Zero data retention is a vendor promise that your prompts and files are not stored after the AI returns its answer and are not used for training. It matters when you paste candidate resumes, interview notes or client details into an AI tool.
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A vendor promise that your prompts and files are not stored after the answer is returned and are not used for training. It matters when you paste candidate details into an AI tool.
By default, many AI services keep prompts and outputs for a period, often to monitor abuse, debug issues or improve models. Zero data retention, sometimes shortened to ZDR, removes that storage. The data is processed to produce the answer and then discarded. It is usually offered on enterprise or API agreements, sometimes only after approval, and rarely on consumer plans.
The term is not standardized, so read the details. Some vendors keep nothing; others keep limited logs for safety review or keep data briefly in memory. It may also apply only to the model call, while the recruiting app built on top still stores your chat history, files and outputs in its own database. Ask which layer the promise covers.
Why it matters to recruiters
Candidate data is personal data, and privacy laws such as GDPR and US state privacy laws put duties on how you share and keep it. Clients may also restrict where their information goes. Choosing tools with clear retention terms reduces the risk of a data leak, simplifies answering deletion requests and makes security reviews from enterprise clients easier to pass.
An example from a recruiting desk
Summarizing interview transcripts with AI is the plan at one recruiting firm. Its biggest client's security questionnaire asks where candidate data is processed and stored. The firm switches to a plan with written zero data retention at the model provider and confirms its note taking tool deletes raw transcripts after 30 days. It can now answer the questionnaire in one page.
Tips that help
Get the retention promise in the contract or data processing agreement, not just a sales email.
Ask whether the promise covers the app layer as well as the AI model provider.
Check whether abuse monitoring logs are still kept and for how long.
Prefer tools that let you set your own retention period for stored records.
Mistakes to avoid
Assuming a business plan means zero retention when it only means no training on your data.
Forgetting that your own exports, chat history and ATS notes still hold the data.
Frequently asked questions
Is no training on my data the same as zero data retention?
No. No training means your data will not be used to improve models, but it may still be stored for days or longer. Zero data retention means it is not kept after the response. Many plans offer the first without the second.
Do consumer ChatGPT or Claude plans offer zero data retention?
Generally not. Consumer and small team plans keep chat history and may keep data for safety review. Zero data retention is typically an enterprise or API arrangement. Check each provider's current terms, as these change.
Does zero data retention make a tool GDPR compliant?
It helps but does not settle it. GDPR also covers lawful basis, transparency, transfers outside the EU and candidate rights. Retention is one part. This is not legal advice; check with counsel for your situation.
