9B, 4B, 2B, 0.8B (dense)
Apache 2.0
Official small-size Qwen 3.5 release set in the Qwen3.5 collection, including Qwen3.5-9B, Qwen3.5-4B, Qwen3.5-2B, and Qwen3.5-0.8B plus matching Base variants; model cards list image-text-to-text post-trained checkpoints in Hugging Face Transformers format; compatible with Hugging Face Transformers, vLLM, SGLang, and KTransformers; context length is 262,144 tokens with extension guidance up to around 1,010,000 tokens; Qwen3.5 family highlights include unified vision-language training, hybrid Gated DeltaNet plus sparse-MoE design, and large-scale RL generalization.