Chiasm vs Pupil Core
Chiasm
chiasm.euPupil Core
pupil-labs.comSide by side
| Figure | Chiasm | Pupil Core |
|---|---|---|
| Price from | €199/mo | — |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | Yes | Yes |
| Plans published | 4 | 1 |
| Spec score · Eye Tracking Software | 8.4 (#1) | 7.7 (#14) |
| Headquarters | Amsterdam, The Netherlands | Berlin, Germany |
| Integrations | Chiasm integrates through a JavaScript library with Qualtrics, jsPsych and custom web studies. | Pupil Labs lists Python, iMotions, Lab Streaming Layer, PsychoPy, MATLAB and Octave among compatible tools; its real-time API streams gaze data and scene video over a local network. |
| Intended users | The service is for business, professional, academic, institutional or organisational use and is not intended for consumers using it personally. | Pupil Labs describes Pupil Core as an open platform used by a global community of researchers for diverse research purposes. |
| Purpose | Chiasm captures gaze data from participants’ webcams for online studies and research. | Pupil Core combines a wearable eye-tracking headset with an open-source software suite for eye-tracking research. |
| Support | Standard technical support is best effort and includes bug fixes, platform-use assistance, documentation and general guidance; study-design advice and data analysis are excluded. | Pupil Labs offers community and expert help, including tailored research workflows and training. |
Plans
In their own words
Chiasm
Chiasm captures gaze data through participants’ webcams for remote online studies and research. It processes webcam frames in real time and produces timestamped gaze coordinates linked to study events, together with session metadata. Researchers can connect it to Qualtrics, jsPsych, or custom web studies through a JavaScript library. Chiasm says studies can include hundreds of participants at once. Researchers can download gaze data from Chiasm or stream it to their own server; when used with platforms such as Qualtrics, data is held on Chiasm’s servers for later export. Webcam video is not stored by default, though limited calibration or validation recordings may be retained with explicit opt-in consent. The service supports Google Chrome on laptops and desktop computers with webcams. Flex has no monthly minimum and costs €0.25 per minute. Starter is €199 per month with 900 participant-minutes included, and Pro is €499 per month with 3,000 participant-minutes included. A 7-day trial is listed.
Pupil Core
Pupil Core has no write-up on Specifiction yet; its figures are above.