Greek live captions and productivity tool for lectures
For deaf and hard of hearing people.
coming soon
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Everything you need to follow Greek lectures
Four tools built for deaf and hard of hearing Greek speakers.
Follow the lecture as it happens
- Captions appear word by word while the lecturer is still speaking
- Works in lecture halls, seminars, and tutorials
- No setup — place the phone on your desk and start
- Any accent, any pace
For courses in another language
- Captions and translates in real time
- For international students or foreign-language courses
- 60+ languages, no switching
- Follow the lecture in the language you read best
Full transcript to study from
- Record the lecture and upload it for a complete written transcript
- Searchable, copyable, shareable
- Review at your own pace after class
- Works on any lecture recording
Key points extracted automatically
- Important concepts and takeaways pulled from any transcript
- Organised into sections — not one continuous block
- Useful for revision and exam preparation
- Works on any saved lecture transcript
Download for free
Download on theApp StoreEvery situation covered
Designed for the real moments that matter — not just quiet controlled environments.
Large amphitheatres at the University of Athens, Aristotle University of Thessaloniki, and Democritus University — Greek-medium instruction at academic pace. Captio AI captions the professor in real time.
Seminars and φροντιστήριο (tutorial sessions) where discussion moves between Greek and English. Captio AI handles both without manual switching.
Recorded lectures on university e-class portals or shared as video files — play on speaker and Captio AI captions whatever is playing in real time.
Study group sessions in Greek student accommodation reviewing lecture content. Captio AI captions whoever is speaking.
Guest lecturers from Thessaloniki or northern Greece whose Greek carries northern vowel reduction patterns. Captio AI handles standard and northern Greek varieties.
Online courses and webinars delivered by Greek universities. Captio AI captions any audio source in real time.
Most accurate and fastest models
word accuracy
independent benchmark, 2025
real-time captions
first word appears as you speak
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Built for the pace and pressure of a real lecture
Follow without splitting your attention
Lip-reading and note-taking at the same time is an impossible cognitive load. Captio AI handles the following so you can direct all your attention to understanding what is being said.
Captions while the lecturer is still speaking
Words appear on your screen as they are said — not after the sentence ends. You stay in sync with the lecture rather than always being a beat behind.
Works in any lecture setting
Lecture halls, seminar rooms, online classes, study groups. Place the phone on your desk, point it toward the audio source, and Captio AI handles the rest.
A full transcript to study from
Record the lecture and upload it to Audio Transcription after class. Get a complete written record you can search, annotate, and revise from — at your own pace.
60+ languages
For international students, students studying abroad, or courses taught in a second language. Captio AI captions or translates in real time with no manual setup.
No advance notice needed
Official university captioning requires booking in advance and is not available for every session. Captio AI works for any lecture, any time, with no prior arrangement.
Why Greek is hard to understand
Fricative clusters
- Greek consonant clusters /ks/, /ps/, /ft/ are produced at the back of the mouth
- Greek word-initial and word-medial clusters like /ks/ ('ξένος', stranger), /ps/ ('ψυχή', soul), and /ft/ ('φτάνω', arrive) involve velar or bilabial fricatives followed by stops — most of the acoustic event happens in the throat or on closed lips. In a lecture hall, these clusters produce brief or near-invisible lip movements at full pace.
Vowel reduction
- Unstressed Greek vowels reduce significantly — syllable shapes change at lecture speed
- Modern Greek reduces unstressed vowels in fast speech. The five-vowel system becomes less distinct in unstressed positions, and in northern Greek dialects unstressed high vowels /i/ and /u/ are sometimes deleted entirely. A deaf student tracking lip positions finds that the unstressed syllables of a Thessaloniki professor look different from what Athenian standard would predict.
Northern vowel deletion
- Northern Greek deletes unstressed vowels — words arrive shorter than a lip-reader expects
- Northern Greek dialects, including Thessaloniki and Macedonia, raise and delete unstressed /i/ and /u/ vowels. 'Κυρία' (Mrs.) may arrive as 'Κρία' — the unstressed vowel gone. For a deaf student calibrated to standard Athenian Greek, northern Greek faculty at Greek universities deliver word shapes with missing syllables.
Academic register shift
- Greek academic writing uses archaic forms read aloud in seminars
- Modern Greek academia shifted from Katharevousa to Demotic after 1976, but academic texts still contain archaic vocabulary and constructions read aloud in seminars and tutorials. These archaic forms produce word shapes that do not correspond to what a deaf student has learned from everyday colloquial Greek.
