Four AI features on every lesson — and when to reach for which

A lesson page on LearningBro now has four AI features sitting underneath the content. They're not four ways to ask the same question — they're four genuinely different study moves. Knowing which one to reach for, and when, is most of the value.

This post walks through what each one does, what it's for, and how it pairs with the others.

1. AI Tutor chat — the question you can answer in a sentence

The AI Tutor chat is a conversational tutor scoped to the lesson you're on. It can see the full lesson content. It can answer questions, explain wrong answers, walk you through worked examples, and cope with maths in LaTeX so the formulas render properly. It runs on Claude Haiku — fast, cheap enough that we can give every subscriber a generous daily quota.

Reach for it when: you've hit a specific point of confusion. "Why is this step using the chain rule?" "What does codominant mean here?" "Walk me through that worked example step by step." It's the workhorse — most students use this most.

It will not write your homework, your essay, or your coursework for you. It's instructed to refuse, and to redirect you to plan-the-answer mode instead.

2. Examiner Mode — your essay, marked sentence by sentence

When you've actually written an answer, the AI Tutor's job is over and Examiner Mode's job begins. Paste your question and your answer, set the maximum marks, and Examiner Mode plays the role of a senior examiner. It returns:

• Sentence-by-sentence commentary — which sentences picked up which marks
• An Assessment Objective breakdown — AO1, AO2, AO3, with awarded vs available
• Your current grade band and the band above it
• A list of "missing phrases" — concrete things your answer didn't do
• An examiner narration you can have read aloud

It runs on Claude Sonnet because sentence-level marking against a real exam-board rubric needs the more capable model. Like the chat tutor, it's available to subscribers (trial users see an upgrade prompt).

Reach for it when: you've finished an essay, a long-answer question, or a long-form working-out problem and you want to know what an examiner would actually award. Don't reach for it before you've written something — you can't mark a blank page.

3. Cross-Subject Synoptic Tutor — the prerequisite you forgot

This one launched today and it solves a different problem from the other two. The chat tutor answers the question you asked. Examiner Mode marks the answer you wrote. The Synoptic Tutor surfaces the question you didn't know to ask.

When the AI has identified that the lesson you're on uses a skill from another subject (or from GCSE while you're at A-Level), an indigo banner appears above the chat:

This lesson uses log laws from Maths A-Level. Want a 90-second recap before continuing?

Click it and the AI generates a focused recap of that one skill, framed for the lesson you're on, drawing from the actual source lesson content elsewhere on LearningBro. Voice narration optional. Dismissible per lesson.

Reach for it when: you don't yet know what's confusing you. The synoptic prompt lays out which prerequisites the lesson assumes — log laws, standard form, basic moles — and you can grab a 90-second refresher on whichever one feels rusty before you spend 20 minutes stuck on a question that's actually about the prerequisite, not the topic.

It's particularly powerful for the Y11→Y12 jump. A Y12 student looking at A-Level Physics capacitors needs GCSE standard form, basic algebra, and the V/I/R foundation from a year ago. The synoptic banner tells them that explicitly and offers to recap any of it.

For a deep dive on how this works under the hood, see the Synoptic Tutor launch post.

4. Voice mode — hands-free everywhere

Voice mode is built into both the Tutor chat and Examiner Mode. Tap the microphone in the chat panel to speak your question instead of typing it. Tap the speaker icon to have answers and examiner narration read aloud.

It's not a separate feature so much as a different input mode for the existing two. But it changes how you can study:

• Revision on the bus or in the kitchen, headphones in
• Working through a maths problem with the tutor reading the steps aloud while you write on paper
• Hearing an examiner narration walk through your essay without staring at another screen

It uses the browser's Web Speech APIs — no external service, no extra cost, no network round-trips for the speech-to-text or text-to-speech. Works wherever modern Safari, Chrome, or Edge work.

How they pair up

The four features compose:

• Stuck on a topic? AI Tutor chat
• Hit a wall but don't know why? Synoptic recap (it'll often surface the actual stuck point — a forgotten prerequisite)
• Written something and want it marked? Examiner Mode
• On the move? Tap the mic and speak instead of type

The student journey for a Y12 working through a hard A-Level physics question typically looks like: open the lesson → spot a synoptic recap is offered → 90-second refresher on log laws → ask the chat tutor for help with the specific worked example → write a full answer → run Examiner Mode → adjust → run again.

That's a complete revision loop in a single page. No tab-switching, no logging into a separate app, no "let me find a youtube video on log laws".

Pricing and tier

All four features are part of the standard LearningBro subscription. Trial users see an upgrade message on Examiner Mode and the Synoptic Tutor; the Tutor chat is available to trial users on a smaller daily budget.

Where to start

Open any A-Level STEM lesson — the Synoptic Tutor banner is most likely to fire there. Try one of these to see all four in action:

• Edexcel A-Level Physics: Electric and Magnetic Fields — Capacitors
• Edexcel A-Level Chemistry: Kinetics and Equilibrium — Collision Theory and Rates of Reaction

Or jump in at any A-Level course and start clicking around.