AI voice devices for children: seven questions to ask before you buy
Before buying an AI speaker or voice toy for your child, ask seven questions: where does their voice go, is it recorded, where is the data processed, does the device refuse off-topic requests, does it hold open-ended conversations, what can you see as a parent, and how are updates handled. Here are our answers for KAÏDO, including the ones that are not perfect yet.
Why a device that listens deserves precise questions
An AI voice device is not a toy like any other: it hears your child’s voice, understands what they say and answers back. Depending on how it is designed, it can be a valuable companion or a chatty object that knows a lot about your family. The word “AI” on the box tells you none of this.
The seven questions below apply to any device: smart speaker, connected plush toy, audio game console or homework companion. A serious brand should be able to answer them in black and white.
- Where does my child’s voice go when they talk to the device?
- Is it recorded, and can it be played back?
- Where is the data processed, and by whom?
- Does the device refuse topics outside its purpose or unsuited to my child’s age?
- Does it hold open-ended conversations, with no limit on topic or length?
- What can I see as a parent, and can I delete everything?
- How is it updated, and who decides on those updates?
Our answers for KAÏDO, no corners cut
Here is, in the same order, what actually happens with KAÏDO today.
- The voice: during a session, it is sent encrypted to our voice engine, currently provided by OpenAI in the United States. The text of the exchange is also reviewed, without the child’s name, by teaching-quality tools hosted in the United States.
- Recording: KAÏDO never keeps your child’s audio, and the voice engine session is opened with storage switched off. There is nothing to play back.
- Data: your account data is never sold or used for advertising. Fully Europe-hosted processing is our goal; we are not there yet.
- Off-topic: KAÏDO sticks to homework and turns down off-topic requests. For anything outside its role, it points the child to their parents or their teacher.
- Open-ended conversation: there is none. KAÏDO is a tutor limited to homework time, and never presents itself as a friend.
- The parent: you receive a weekly picture made of learning markers, never the content of the exchanges. You can delete the account and its data at any time from the app.
- Updates: they are signed, checked by the sphere before installation, and never start during a session.
Check an AI voice device in three steps
1
Ask what happens to the voice
Is the voice recorded? For how long? Can it be played back, and who processes it? A vague answer, or no answer at all, already tells you something.
2
Test the off-topic
Ask the device to talk about something outside its purpose, or ask a question that is not suited to your child’s age. Watch whether it calmly steers back or gets carried away.
3
Check that you can erase everything
Find where account deletion and deletion of your child’s data are. If they are hard to find or come with conditions, be wary.
An AI that listens to your child should be able to answer your questions.
A voice device designed for one moment only: homework
KAÏDO is a screen-free sphere for ages 6-11, from 1st to 5th grade. A session starts when your child presses the button on the side of the sphere; KAÏDO answers by voice, and the light on its sides punctuates the exchange. Its role is narrow by choice: guiding the child through their exercise with questions, without ever giving the answer.
These seven questions are about the voice. To judge an educational AI as a whole, add the questions about its teaching frame, attention and parental control: an AI for children should pass both sets.
Your questions
How does my child know KAÏDO is listening?
Through the light on the sides of the sphere: it shows when KAÏDO is listening and when it is speaking. A session starts when your child presses the button on the side of the sphere, and KAÏDO sticks to homework from start to finish.
Does KAÏDO record my child’s voice?
No. The voice is sent to the voice engine during the session, and KAÏDO never keeps the audio: the voice engine session is opened with storage switched off.
Does KAÏDO’s data stay in Europe?
Not entirely yet, and we would rather say so: the voice goes through OpenAI’s voice engine in the United States, and the session text is reviewed, without the child’s name, by teaching-quality tools hosted in the United States. Fully European processing is our goal.
Can my child chat about anything with KAÏDO?
No. KAÏDO has no open-ended conversation: it sticks to homework, turns down off-topic requests and gently brings your child back to their exercise. For anything outside its role, it points them to you or to their teacher.
Can I listen back to what my child said?
No: the audio is never recorded, so there is nothing to listen back to. The parent app gives you a weekly picture made of learning markers on what was worked on, never the content of the exchanges. To reassure, not to monitor.
A voice device that answers parents too.
KAÏDO guides your child through homework, from 1st to 5th grade, with no screen and without ever giving the answer. KAÏDO's campaign is open on Ulule until 2 November 2026: pre-order your sphere, with 3 months of KAÏDO+ included.
€29.99 promo, instead of €49