How many subprocessors does Writer use?

Writer lists 20 subprocessors on its published list, including Amazon Web Services, Baseten, Cloudflare, Daytona, and Elastic Cloud and 15 more.

Where does Writer process customer data?

The subprocessors named by Writer are located in United States, European Union, and Worldwide, as stated on its list.

Does Writer use customer data to train AI models?

According to its terms of service, Writer does not use customer data to train AI models: “We will not use your Materials to train our models.”

How quickly does Writer report a personal data breach to customers?

According to its DPA, Writer reports a personal data breach to customers without undue delay, with no set deadline: “Writer will notify Customer of any Security Incident without undue delay or within the time period required under Data Protection Laws.”

How much notice does Writer give before adding a subprocessor?

Writer's DPA gives 14 days' notice of a new subprocessor, the time customers have to object: “Customer has fourteen (14) calendar days from such notice to make an objection on reasonable grounds relating to the protection of the Personal Data by notifying Writer at [email protected].”

How does Writer transfer personal data outside the EU?

Writer's DPA relies on standard contractual clauses and the EU–US Data Privacy Framework: “To the extent Writer processes Personal Data originating from the EEA, United Kingdom, or Switzerland and Writer is self-certified under the Data Privacy Frameworks, Writer will adhere to the Data Privacy Principles with respect to Personal Data transferred to Writer, as applicable.”

When was Writer's subprocessor list last checked?

ClauseTrail last checked Writer's subprocessor list on September 26, 2026. Lists are re-checked daily.

How do I find out when Writer adds or removes a subprocessor?

ClauseTrail monitors Writer's subprocessor list, DPA, privacy policy and terms and emails you the exact change — who was added or removed and what the page said before and after. The first vendors are free.

Writer Subprocessors List (September 2026): Changes and History

Writer names 20 subprocessors on its published list. Read from the vendor's own page and re-checked daily.

Last checked September 26, 2026 Official source ↗

Writer subprocessors (September 2026)

#	Subprocessor	Purpose	Location
1	Amazon Web Services	Cloud Service Provider	United States, European Union
2	Baseten	Infrastructure	United States
3	Cloudflare	Infrastructure	Worldwide
4	Daytona	Infrastructure	United States, European Union
5	Elastic Cloud	Infrastructure	United States
6	Fullstory	Analytics	United States
7	Google Cloud Platform	Cloud Service Provider	United States, European Union
8	Microsoft (Azure)	Infrastructure	United States
9	Omni	Analytics	United States
10	OpenRouter	Infrastructure	United States
11	Parasail	Infrastructure	United States, European Union
12	Pylon	Customer Support	United States
13	Recall.ai	Services and Support	United States, European Union
14	Segment	Analytics	United States
15	Sendgrid	Email Communications	United States
16	Snowflake	Data warehouse	United States
17	Stripe	Billing	United States
18	Tavily	Web Search	United States
19	Together.ai	Infrastructure	Worldwide
20	Writer, Inc. affiliates	Services and support	Worldwide

Get an email when Writer changes its subprocessors

ClauseTrail re-checks this list every day and tells you exactly who was added or removed — including when a vendor starts sending data to an AI provider. The first vendors are free.

Track Writer free

AI and customer data at Writer

What Writer's own documents say, with the sentence each answer comes from.

Trains AI models on customer data: No

“We will not use your Materials to train our models.”
Terms of service, writer.com ↗
Sends customer data to AI model providers: Not stated in the documents we track.
How to opt out: Not stated in the documents we track.

Key DPA terms at Writer

What Writer's data processing agreement commits to, with the sentence each answer comes from. SCCs or the Data Privacy Framework: what's the difference?

Breach notification: Without undue delay, with no set deadline

“Writer will notify Customer of any Security Incident without undue delay or within the time period required under Data Protection Laws.”
DPA, writer.com ↗
Notice of a new subprocessor: 14 days ahead

“Customer has fourteen (14) calendar days from such notice to make an objection on reasonable grounds relating to the protection of the Personal Data by notifying Writer at [email protected].”
DPA, writer.com ↗
Transfers outside the EU: Standard contractual clauses and the EU–US Data Privacy Framework

“To the extent Writer processes Personal Data originating from the EEA, United Kingdom, or Switzerland and Writer is self-certified under the Data Privacy Frameworks, Writer will adhere to the Data Privacy Principles with respect to Personal Data transferred to Writer, as applicable.”

“To the extent legally required, by entering into this DPA, Customer and Writer are deemed to have signed the EU SCCs, which form part of this DPA”
DPA, writer.com ↗
Customer data after the contract ends: Deleted or returned when the contract ends

“Writer will, at the choice of Customer and upon Customer's written request return to Customer and/or delete all Personal Data, unless Data Protection Laws require Writer to retain Personal Data.”
DPA, writer.com ↗
Audit rights: Once a year

“Customer may request an Audit upon fourteen (14) days' prior written notice to Writer, no more than once annually, except, in the event of a Security Incident occurring on Writer's systems, in which case Customer may request an Audit within a reasonable period of time following such Security Incident.”
DPA, writer.com ↗

Documents we track for Writer

DPA: checked September 26, 2026 writer.com ↗
Privacy policy: checked September 26, 2026 writer.com ↗
Subprocessor list: checked September 26, 2026 writer.com ↗
Terms of service: checked September 26, 2026 writer.com ↗

Change history

Tracking since September 26, 2026. No change has been published since; additions, removals and document changes will appear here as they're published.

Writer subprocessors FAQ

How many subprocessors does Writer use?: Writer lists 20 subprocessors on its published list, including Amazon Web Services, Baseten, Cloudflare, Daytona, and Elastic Cloud and 15 more.
Where does Writer process customer data?: The subprocessors named by Writer are located in United States, European Union, and Worldwide, as stated on its list.
Does Writer use customer data to train AI models?: According to its terms of service, Writer does not use customer data to train AI models: “We will not use your Materials to train our models.”
How quickly does Writer report a personal data breach to customers?: According to its DPA, Writer reports a personal data breach to customers without undue delay, with no set deadline: “Writer will notify Customer of any Security Incident without undue delay or within the time period required under Data Protection Laws.”
How much notice does Writer give before adding a subprocessor?: Writer's DPA gives 14 days' notice of a new subprocessor, the time customers have to object: “Customer has fourteen (14) calendar days from such notice to make an objection on reasonable grounds relating to the protection of the Personal Data by notifying Writer at [email protected].”
How does Writer transfer personal data outside the EU?: Writer's DPA relies on standard contractual clauses and the EU–US Data Privacy Framework: “To the extent Writer processes Personal Data originating from the EEA, United Kingdom, or Switzerland and Writer is self-certified under the Data Privacy Frameworks, Writer will adhere to the Data Privacy Principles with respect to Personal Data transferred to Writer, as applicable.”
When was Writer's subprocessor list last checked?: ClauseTrail last checked Writer's subprocessor list on September 26, 2026. Lists are re-checked daily.
How do I find out when Writer adds or removes a subprocessor?: ClauseTrail monitors Writer's subprocessor list, DPA, privacy policy and terms and emails you the exact change — who was added or removed and what the page said before and after. The first vendors are free.