Legacy Gemma setup  |  Google AI for Developers
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Legacy Gemma setup
Note: This is only relevant for Gemma 3 and prior versions.
This page provides setup instructions for using Gemma in Colab. Some of the
instructions are applicable to other development environments as well.
Get access to Gemma
Before using Gemma for the first time, you must request access to the
model through Kaggle. As part of the process, you'll have to use a Kaggle
account to accept the Gemma use policy and license terms.
If you don't already have a Kaggle account, you can register for one at
kaggle.com. Then complete the following steps:
Go to the Gemma model card
and select Request Access.
Complete the consent form and accept the terms and conditions.
Select a Colab runtime
To complete a Colab tutorial, you must have a Colab runtime with sufficient
resources to run the Gemma model. To get started, you can
use a T4 GPU:
In the upper-right of the Colab window, select ▾
(Additional connection options).
Select Change runtime type.
Under Hardware accelerator, select T4 GPU.
Configure your API key
To use Gemma, you must provide your Kaggle username and a Kaggle API key. To
generate and configure these values, follow these steps:
To generate a Kaggle API key, go to the Account tab of your Kaggle user
profile and select Create New Token. This will trigger the download of a
kaggle.json file containing your API credentials.
Open kaggle.json in a text editor. The contents should look something like
this:
{"username":"your_username","key":"012345678abcdef012345678abcdef1a"}
In Colab, select Secrets (🔑) and add your Kaggle username and Kaggle
API key. Store your username under the name KAGGLE_USERNAME and your API
key under the name KAGGLE_KEY.
Note: Kaggle notebooks have a key storage feature under Add-ons >
Secrets, along with instructions for accessing stored keys.
Now you're ready to complete the remaining setup steps in Colab. If you're
working through a Colab tutorial, go to Colab and set the environment variables.
Tip: As an alternative to setting environment variables, you can use kagglehub
to authenticate.
Send feedback
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2026-04-09 UTC.
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