Qwen2.5-1.5B

Qwen2.5-1.5B is the smallest text model in Alibaba's Qwen2.5 family, released in September 2024 under Apache 2.0. It brought the family's improved multilingual and coding abilities down to a size that runs comfortably on edge devices and NPUs, and it became a staple of on-device AI demos, browser-adjacent inference experiments, and Huawei Ascend ecosystem ports.

The honest picture: 1.5B parameters is enough for coherent chat, simple coding help, and classification, but not for deep multi-step reasoning or reliable factual recall; hallucinations are frequent when it is pushed outside its depth. Treat it as a fast local assistant or a fine-tuning starting point, not a reasoning engine. The instruct variant is the practical choice, and quantized builds (GPTQ, AWQ, GGUF) are abundant.