Perplexity’s Portable Computer runs its agent stack on a local DGX Spark

On August 26, 2026 The Register reported that Perplexity is trying to get into local AI with Portable Computer.

What we know

• Portable Computer is a local version of Perplexity’s Computer agent, running a harness, orchestrator, and open-weight models on an Nvidia DGX Spark.
• Local inference avoids per-token API fees.
• The stack can run Qwen 3.8 27B, Qwen 3.6 35B, and Nemotron 3.5 Lightning.
• Perplexity said the local agent matched or beat the Pi and Hermes harnesses on accuracy while using the fewest tokens.
• The Register noted that Nvidia has separately been reported as considering a large investment in Perplexity.

Takeaways

• Perplexity is putting its Computer agent on a box, not only behind an API.
• The local stack is built around open-weight models on DGX Spark.
• The company claims better or equal accuracy than Pi and Hermes with fewer tokens.

Source: The Register