Perplexity just separated reasoning from authority. Here’s why it matters for enterprises.

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Perplexity shipped Portable Computer this week, the local-first version of its Computer agent running on an Nvidia DGX Spark workstation, and the bill is steep: A DGX Spark starts at $4,700, and even an aging 24GB RTX 3090 sells well above $1,500.

The architectural choice beneath the surface deserves as much attention as the price tag: Most platforms building agents address reliability with greater intelligence. That typically includes a larger orchestrator model, a planner model, or a critic model reviewing the work.

Probabilistic reasoning proposes the next action, and deterministic software decides whether to execute it.

Perplexity separated the two jobs instead of stacking them. Probabilistic reasoning proposes the next action, and deterministic software decides whether to execute it.

The loop controller is code, and the decisions are still a model

Perplexity uses the term “orchestrator” to refer to the runtime controller rather than the planning model. That controller assembles context, enforces policy, and executes approved tool calls inside an OS-level sandbox. The company says it is deterministic code, not yet another model. The local model proposes the next action, including which tool to call and when to ask a cloud advisor for help. The split resembles a control plane architecture, where reasoning suggests, and inspectable software retains authority. Nate Kupp, Perplexity’s vice president of Computer Enterprise and Infrastructure, tells The New Stack that the harness accounted for most of the engineering work.

Same weights, better scores

Perplexity kept …

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