to the global endpoint, and your request will succeed.

    Official Documentation

    This requirement is mentioned in the official Google Cloud documentation for Gemini 2.5 Pro:

    Important: Only the global endpoint is supported. For more information, see Global endpoint.

    This is confusing, since other Vertex AI models are available in specific regions. I only figured it out when I stumbled upon this reddit thread.