Sub-Processors
Is-broseswyr
Last updated: March 2026
Capsiynau uses the following third-party providers (sub-processors) to deliver the platform. Each provider processes data only to the extent necessary to perform their specific function.
We review our sub-processors regularly and require all providers to maintain appropriate security and compliance standards.
Infrastructure & Hosting
| Provider | Purpose | Data Processed | Location |
|---|---|---|---|
| Vercel | API and web application hosting | Request data, session tokens | Global edge network |
| Supabase | Database, authentication, realtime | User data, transcripts, projects | EU / USA |
| Cloudflare R2 | Media file storage | Uploaded audio and video files | EU / USA |
| Railway | Background transcription worker | Audio files, transcript data | USA |
| Upstash | Job queue (Redis) | Job IDs and processing metadata | EU / USA |
AI & Transcription
| Provider | Purpose | Data Processed | Training Opt-Out |
|---|---|---|---|
| OpenAI | Transcription (Whisper, GPT-4o) and translation | Audio files, transcript text | ✅ Yes |
| AssemblyAI | Speech transcription | Audio files | ✅ Yes |
| Anthropic | Caption refinement and analysis | Transcript text | ✅ Yes |
| Google Cloud | Welsh speech-to-text (Chirp 2) | Audio files | ✅ Enterprise configuration |
Business Operations
| Provider | Purpose | Data Processed | Location |
|---|---|---|---|
| Stripe | Billing and payment processing | Payment and billing information | USA / EU |
| Resend | Transactional email | Name, email address | USA |
Changes to Sub-Processors
We will notify customers of any significant changes to our sub-processor list with reasonable advance notice. Customers who object to the addition of a new sub-processor may terminate their subscription in accordance with the terms of service.