Student
A safe, focused exam environment.
Logs in with an assigned ID, draws a topic, prepares, then answers the virtual examiner out loud.
Working pilot
Parallel oral examinations with a virtual examiner
AI is a problem for take-home work – but a huge help in oral examinations.
- Many students
in parallel - Teachers stay
in control - Transparent
and verifiable
Three roles, one examination system
Supervisor
A live overview of the whole room.
Sees where everyone is, how much time is left and who needs help.
Teacher
Structured analysis, retrievable answers.
Approved topics, weighted requirements and analysis backed by quotes.
Illustration with fictional data; interface translated – exams currently run in Hungarian.
Why now?
Take-home work no longer proves knowledge. An oral answer does.
In the age of generative AI it is increasingly hard to tell from a well-written essay whether its author truly understands the concepts, can explain connections and apply what they learned. In an oral exam, students have to account for their knowledge there and then, in their own words.
With large cohorts this would take an enormous amount of teaching time. Polibeli solves the capacity problem: it runs individual exam sessions in parallel, while the institution keeps control of the curriculum, the requirements and the final decision.
Thirty to forty individual oral exams in one room – each one built on the student’s own line of thought.
Knowledge becomes verifiable when it is spoken.
The Polibeli virtual examiner keeps oral exams personal, fair and professionally reliable even at scale – under teacher control.
- 01
Topic draw
The student picks from face-down cards; the server assigns the topic at random. One draw only.
- 02
Preparation
A separately configured preparation time with the topic always visible. Students who are ready can start early.
- 03
Answer
A self-directed exposition, then targeted follow-up questions. The system records the answer and produces a transcript.
- 04
Teacher’s decision
The teacher decides on the grade based on the per-requirement analysis, the transcript and the report.
One room, many individual exams
30–40 students at once – each with their own examiner.
Every student sits at their own laptop with headphones and a microphone. The examiner appears on screen as a restrained, continuously looping video; students hear each question in their headphones and read the same text on screen.
- 30–40
- laptops in one exam room
- 1
- supervisor view for the whole room
- 20–30
- topic cards fit on one screen
- ~2 s
- refresh of the supervisor overview
Two exam modes
Students choose: with notes or speaking only.
+
With notes
During preparation students can type their own outline and reopen it while answering; while speaking they see the recognised text of their answer. The outline is not assessed – the live answer is always spoken.
+
Speaking only
Mouse and microphone only, with no note field. Students speak to the examiner and move on with a few large, unambiguous buttons. The interface shows that the microphone works and recording is running; the transcript is shown once the exam is closed.
Documented answers
Retrievable evidence, transparent assessment.
For every answer, the question-and-answer transcript, the per-requirement analysis and the event log are available in one place. The audio recording is stored separately on the server.
- Demonstrated, partially demonstrated, not demonstrated and needs-review items – positive findings come with a quote and a rationale.
- Weighted content coverage, not an automatically assigned grade.
- A downloadable, structured PDF report with student and topic data, the analysis, the transcript and the events.
Teacher control
The AI asks. The teacher decides.
Approved topics only
The system can draft a proposal from the source material, but it never approves anything automatically. Only teacher-checked topics can be drawn in a live exam.
Weighted requirements
Essential, expected and supplementary knowledge with different weights. Follow-up questions move towards the heavier requirements that are not yet demonstrated.
Fair questioning
It does not re-ask knowledge already shown, does not hint at answers, and does not assess accent, speaking pace or confidence.
A fixed yardstick
Each exam session works from the curriculum captured at login: later edits never change the yardstick of an exam that has already started.
Where we are
A working system, introduced responsibly.
Built and working
- Student, supervisor and teacher interfaces
- Video examiner and Hungarian examiner voice
- PostgreSQL storage and PDF report
- Six sample subjects with 24 topics – replaceable with the institution’s own material
Before institutional roll-out
- A room test with 30–40 real headsets
- Per-subject calibration of the assessment
- Alignment with the institution’s data protection and exam regulations
How does an exam work with Polibeli?
The student logs in with an assigned ID and starts with a device check: listening to a test sentence, checking the microphone and confirming the recording notice. Then the student draws a topic from face-down cards, prepares and answers out loud. The answer starts with a self-directed exposition, followed by targeted follow-up questions. Closing the exam requires a separate confirmation.
Who asks the questions: a person or a machine?
The virtual examiner asks the questions. It appears on screen as a restrained, continuously looping video; the student hears each question in the headphones and reads the same text on screen. A supervisor is present in the room, and the final grade is decided by the teacher.
Does the system assess accent or confidence?
No. The examiner focuses on content: it does not assess accent, speaking pace or confidence, does not hint at answers, and does not re-ask knowledge that was already properly demonstrated.
Who defines the topics and requirements?
The institution’s teachers. Each topic can have a task, source material, an expected answer and detailed assessment criteria. The system can draft a proposal from the source material, but never approves anything automatically: only teacher-checked topics are used in live exams.
What equipment does an exam room need?
One laptop per student with a supported Chrome or Edge browser, a headset with microphone and a stable network connection. The system runs in the browser and needs no installation. Before institutional roll-out we recommend a room test with 30–40 real headsets.
Get in touch
Request a pilot demo
See how the Polibeli virtual examiner can fit into your university’s processes.
Request a pilot demo