Qwen3.5-2B-Base

CheckpointQwen/Qwen3.5-2B-BaseModel card indexedModel card

Support summary

Qwen3.5-2B-Base is a checkpoint published by Qwen, built on the Qwen3_5ForConditionalGeneration architecture. vLLM lists its architecture, but not this exact checkpoint.

Configured context: 262,144 tokens
License: apache-2.0

Hugging Face model card

Publisher: Qwen
Task: image text to text
License: apache-2.0
Library: transformers
Architecture: Qwen3_5ForConditionalGeneration
Weight tensor elements: 2.3B
Tensor types: F32, BF16
Configured context: 262,144 tokens
Weight access: Public
Repository created: 2026-02-28

Source 1 Source 2 Source 3Reviewed 2026-09-05

Model notes and sources

Engine support

3 engines

Engine support for Qwen3.5-2B-Base
Engine	Release	Evidence scope	Last known supported
vLLM	`0.28.0`Newest indexed	Architecture listed; exact checkpoint unknown	No supported release indexed
Features, dependencies and evidence for vLLM 0.28.0
SGLang	`0.5.19`Newest indexed	No matching evidence curated	No supported release indexed
Features, dependencies and evidence for SGLang 0.5.19
TensorRT-LLM	`1.2.1`Newest indexed	No matching evidence curated	No supported release indexed
Features, dependencies and evidence for TensorRT-LLM 1.2.1