What stays on your Mac. Perplexity's Hybrid Compute keeps your private files local and masks the rest before sending it. Your request. Local model. reads your private files. Local filter. swaps names, addresses, accounts. Cloud models. reasoning, web search. On your Mac : Your request, Local model, Local filter. In the cloud : Cloud models. Your request → Local model (private files). Your request → Local filter (everything else). Local filter → Cloud models (leaves masked).