Gemini CLI

If you use this, all of your code data will be sent to Google. From their terms:

https://developers.google.com/gemini-code-assist/resources/p...

When you use Gemini Code Assist for individuals, Google collects your prompts, related code, generated output, code edits, related feature usage information, and your feedback to provide, improve, and develop Google products and services and machine learning technologies.

To help with quality and improve our products (such as generative machine-learning models), human reviewers may read, annotate, and process the data collected above. We take steps to protect your privacy as part of this process. This includes disconnecting the data from your Google Account before reviewers see or annotate it, and storing those disconnected copies for up to 18 months. Please don't submit confidential information or any data you wouldn't want a reviewer to see or Google to use to improve our products, services, and machine-learning technologies.

Mozilla and Google provide an alternative called gemmafile which gives you an airgapped version of Gemini (which Google calls Gemma) that runs locally in a single file without any dependencies. https://huggingface.co/jartine/gemma-2-27b-it-llamafile It's been deployed into production by 32% of organizations: https://www.wiz.io/reports/the-state-of-ai-in-the-cloud-2025

That is just Gemma model. Most people seek capabilities equivalent for Gemini 2.5 Pro if they want to do any kind of coding.

Gemma 27b can write working code in dozens of programming languages. It can even translate between languages. It's obviously not as good as Gemini, which is the best LLM in the world, but Gemma is built from the same technology that powers Gemini and Gemma is impressively good for something that's only running locally on your CPU or GPU. It's a great choice for airgapped environments. Especially if you use old OSes like RHEL5.