Zense AI vs Sayo
Last updated Nov 2, 2026
Zense AI and Sayo are both AI platforms for Hong Kong primary and secondary schools. Here's how they compare on AI marking, AI tutors, data protection, plans and the AI for ELTFP grant. Everything about Sayo on this page comes from Sayo's own website.
Quick comparison
| Zense AI | Sayo | |
|---|---|---|
| Company | Zense Technology Limited, Hong Kong | Sayo AI Limited, Hong Kong |
| What you get | One platform with six tools: Chat, Tutors, Classroom, Assignments, Live class, Tools & Apps | Sayo Academy, plus subject platforms for English, Chinese, Maths, Putonghua and ICT |
| AI marking | AI marks the first round, handwriting included, and the teacher reviews it | AI Marker suggests scores from the teacher's marking scheme, and the teacher reviews every mark |
| AI tutors | Teachers build subject tutors from their own materials, available to students 24/7 | A 24/7 AI tutor that guides students' thinking |
| Data protection | Follows the PDPO; school content is never used to train AI models | Follows the PDPO; SOC 2 and ISO 27001 certified infrastructure; school data is never used to train public AI models |
| Schools | 30+ secondary schools through the AI for Science Education Funding Programme with HKU | 200+ partner schools, 2,000+ educators and 100,000+ active students |
| Plans | Free, Pro and Max for individuals; school plans quoted per school | Free, Basic and Pro for individuals; custom Organization plan |
| AI for ELTFP | Schools can use the grant for Zense AI | Up to HK$500,000 for Academy and subject tools in aided schools |
About Zense AI
Zense AI is built in Hong Kong by Zense Technology Limited, founded in 2024. Teachers and students use one account for everything:
- Chat with GPT, Claude, Gemini, DeepSeek and Qwen. Auto mode picks a model for each question.
- Tutors that teachers build from their own notes and worksheets.
- Assignments with AI first-round marking, including handwritten answers.
- Live class, where teachers see each student's AI chats during the lesson and risky messages are flagged in real time.
- Private AI on the school's own servers, for schools that need it.
- Face-to-face teacher training, plus AI and STEAM courses.
Schools that have worked with Zense AI include Fukien Secondary School, United Christian College (Kowloon East) and Sham Tseng Catholic Primary School. Partners and customers include The Chinese University of Hong Kong, Hong Kong Baptist University, NVIDIA and Samsung. See pricing for current plans.
About Sayo
Sayo is made by Sayo AI Limited. Its main product, Sayo Academy, is a teaching workspace for Hong Kong schools:
- AI Marker suggests scores using the teacher's question paper and marking scheme. Teachers review every mark before students see it.
- Worksheets and slides generated in Sayo Chat, and Sayo Apps teaching mini-games.
- Classrooms and a 24/7 AI tutor for students.
- Subject platforms: Sayo English (HKDSE English Papers 1–4), Sayo Speak, 墨韻 for Chinese, Sayo Mathematics, Sayo PTH and Sayo ICT.
- The Organization plan includes SSO, LMS integration, admin analytics, a dedicated success manager and custom onboarding.
Sayo's partner schools include Queen's College, King's College and St. Stephen's College. See Sayo pricing for current plans.
Which is right for your school?
Both let you start for free, so the simplest way to decide is to try each with a real class. It helps to check:
- which subjects and HKDSE papers you need covered
- how teachers review AI marks
- what training comes with a school plan
- how the plan fits your AI for ELTFP budget
Want to see Zense AI with your own materials? Email enquiry@zenseai.io or call +852 5328 1381.
Sayo details are from sayo.ai, Sayo products and Sayo pricing, checked on 2 November 2026. Sayo is a name used by Sayo AI Limited, and Zense AI is not affiliated with Sayo AI Limited. If anything here is out of date, email enquiry@zenseai.io and we'll fix it.
