Personalization & memory
Perplexity personalizes search relevance: occupation and custom instructions, demographic modals, response length prefs, Health and Finance vertical profiles, and search-history memory with Brain upsell.

Personalization tab: occupation, company, DOB and Gender Manage rows, custom instructions, Clear and Save.
What's happening
Perplexity personalizes for search relevance: declared profile and custom instructions, optional demographic modals, response formatting prefs, vertical Health and Finance profiles, and a separate Memory tab with history toggle and Max-tier Brain.
Patterns
Occupation, company, custom instructions, response length, and vertical Manage drill-ins
Use search history toggle separate from declared Personalization fields
Premium smarter memory gated on Max with connector and session benefits
UX Insights
- •Personalization and Memory are separate sidebar items under Account
- •Demographics use Manage modals with explicit relevance copy
- •Response length replaces tone presets for a research product
- •Health and Finance profiles tie settings to vertical hubs and digests
- •Basic memory is search history; Brain upsells advanced retention
Design Decisions
Perplexity optimizes personalization for answer relevance and vertical retention, not chat persona. Structured vertical profiles and watchlists feed Finance and Health products while memory stays a simple history toggle with a premium upgrade path.
More case studies

Personalization & memory
ChatGPT separates AI behavior customization from technical settings. Users pick named tone presets, fine-tune characteristics, declare profile fields, and manage inferred memories with search, deprioritize, and version restore.

Personalization & memory
Claude shapes behavior through natural-language profile instructions, opt-in chat memory under Capabilities, cross-platform memory import, and named voice style presets.

Settings
ChatGPT presents settings through a centered modal interface with extensive controls for appearance, voice customization, data management, and parental controls, emphasizing both personalization and safety features.

Incognito Mode
Claude offers an incognito (private) mode that lets users have conversations without saving them to history or using them to improve the model. The mode is toggled via a ghost icon in the header.
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