Subprocessors
The companies that support Critique Studio, what each one does, and where it operates.
Last updated 8 August 2026 · Silicon Neuron LLC
Companies that can see student data
| Company | What they do | What they see | Where | Data retention |
|---|---|---|---|---|
| Supabase | Database, authentication and file storage | Everything the product stores: names, email addresses, uploaded work, grades, quiz answers | United States | Held only for our stated retention periods |
| Vercel | Web application hosting | Requests in transit. Stores no student work. | United States | Held only for our stated retention periods |
| Fly.io | Runs the AI grading worker and the document converter | Student work in transit and in memory while a grading job runs. Nothing is stored after the job. | United States (Ashburn, VA) | Held only for our stated retention periods |
| Resend | Sends account email — confirmations, invitations, password resets | Names and email addresses. Never student work or grades. | United States | Held only for our stated retention periods |
| xAI (Grok) | Grades student work | Student work being graded, and what it is graded against | United States | Zero data retention |
| Mistral AI Processing takes place in the European Union. | Grades student work | Student work being graded, and what it is graded against | European Union | Zero data retention |
Companies that never see student data
Listed so the boundary is on the record. The AI providers here support features where a teacher writes the material, and do not receive student work.
| Company | What they do | What they see | Where | Data retention |
|---|---|---|---|---|
| Course content and other material a teacher writes | Teacher-authored material only | United States | Not used for student data | |
| Anthropic | Course content and other material a teacher writes | Teacher-authored material only | United States | Not used for student data |
| OpenAI | Course content and other material a teacher writes | Teacher-authored material only | United States | Not used for student data |
| Stripe No student data ever reaches Stripe. | Payment processing | Teacher billing details only | United States | Held only for our stated retention periods |
What we run ourselves
Some parts of the service run on our own infrastructure, so no additional company is involved:
- Document conversion. Word and PowerPoint files are converted for viewing on our own infrastructure, not by an outside service.
Zero data retention
The AI providers that receive student work have agreed to keep nothing once the response is returned. We restrict student work to those providers only.
Other providers on this page support features where a teacher writes the material — course content, rubrics and images. They do not receive student work.
Questions, or a request
Schools evaluating us can ask for our data privacy agreement, our retention schedule, or written confirmation of any row above at privacy@critiquestudio.com.