The API for AI Marking
Co-Pilot for Marking®. Examiner-grade marking and feedback, white-label, built for EdTech platforms, training providers, and awarding bodies.
Accuracy where it matters most
Features
We've built the marking infrastructure we wished we'd had as examiners. Designed for the EdTech platforms, training providers, and awarding bodies integrating AI marking into their own products, without losing the standards a candidate complaint or a regulator's audit will be measured against.
Examiner-grade marking, as an API
Drop-in API
Integrate examiner-grade marking into your platform in days, not quarters. RESTful, well-documented, built for production from day one.
Consistent and defensible
Co-Pilot for Marking® applies the same mark scheme criteria to every response, with full traceability back to those criteria. Calibrated by examiners, auditable end-to-end.
Detailed feedback responses
Return detailed, criteria-anchored feedback to your learners alongside the mark. Calibrated to your mark scheme, in your voice if you need it.
Adaptable
Free-text, mathematical workings, handwriting, diagrams. Any subject, any mark scheme. Tell us what you need marked.
Contact UsHow It Works
Four steps to faster, fairer marking
Built around how examiners actually work
Upload
Submit student responses - handwritten scans, typed text or digital submissions
Analyse
AI evaluates responses against your mark scheme criteria in seconds
Review
Confidence scoring flags edge cases for human oversight when needed
Results
Detailed marks, feedback, and insights delivered instantly
Upload
Submit student responses - handwritten scans, typed text or digital submissions
Analyse
AI evaluates responses against your mark scheme criteria in seconds
Review
Confidence scoring flags edge cases for human oversight when needed
Results
Detailed marks, feedback, and insights delivered instantly
"After twenty-five years as a chief examiner, I've watched markers be asked to do the impossible. Be fast. Be fair. Be consistent across thousands of scripts. Vision Marker does the part a human shouldn't have to, so the examiner can focus on the part only they can."
Barry Lambert Chief Examiner & Co-Founder
About Us
Barry & James
A father-and-son team building the marking infrastructure they wished they'd had. Barry brings 35 years of teaching, 25 of them as a Chief Examiner. James holds a PhD in Machine Learning and statistics. Together, they've built Co-Pilot for Marking® on examining expertise and AI research in equal measure.
Latest thinking
Notes on building marking systems that can be trusted.
What Co-Pilot for Marking® actually means
Why Co-Pilot for Marking® means marks, rationale, confidence, cohort signals, and evidence-led oversight rather than a black-box grade.
Read the articleFAQ
Here are the answers to the most frequently asked questions
Our Co-Pilot for Marking® uses advanced AI to automate exam marking, providing accurate, consistent results in seconds. It handles text responses, mathematical workings, and handwritten scripts across any subject or mark scheme.
Talk to us about integrating Vision Marker
A 20-minute conversation, no pitch deck. We'll walk through what your mark schemes look like, how the API fits, and what a pilot looks like.
Get in touchAI-Powered
Marking Solutions
Contact Us
We reply within 24 hours on weekdays.
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