Every student knows the feeling: you're stuck on an exam question, the clock is running, and every instinct says to open a new tab and search for the answer. The problem is that tab switch gets recorded, your quiz platform notices the exam page is no longer active, and you still have to sort through results to find something useful. The best AI for online exams in 2026 does not require you to leave the page at all. CaptureAI is a Chrome extension that answers any question in a floating panel on top of your exam. Press Ctrl+Shift+X, drag around the question, and the answer appears in about three seconds, with no tab switching required.
Why Most AI Tools Fall Short During Exams
Most students reach for a chat tool open in a separate tab. That approach has three problems:
- Tab switching is one of the most noticed behaviors on quiz platforms. Many platforms log when the exam page loses focus, and software that watches you during tests flags it right away.
- Copy-pasting from an exam page can be blocked outright. Retyping a 40-word question while the clock counts down introduces mistakes and costs time.
- A general chat tool gives a long response you have to read and summarize yourself, with no guarantee the answer applies to your specific question wording.
CaptureAI solves all three problems at once. It works entirely on the same page, reads the question from a screenshot so you never type or copy anything, and formats the answer directly for the question in front of you. For a detailed look at the full flow, read how CaptureAI works.
How CaptureAI Reads and Answers Exam Questions
When you press Ctrl+Shift+X, a transparent overlay appears over your screen. Drag a box around the question and release. Here is exactly what happens next:
- CaptureAI reads the question text from that screenshot on your own computer (the image almost never leaves your device)
- The text is sent to an AI that identifies the question type and writes a clear, explained answer
- The answer appears in a draggable floating panel on top of your current page within 2–4 seconds
- You read the answer, click outside the panel to close it, and keep going
Your exam page stays active and visible the entire time. There is no tab switch, no clipboard activity, and nothing unusual in how the page behaves from your quiz platform's point of view.
Step-by-Step: Setting Up and Using CaptureAI on an Exam
Before the Exam (Under 2 Minutes)
- Install CaptureAI from the Chrome Web Store
- Activate your license at captureai.dev/activate. Your license key arrives by email right after purchase
- If you are on Pro, open the extension settings and enable Privacy Guard before starting any monitored exam
- Open your exam page normally and begin
During the Exam
- When you reach a question, press Ctrl+Shift+X
- Drag to select the full question. Include all answer choices for multiple choice questions
- Wait 2–4 seconds for the answer panel to appear
- Read the answer and explanation
- Click anywhere outside the panel to dismiss it
Tip: Press Ctrl+Shift+F to instantly repeat the last capture area without drawing a new box. This helps when several questions share the same screen position.
Tip: Press Ctrl+Shift+E to toggle the floating panel on or off. One keypress and the screen looks completely clean if you need it to.
What to Capture for Different Question Types
- Multiple choice: select the full question and all answer options; the AI identifies the correct letter and explains the reasoning
- Short answer: select just the question prompt; the AI writes a concise, direct answer
- Math and science problems: select the full problem including any numbers, formulas, and conditions visible on screen; the AI works through every step
Pro Features That Make a Difference on Harder Exams
Privacy Guard
Many exam platforms run scripts in the background designed to catch study tools. Privacy Guard is a Pro-only feature that blocks those scripts from seeing anything unusual. Your activity log shows only normal browsing, tab switches are not recorded, and the scripts built to detect study tools stop working. The result is that CaptureAI is invisible at the platform level.
For the full guide on using AI on monitored quizzes, read How to Use AI on a Canvas Quiz Without Detection in 2026.
Auto-Solve Mode (Vocabulary.com only)
Auto-Solve Mode is a Pro feature that watches the page for new questions and answers them without you drawing a selection box. The site it currently supports is Vocabulary.com, which is useful if a class assigns word-list sets there. Every other quiz platform still uses the manual Ctrl+Shift+X capture flow.
Ask Mode (Pro)
The floating panel has a second mode hiding behind a small switch. Flip Ask Mode on and the panel becomes a typing surface. You write the question, optionally pin up to three images from your screen or device, and send. The output lands in the same panel the screenshot would have used. It is the right tool when you want to add context the AI cannot read from a picture: a worded comparison between two graphs, a scenario built on a paragraph of background, or a prompt where the phrasing itself is part of the question. Capture Mode (Ctrl+Shift+X) still runs on every plan, exactly as before.
Reasoning Mode (Basic and above)
Reasoning mode is a toggle that tells the AI to take extra time and double-check its work before answering. Off by default, since most questions don't need the extra wait. Turn it on for multi-step math, logic problems, or anything where precision matters more than the half-second of extra time.
For high-stakes exams where every point counts, turning it on is worth it.
Works on Every Platform
CaptureAI reads from your screen directly, so it works on any website your school uses, with no special connection to the platform required:
- Canvas: the most widely used exam platform at US colleges (full Canvas guide)
- Moodle: open-source platform common at universities worldwide
- Blackboard: still standard at many large institutions
- Top Hat: live in-class quizzes and participation questions
- Schoology: common in high school and K–12 courses
- Any website: if it shows on your screen, CaptureAI can read it
For tips on using AI on each of these platforms, read Canvas, Moodle & Blackboard: Tips Every Student Should Know.
Pricing: Free, Basic, or Pro
Free
- About a week of light, exploratory use on the starter usage allowance
- Capture, Quick Capture, Stealth Mode, and the persistent sidebar chat
- Quick + Standard models with the auto router
Basic: $1.99/week or $5.99/month
- About 10× more usage than Free
- Reasoning mode, agent mode, custom instructions
- Advanced models (
gpt-5.4,gemini-3.1-pro-preview,claude-sonnet-4-6,grok-4.20) - Works on all platforms
- No usage tracking of any kind
Pro: $3.49/week or $9.99/month
- Highest usage allowance and the most generous weekly budget
- Privacy Guard (blocks scripts designed to catch study tools)
- Auto-Solve Mode for Vocabulary.com word lists (hands-free; other platforms still use manual capture)
- Ask Mode: a switch on the floating panel that turns it into a custom-prompt surface with up to three image attachments
- Web search and fetch URL inside the sidebar agent
- Reasoning mode (on/off)
If you take monitored exams or work through long sessions, Pro is the right choice. For homework help and low-stakes quizzes, Basic covers most situations.
Not sure how to fit AI tools into your study routine? Read the AI homework helper complete guide and how to use AI to study smarter in 2026 for the bigger picture.
Start Using CaptureAI Today
Install CaptureAI from the Chrome Web Store and activate your license. The next time you hit a question you can't answer, press Ctrl+Shift+X and you will have a clear, explained answer in seconds, without leaving the exam page or switching tabs, and without anything looking unusual to your quiz platform.