Google Gemini API

active API / developer platform

Google Gemini API (paid tier) permits commercial use and does not use prompts for training by default; free tier uses data to improve Google products.

Google's Gemini API is offered via Google AI Studio (free + paid). On paid tier, prompts and responses are not used to train Google models. Free tier may be used for product improvement. Vertex AI is a separate enterprise-tier offering with stricter data handling.

Analysis & practical guidance

The free tier trains on you — the paid tier does not

The Gemini API has a data split that mirrors consumer Gemini: on the free tier, your prompts and responses can be used to improve Google products; on the paid tier, they are not. This is the opposite of OpenAI's API, where even the free credits do not feed training. If you prototype on the Gemini free tier with real data, treat that data as disclosed.

Practical implications

Move to the paid tier before putting any confidential or customer data through the API — the free tier is for throwaway experimentation only.
Vertex AI is a separate, enterprise-grade path with stricter data isolation, regional controls, and IAM. For regulated workloads, evaluate Vertex rather than the AI Studio API.
Generous free quotas make Gemini attractive for learning and demos — just not with sensitive inputs.

When to choose it

Choose the Gemini API for strong multimodal and long-context capability, especially if you are already on Google Cloud. For a clean no-training default at every tier, OpenAI or Anthropic are simpler to reason about.

Basics

slug: google-gemini-api
type: API / developer platform
status: active
last checked: 2026-04-18
official site: https://ai.google.dev
official docs: https://ai.google.dev/gemini-api/docs

Rights

Key	Value	Condition	Source	Checked
`commercial_use_allowed`	yes		Gemini API Additional Terms	2026-04-18
`output_ownership`	yes		Gemini API Additional Terms	2026-04-18
`training_use_of_input`	conditional	Free tier: yes (for product improvement). Paid tier: no.	Gemini API Additional Terms	2026-04-18