most teacher AI apps are wrappers

Teachers do not need another app shelf. Most AI tools sold to schools are wrappers around the same models, and you do not have hours to test every shiny classroom add-on just to find out it saves you five minutes once.

I would start with the frontier models, the general-purpose AI tools that power most niche teacher apps anyway. Then I would add classroom-specific tools only when they solve a real problem better than the base model.

Video version: YouTube

Audio version: Podcast

Why frontier models matter

Before we get into the tools, a quick reminder: skills beat wrappers. Prompting, iterating, and checking sources transfer across almost every AI tool you will try. Once those habits are solid, the app choice gets much less dramatic.

Even with those skills, picking the right AI tool matters. For teachers, that means focusing on the frontier models.

For teachers, I would start with these three:

ChatGPT: the all-around default

You've probably used it. It's the most common AI, and for good reason. Its first draft often sounds generic. Projects and saved context help, but I still have to steer it.

Where it works

• Everyone knows it, including your students.
• OpenAI keeps adding more features to the free version.
• Advanced voice mode is great for real conversations and translation.
• The Windows and Mac apps let you skip the browser. The mobile apps are good too.

Where it gets annoying

• Even with the "search the internet" feature, it is not the search tool I reach for first.
• Honestly, the interface looks like engineers made it, not designers.
• The model names are long and confusing.

I would start with ChatGPT. It's a solid all-around tool and you probably already have it.

Google Gemini: the Google school pick

This one might be surprising. Early versions of Google's AI, back when everyone still called it Bard, were rough. Compared with those days, Gemini became the one I kept reaching for.

Where it works

• The writing is more natural and less "AI" than ChatGPT's first try.
• It handles images and different document types.
• If your school uses Google Workspace for Education, this is a must. Gemini is getting built into Docs, Gmail, Sheets, and Calendar.
• The voice mode is second only to ChatGPT.

Where it gets annoying

• You need to pay for Gems, Google's version of custom GPTs. They also are not shareable with others, unlike Custom GPTs.
• The "Deep Research" tool is cool but still needs work.
• Many people still remember the early, bad versions.

If you're in a Google school, Gemini belongs on the shortlist. Even if you're not, test it against what you already do in Google Workspace. The integration is the reason.

Perplexity: the search tool I would test first

Perplexity became the AI search tool I kept using after the test. I replaced Google Search with Perplexity in all my browsers and watched what happened to my normal search habits.

Where it works

• A paid Perplexity plan lets you compare multiple models inside one search interface instead of hopping between apps.
• The interface puts sources up front and keeps the page clean.
• The desktop and mobile apps are good, including searching from a picture on mobile.

Where it gets annoying

• Most teachers haven't heard of it.
• The free version is made for speed, not writing.

I would change your default search engine to Perplexity for a week and see what happens to your normal search habits.

Two I would re-test before recommending

This was my early-2025 read. I would re-test this section before treating it like a current ranking:

• Claude: Some people love it, especially coders and writers. I still would not start most teachers there unless they need artifacts or already like its workflow. The first three are easier classroom starting points.
• DeepSeek: DeepSeek is free and strong at reasoning, but there are problems. It shows its "thinking", but there are privacy concerns because the data goes through China, plus a strong pro-China bias if you ask about Taiwan. More importantly, Perplexity already has a US-hosted version of DeepSeek's R1 model without the same classroom privacy problem.

Where I would start

If I were advising a teacher in 2025, I would put the first week into ChatGPT, Gemini, and Perplexity. Claude and DeepSeek can wait: Claude is better for other lanes, and DeepSeek has too many classroom/privacy problems unless you are using it through something like Perplexity.

Try these apps in your actual work. Reading about them will not tell you much.

If you try one of these in a classroom and hit a weird edge case, send it over. That is usually where the useful part starts.