Dental fricatives
- Greek /θ/ and /ð/ reduce toward stop-like articulations in fast academic speech
- Greek dental fricatives /θ/ ('θάλασσα', sea) and /ð/ ('δρόμος', road) are produced with the tongue at or between the teeth. In careful speech they are partially visible; in fast academic Greek they reduce to near dental contact. A deaf student tracking these phonemes at lecture speed loses the distinction between fricative and stop in the dental position.
Download for free
Download on theApp StoreUp to 40,000 deaf and hard of hearing Greeks — with no official national count and no captioning at Greek universities
Greece estimates between 25,000 and 40,000 deaf and hard of hearing people among its population — but this figure comes from the Federation of the Deaf of Greece's own count of approximately 3,000 active members, not from a national registry. An official database of deaf and hard of hearing Greeks has never been created. A 2018 study in the Archives of Public Health (PMC6174559), which examined 140 DHH Greek adults, found that hearing loss consistently and significantly reduces health-related quality of life across mental health, social functioning, and general health dimensions — confirming the population carries a substantial quality-of-life burden that is rarely measured at the national level.
Research on health service access barriers in Greece found that 93% of deaf participants struggled to navigate the healthcare system, with difficulties booking appointments, limited administrative accessibility, and insufficient interpretation provision. Greek Sign Language (GSL) received official recognition in 2000, but sign language interpreters at Greek universities are not systematically provided. Students who are deaf or hard of hearing at the University of Athens, Aristotle University, or any Greek regional university must self-arrange any academic support, and live captioning does not exist as a standard university service.
Greece is one of the few EU member states without an official disability prevalence survey — people with hearing disabilities are, in the formal sense, not counted. They are present in lecture halls, navigating spoken Greek instruction in amphitheatres where the acoustics carry the professor's voice to hearing students and nothing reaches anyone who cannot hear. Captio AI captions Greek lecture speech in real time — in a University of Athens amphitheatre or an Aristotle University seminar room — making every session accessible without prior arrangement.
[1]HRQoL among deaf and hard of hearing adults in Greece — PMC6174559, 2018
[2]Barriers to health services among DHH adults in Greece — Archives of Public Health
[3]Deaf and hard of hearing individuals and education in Greece — special case of social exclusion
[4]GBD 2019 — Hearing loss prevalence and years lived with disability (PMC7960691)
Download for free
Download on theApp StoreWhat you hear stays with you.
Gone the moment it ends
Captio AI processes your audio in real time and discards it immediately. Nothing is recorded. Nothing is kept.
Not a product
Your conversations are not something Captio AI sells, shares, or monetizes — to anyone, for any reason.
Not used to train anything
What you say in a doctor's appointment or a job interview never ends up in a training dataset. Not ours. Not anyone else's.
Private by default
Download on theApp StoreCaptio AI supports 60+ languages
People love Captio AI
"Greek fricative clusters are produced at the back of the mouth — nothing visible on the lips. Captio AI transcribes acoustically. Athens lectures are accessible to me now."
"Thessaloniki Greek deletes vowels — words arrive shorter than I expect from the written form. Captio AI handles northern Greek correctly. Lectures are captions I can actually trust."
"No captioning service in Greece. No sign language interpreter for my faculty. Captio AI is the only live access I have to my lectures. It works every session."
"Academic Greek uses archaic vocabulary read from texts in seminars. The word shapes are unfamiliar from everyday speech. Captio AI gets the transcription right regardless of register."
"Greek fricative clusters are produced at the back of the mouth — nothing visible on the lips. Captio AI transcribes acoustically. Athens lectures are accessible to me now."
"Thessaloniki Greek deletes vowels — words arrive shorter than I expect from the written form. Captio AI handles northern Greek correctly. Lectures are captions I can actually trust."
"No captioning service in Greece. No sign language interpreter for my faculty. Captio AI is the only live access I have to my lectures. It works every session."
"Academic Greek uses archaic vocabulary read from texts in seminars. The word shapes are unfamiliar from everyday speech. Captio AI gets the transcription right regardless of register."
Download for free
Download on theApp StoreFrequently asked questions
Follow every lecture in Greek.
Captio AI is free to start
coming soon
Download for free
Download on theApp Store