Can I run Qwen 3 4B?

Qwen 3 4B is the model to reach for when you want real reasoning out of something small. At a 4-bit quant it lands around 2.4 GB, so it slips onto almost anything: a 6 GB GPU has headroom, any Apple Silicon Mac swallows it whole, and even an older laptop with an integrated card can host it. The minimum you want for comfortable use is about 6 GB of RAM. If you are running on a CPU-only box or a Raspberry-class device, this is one of the few models that stays genuinely useful at this footprint rather than just technically loadable.

In daily use it feels quick. On an RTX 3060 it pushes roughly 126 tokens per second at 4-bit, and an M-series Max sits near 144, both well past reading speed, so replies stream instantly for chat and short reasoning chains. A 4090 hits around 353 if you have one. Pure CPU on DDR5 drops to about 21 tokens per second, slow but workable for background tasks. The context window is 32K, plenty for most work, but filling it pushes total memory to roughly 5.5 GB, so on a tight 6 GB machine keep your working context modest.

Against its own family, Qwen 3 4B is the obvious step up from Qwen 3 1.7B when the smaller model starts fumbling multi-step prompts, while staying far lighter than the 7-8B tier. Phi-4 Mini 3.8B is a reasonable alternative at a similar size and generally trades blows on chat, but Qwen 3 4B's standout trait is punching above its parameter count on reasoning tasks for how little it costs to run. It ships under Apache 2.0, so you can use it commercially and in production without license worries, which is rare at this quality-to-size ratio.