Anthropic API

A clean default: no training on your data

The Anthropic API's data posture is one of the simplest to reason about: customer inputs and outputs are not used to train Anthropic's models, full stop. There is no opt-out toggle to forget because there is no opt-in. This makes it a low-friction choice for teams that need a defensible answer to "where does our data go?"

Practical implications

• You keep ownership of outputs under the Commercial Terms. Standard restrictions apply: do not use outputs to develop a competing model.
• Anthropic retains data briefly for trust-and-safety purposes; for stricter needs, Zero Data Retention is available to qualifying customers on request.
• The Usage Policy is comparatively strict on high-risk use cases. If you operate in a sensitive domain, read it before committing — enforcement is real.

When to choose it

Choose the Anthropic API when output quality on reasoning, long-context, and code tasks matters and you want a clean no-training default. Compare pricing per model against OpenAI; the two are close in capability and differ mainly in tooling and ecosystem.