vertexai

Vertex AI Go SDK

[!NOTE] Starting on June 24, 2025, the cloud.google.com/go/vertexai/genai package is deprecated and will be removed on June 24, 2026, except cloud.google.com/go/vertexai/genai/tokenizer. New users are encouraged to use the Google GenAI Go SDK available at google.golang.org/genai For information about migrating to the Google Gen AI SDK, see Vertex AI SDK migration guide.

The Vertex AI Go SDK enables developers to use Google's state-of-the-art generative AI models (like Gemini) to build AI-powered features and applications.

This SDK supports use cases like:

• Generate text from text-only input
• Generate text from text-and-images input (multimodal)
• Build multi-turn conversations (chat)

For example, with just a few lines of code, you can access Gemini's multimodal capabilities to generate text from text-and-image input.

model := client.GenerativeModel("gemini-pro-vision") img := genai.ImageData("jpeg", image_bytes) prompt := genai.Text("Please give me a recipe for this:") resp, err := model.GenerateContent(ctx, img, prompt) 

Installation and usage

Add the SDK to your module with go get cloud.google.com/go/vertexai/genai.

For detailed instructions, you can find a quickstart for the Vertex AI Go SDK in the Google Cloud documentation.

Documentation

You can find complete documentation for the Vertex AI SDKs and the Gemini model in the Google Cloud documentation: https://cloud.google.com/vertex-ai/docs/generative-ai/learn/overview

For a list of the supported models and their capabilities, see https://cloud.google.com/vertex-ai/docs/generative-ai/learn/model-versioning

You can also find information about this SDK in the Go package documentation.

Check out some usage samples:

• In the package documentation
• In the vertexai golang-samples repository

Contributing

See Contributing for more information on contributing to the Vertex AI Go SDK.

License

The contents of this repository are licensed under the Apache License, version 2.0.