Support for Google Vertex AI (and Vertex-hosted models like Claude Sonnet)

[yamitzky]

Hi, is there any plan to provide an official adapter for Google Vertex AI (including models served via Vertex, such as Anthropic models)?

I couldn’t find any existing discussion or implementation. For reference, the Vercel AI SDK already supports Google Vertex AI: see their documentation at https://ai-sdk.dev/providers/ai-sdk-providers/google-vertex

[da5idb]

The only thing currently preventing this is that the GeminiClientConfig requires an apiKey:

export interface GeminiClientConfig extends GoogleGenAIOptions {
  apiKey: string
}

The config should support using vertex AI as per the google/genai docs:
https://github.com/googleapis/js-genai?tab=readme-ov-file#vertex-ai

import { GoogleGenAI } from '@google/genai';

const ai = new GoogleGenAI({
    vertexai: true,
    project: 'your_project',
    location: 'your_location',
});