Qwen3.5 9B runs fully local on a phone: reasoning, code execution, and PDF generation on-device

fuzhongkai · reddit · 2026-09-05

A developer demos a fully on-device AI agent running Qwen3.5 9B IQ4XS via TensorSharp, his open-source GGUF inference runtime. Given a prompt like 'get today's top 10 gaining stocks,' the local agent reasons, generates and executes Python code on the phone, then autonomously discovers a Skill, reads its SKILL.md, and produces a PDF — no hardcoded workflow. Prompts, history, and local files never leave the device; network is used only for public data. He opens the question of whether 7B–12B quantized models plus mobile memory bandwidth are enough for useful autonomous workflows.

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