Mano-P GUI agent runs on 16GB Macs, but long tasks slow under memory pressure

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Mano-P, an on-device GUI agent, is officially recommended for an M4 Mac with 32GB of RAM, but its developers tested how it performs on a 16GB machine. On a MacBook Pro M5 with 16GB, the 4B Instruct model completed 47.0% of 100 macOS GUI tasks, and the Thinking variant reached 56.0%, compared with 83.0% for the cloud version. The main bottleneck is memory, since macOS, a browser, and an IDE consume much of the RAM before the model loads, and long task chains can push the system into swap and sharply reduce decode speed. The team says its GS-Pruning and Cider quantization tools help, though Cider's hardware acceleration only applies to M5 and newer chips. Users are advised to close other apps, use 4-bit weights, run one session at a time, and split long tasks.

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