This Privacy Impact Assessment (PIA) analyzes Claude Opus 4.7, Anthropic's flagship large language model, to identify privacy concerns and present recommendations for mitigation. Opus 4.7 introduces capabilities beyond those of earlier Claude releases, including a one-million-token context window in beta, multi-agent coordination via a mailbox protocol, and an expanded surface area spanning Claude.ai, the Anthropic API, Claude Code, Claude in Chrome, and Cowork, and these capabilities open the door to additional privacy concerns as a result. With that understanding, many of the privacy concerns addressed in this document (specifically concerns revolving around text input, training data, and conversation retention) are applicable to prior Claude models and to the broader large language model class as well. This PIA also provides a thorough analysis of Claude Opus 4.7 under the General Data Protection Regulation (GDPR), the European Union's comprehensive data privacy rights act, which has shaped the adoption of comprehensive data privacy rights acts outside of European countries, and under the European Union AI Act, the world's first horizontal regulation of artificial intelligence systems.