Antrophic models sold in Foundry Marketplace

Yep - prompts and outputs submitted to Claude models via Microsoft Foundry are not used for model training by Anthropic. Anthropic does not use data from their commercial products (including the API deployed in Foundry) to improve their foundation models unless you explicitly opt in.

While data is not used for training, it is retained and processed by Anthropic on their infrastructure for operational and safety purposes. For Claude in Foundry, Anthropic acts as the data processor, meaning your prompts and completions are sent to Anthropic-managed servers rather than remaining entirely within Microsoft’s local environment. Standard API retention typically lasts for a short period (such as 7 to 30 days) to support service functionality and abuse monitoring, though sessions flagged for policy violations may be held for up to two years.

In this deployment model, Microsoft manages the billing and API endpoint infrastructure, but the actual "thinking" (inference) is performed by Anthropic-hosted services. Because Anthropic governs the processing of these prompts and responses, their specific commercial terms and Data Processing Addendum apply to how that information is handled.

For detailed confirmation, you can refer to Microsoft documentation on data privacy for Claude in Foundry.

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hth

Marcin