Overview
- Perplexity announced hybrid compute in its Mac app on Tuesday, Sept. 1, 2026, making the feature available to split each AI task between cloud 'frontier' models that orchestrate work and local models that handle flagged sensitive steps.
- A local PII classifier scans prompts and files before any cloud handoff and can mask details, keep data on the Mac, refuse the action, or prompt the user to allow sending data to the cloud.
- At launch Perplexity ships on‑device models including Gemma E4B and Qwen3.6 variants to run local processing, and it requires Apple silicon Macs with at least 24 GB of unified memory for hybrid compute to run.
- Perplexity also released PII‑TRACE as an open‑source benchmark for evaluating PII detectors to help demonstrate detection performance, but some outlets urge extensive independent testing because of the company’s past data‑handling controversies.
- The move aims to make agent workflows that access private files practical for iPhone and iPad users when a Mac is on, a change that could ease adoption in regulated industries if detectors and local routing prove reliable.