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What OpenAI is built with
OpenAI publishes a sub-processor list for customer data under its Data Processing Agreement. Enterprise, API, and business ChatGPT tiers rely on multiple cloud and CDN vendors, not a single region or provider.
OpenAI sub-processor listLast reviewed on this site: September 21, 2026. The vendor table below is a summary; the linked document is authoritative.
Web technology profile
Detected on openai.com via the BuiltWith Free API. This reflects the public marketing site and product web stack, not backend training infrastructure.
Web technology profile not synced yet. Run npm run sync-builtwith after adding BUILTWITH_API_KEY to .env.local.
Legal sub-processors
Vendors from trust centers and DPA annexes (customer data processing). This is separate from the BuiltWith web tech scan above.
| Vendor | Category | Purpose | Type |
|---|---|---|---|
| Amazon Web Services | Cloud infrastructure | API, ChatGPT Enterprise, Edu, and Business workloadsRegions: United States (listed regions vary by product) | Proprietary |
| Microsoft Azure | Cloud infrastructure | API and business ChatGPT hostingRegions: Multiple countries per OpenAI listing | Proprietary |
| Google Cloud Platform | Cloud infrastructure | API and business ChatGPT hostingRegions: Finland, Japan, Netherlands, Norway, UK, US | Proprietary |
| Oracle Cloud Infrastructure | Cloud infrastructure | API and business ChatGPT hostingRegions: Brazil, Japan, Malaysia, Netherlands, UK, US | Proprietary |
| CoreWeave | Cloud infrastructure | GPU cloud for API and business productsRegions: Norway, Spain, Sweden, UK, US | Proprietary |
| Cerebras | Cloud infrastructure | Compute for API and business productsRegions: US, Canada | Proprietary |
| Cloudflare | CDN / edge | Content delivery and web hosting near end usersRegions: Edge locations (closest to user) | Proprietary |
| Snowflake | Data platform | Data warehousing for API and business productsRegions: United States | Proprietary |
| TaskUs | Support operations | Customer support processingRegions: Philippines | Proprietary |