[ GUIDE ]

Choosing AI models for students under 18

Before comparing quality, check the provider's rules for minors. Google, OpenAI and Anthropic set different terms, and whoever holds the account answers for them.

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Facts as of Oct 18, 2026Last reviewed Oct 19, 20263 min read

[ MODELS ]

The short answer

For students under 18, the provider's terms decide part of the model list before any quality comparison starts. Google's standard API terms rule out Gemini in third-party products used by teens; OpenAI needs a parent's or guardian's consent; Anthropic allows teen use through businesses with safeguards.

Provider rules for minors

As of Oct 18, 2026, from each provider's terms. Not legal advice.

Provider	Rule for minors	What it means for a school product
Google (Gemini API, Google Cloud)	Terms bar services "likely to be accessed by individuals under the age of 18"; Google's teen route is Gemini for Education	A third-party school product cannot offer students Gemini under Google's standard terms
OpenAI	Consumer terms: 13 and older with a parent's permission. API agreement: no minors without a parent's or guardian's consent	A school product needs recorded guardian consent before OpenAI models reach a minor
Anthropic	Consumer Claude: 18 and older. Business customers may serve teens with safeguards such as age checks, moderation, a child-safety prompt, AI disclosure and a public compliance statement; Anthropic audits them	A school product can offer Claude models to teens if it meets those guidelines
OpenRouter (model router)	The account holder must make users follow each model's terms	Responsibility sits with whoever holds the account
Microsoft Copilot Chat	Students 13 and older; off by default for K-12	A Microsoft 365 option, separate from third-party products

AI provider terms for users under 18

Ask who holds the provider account

Whoever holds the provider account answers for its terms. OpenRouter, for example, makes the account holder responsible for users following each model's terms. When a vendor says "bring your own account," the school may become the provider's customer and carry the minors' terms itself. Ask every vendor whose account it is, and get the answer in the agreement.

Free and paid tiers are different models

Free ChatGPT runs on OpenAI's smallest Luna models; the $20-a-month Plus plan adds GPT-6 Sol reasoning. Model strength matters for accuracy: in a study of middle-school math explanations, GPT-4's were valid 94% of the time, against 10-43% for GPT-3.5. In one trial with undergraduates, feedback from free ChatGPT 3.5 lowered later grades compared with human feedback, while ChatGPT 4's did not.

A stronger model is not a better tutor by itself

Solving is not teaching. In one tutoring benchmark, a much stronger model solved far more problems than a weaker one but scaffolded about as well, and teaching instructions improved scaffolding more than raw strength did. In the two-year Khanmigo trial, engagement, not model quality, limited results: the median student messaged the tutor on a third of practice days. Without learning rules, a stronger model can make outsourcing easier.

A review for each model

Do the provider's terms allow users under 18 through a school product? On what conditions?
Does the provider train on the data, and how long does it keep it?
Has the vendor checked that the model follows each learning mode with real prompts?
What does a typical student's use cost per year on this model?
Which students get it, and what happens when it is not allowed for a student?

How Nexus handles it

Your school approves models for each class from Nexus's reviewed list, and staff can use the wider set your school approves. Before any pilot, our checklist confirms minors' model routing on the deployed build: no Google models for students, unreviewed providers off, OpenAI gated on recorded consent, and providers that collect data excluded.

[ FAQ ]

Questions and answers

Can students under 18 use Gemini through a school app?

Not through a third-party product under Google's standard terms, which bar services likely to be accessed by people under 18. Google's own teen route is Gemini for Education.

Can high school students use OpenAI models at school?

OpenAI's API agreement bars letting minors use its services without a parent's or guardian's consent, so a school product needs that consent recorded first.

Can students under 18 use Claude?

Not on consumer accounts, which require users to be 18 or older. Businesses can offer Claude models to teens if they follow Anthropic's guidelines for organizations serving minors.

Is the most powerful model the best choice for students?

Not by itself. Stronger models err less, but learning depends more on whether the student does the thinking and on the teaching rules the model follows.

[ SOURCES ]