PPLX 27B

PPLX 27B is a language model made by Perplexity. The "27B" in its name refers to the 27 billion parameters inside the model—parameters being the numeric "dials" that the model fine-tunes as it learns. More dials let a model capture more complex language patterns, but they also demand more computing power to run.

This model is used as one of the local execution models inside Portable Computer, Perplexity's on-device agent system that runs directly on a user's own computer without needing an internet connection. Alongside it, Alibaba's Qwen3.8 27B is also supported, so users can pick either model and handle both search and reasoning entirely on their own hardware.

In the article, it appears in a line like "supports PPLX 27B and Qwen 3.8 27B as execution models." It's important not to confuse PPLX 27B with a separate cloud service—it refers to a local model that runs directly on the user's own machine (such as a DGX Spark).