BuildSpark AI

Map · Ship & Maintain · 06 · Privacy & data handling

Concept card · Ship & Maintain

Privacy & data handling

Privacy and data handling is deciding what enters a prompt, what the provider stores, and what should never be sent.

What you send, what is stored, and what should never enter a prompt.

Last checked 2026-10-18 Free card 5 min

Ask about Privacy & data handling

What changed

Oct 18: First card. The picture separates a field the question needs from identifiers you can leave out. Sources are OpenAI's data controls and Anthropic's API data-retention page.

1 What it is

What you send and what is stored are different questions, and the answers depend on the product and the agreement. OpenAI's data controls page says that, as of March 1, 2023, data sent to the OpenAI API is not used to train or improve OpenAI models unless you explicitly opt in. The same page says abuse-monitoring logs may contain prompts and responses and are retained for up to 30 days by default, unless the law or harm prevention requires longer. Those 30 days are vendor-reported. Zero Data Retention is a separate control that needs approval, and some endpoints still store application state when it is on. Anthropic's API data-retention page says prompts and outputs are not retained by default, with an exception for Covered Models, which require 30-day retention, and that retained data is not used for model training without express permission. If a chat is flagged, Anthropic says it may keep inputs and outputs for up to 2 years. Those periods are vendor-reported. On Amazon Bedrock and Google Cloud's Agent Platform, Anthropic says the cloud provider is the data processor. Read the page for the product you call.

Illustration. A made-up ticket. It is not a claim about what your account stores today.

Question: When does the north warehouse close?

Hours questionWhen does the north warehouse close?

Emailada@example.com

AccountAccount 44019

The picture sends the email and the account number. The close-time question does not need them.

2 Why it matters

Cost

Leaving an email address out does not change the token rate. It removes those tokens from the prompt. This card does not add a price.

Quality

A prompt that includes an account number can sound more specific, and it can also put that number into a log. Ask whether this question needs the field.

Risk

A line that says prompts are not used for training is not the same as a line that says nothing is stored. OpenAI and Anthropic both describe retention for safety review and, on some features, so the product can work. Zero-retention arrangements have exceptions those pages list.

3 How to apply · try today

Take one real prompt. Mark anything you would not paste into a shared document: names, emails, account numbers, health details. Delete what the question does not need. Write down which provider page you checked for retention, and the date.

Common mistake

Pasting a full customer record because the model might find it useful. Send the field the question needs.

Self-check

Does "not used for training" mean the provider keeps nothing?

Questions

What is privacy and data handling?
Privacy and data handling is deciding what enters a prompt, what the provider stores, and what should never be sent.
Are OpenAI API prompts used to train models by default?
OpenAI's data controls page says that, as of March 1, 2023, API data is not used to train or improve models unless you explicitly opt in. The same page still describes abuse-monitoring logs.
Does Anthropic keep every API prompt for 30 days?
Anthropic's API data-retention page says prompts and outputs are not retained by default, with an exception for Covered Models, which require 30-day retention. A flagged chat may be kept for up to 2 years. Those periods are vendor-reported.