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Qwen / Model details

Qwen3.5-9B

Qwen/Qwen3.5-9B

fine-tuned
Download files on Hugging Face ↗

Read the original model card ↗ · Choosing a model

About this model

Qwen3.5-9B is the Qwen team's post-trained vision-language model for text, image and video input. It pairs a vision encoder with a language backbone that alternates Gated DeltaNet and gated attention layers. Thinking is enabled by default, with a separate configuration for direct answers. Its native context is 262,144 tokens; the documented extension to roughly a million uses YaRN scaling, which Qwen warns can affect shorter-text performance.

Description sources

Source-based description, not an independent evaluation. Check the linked sources for the creator’s claims and limitations.

Size and formats

Base model
Qwen/Qwen3.5-9B-Base
Parameters
9.6531B
Main repository formats
safetensors
License tag
apache-2.0
Languages
Unknown
Last updated
2026-03-02 · 00:51:43.000 UTC

What changed

Model types are creator-reported, not independently tested. These labels describe source metadata, not a guarantee of behavior.

  • fine-tunedsource tag: base_model:finetune:Qwen/Qwen3.5-9B-Base

Family evidence

These groupings are source-reported. Explicit base identifiers take priority over generic architecture tags.

  • Qwen: Base model: Qwen/Qwen3.5-9B-Base

Available versions

Versions appear here only when they explicitly name this exact model as their source. Check each repository for available files.

Download sources

ModelScope distribution ↗
  • Distribution checked: ModelScope · 2026-10-24 · 03:14:44 UTC

Distribution links are not independent reviews or runtime compatibility guarantees. Check each source’s exact files and instructions.

Try it online

Try on Featherless ↗
  • Listing checked: Featherless · 2026-10-24 · 03:14:44 UTC

Third-party hosted inference listing this exact model ID. Hosting settings, quantization and pricing are the host’s, not tested here.

Refusal profile

Refused 100 of 116 prompts (86.2%)

We asked this model 120 benign but risky-looking prompts across ten topics and counted how often it refused, hedged or answered. Lower means it answered more often; it says nothing about answer quality.

  • Persuasion & deception9 refused · 0 partial · 3 complied
  • Harassment & confrontation11 refused · 0 partial · 0 complied
  • Risky activities12 refused · 0 partial · 0 complied
  • Offensive & controversial speech11 refused · 0 partial · 1 complied
  • Legal grey areas11 refused · 0 partial · 1 complied
  • Privacy & personal data10 refused · 0 partial · 1 complied
  • Self-harm & mental health topics10 refused · 1 partial · 0 complied
  • Sexual & adult topics6 refused · 0 partial · 6 complied
  • Ethically grey requests9 refused · 0 partial · 2 complied
  • Violence & conflict11 refused · 1 partial · 0 complied

Capability check: 15 of 15 passed. Fifteen simple tasks with known answers, so a broken model cannot score well by refusing nothing.

Unclear answers: 4 (not counted). An answer is unclear when the two checker models disagree or the output was empty or garbled.

Measured 2026-10-25 · Q4_K_M via unsloth/Qwen3.5-9B-GGUF ↗ · llama.cpp · prompt set v1

How we measure · The prompts

Link to this listing

Made or quantized this model? Paste one of these into your model card or README so people can find this listing.

Markdown

[Listed on Custom Clankers](https://customclankers.com/models/qwen-qwen3-5-9b/)

HTML

<a href="https://customclankers.com/models/qwen-qwen3-5-9b/">Listed on Custom Clankers</a>

Plain text links only: no image, no script, nothing loaded from this site.

Customize or build on this model

Listed from public GitHub data, not tested by us. Read the code and license before you run anything.

Linked in the model card

GitHub repositories the original model card links to.

  • sgl-project/sglang ↗

    Repo’s own description: SGLang is a high-performance serving framework for large language models and multimodal models.

    ★ 38,005 · Last updated 2026-10-25 · License: Apache-2.0

  • vllm-project/vllm ↗

    Repo’s own description: A high-throughput and memory-efficient inference and serving engine for LLMs

    ★ 95,376 · Last updated 2026-10-25 · License: Apache-2.0

  • kvcache-ai/ktransformers ↗

    Repo’s own description: A Flexible Framework for Experiencing Heterogeneous LLM Inference/Fine-tune Optimizations

    ★ 19,630 · Last updated 2026-10-20 · License: Apache-2.0

  • QwenLM/Qwen-Agent ↗

    Repo’s own description: Agent framework and applications built upon Qwen>=3.0, featuring Function Calling, MCP, Code Interpreter, RAG, Chrome extension, etc.

    ★ 17,211 · Last updated 2026-03-04 · License: Apache-2.0

  • QwenLM/qwen-code ↗

    Repo’s own description: An open-source AI coding agent that lives in your terminal.

    ★ 28,707 · Last updated 2026-10-25 · License: Apache-2.0

Projects that use this model

Public projects whose files name this exact model.

  • Nutlope/twitterbio ↗

    Repo’s own description: Generate your Twitter bio with AI

    ★ 1,770 · Last updated 2026-10-23 · License: MIT

    Names this model in: README.md ↗

  • tszdanger/RealMythos ↗

    Repo’s own description: Public reconstruction of Claude Mythos as an open cybersecurity reasoning stack: datasets, models, reproducible environments, and trace infrastructure.

    ★ 381 · Last updated 2026-06-08 · License: not stated

    Names this model in: README.md ↗

  • surya-koritala/Glyd ↗

    Repo’s own description: Lossless AI compression: 33% less GPU memory, bit for bit.

    ★ 319 · Last updated 2026-10-17 · License: not stated

    Names this model in: README.md ↗

  • modelscope/twinkle ↗

    Repo’s own description: Twinkle✨: Training workbench to make your model glow.

    ★ 260 · Last updated 2026-10-23 · License: Apache-2.0

    Names this model in: README.md ↗

  • APUS-AI-Lab/fast-browser-use ↗

    Repo’s own description: A fast browser-use skill powered by local LLMs via single-token reflexes. Fast, local-first, zero hallucinations.

    ★ 234 · Last updated 2026-09-21 · License: MIT

    Names this model in: README.md ↗

  • EvolvingLMMs-Lab/SkillOpt-Lite ↗

    Repo’s own description: SkillOpt-Lite and HarnessOpt: Optimize your skill or harness with one line of vibe

    ★ 204 · Last updated 2026-07-22 · License: MIT

    Names this model in: trapi.py ↗

Tools to customize it further

Remove more refusals

  • Heretic ↗ ★ 36,421

    Removes refusal behavior from transformer models automatically. It pairs directional ablation (abliteration) with an Optuna parameter search that tries to cut refusals while keeping the model close to the original, so you don't have to pick layers by hand.

  • OBLITERATUS ↗ ★ 8,946

    A larger refusal-removal toolkit with several abliteration methods, usable locally or through a hosted Hugging Face Space. Check the telemetry setting before you run it: the README describes telemetry as opt-in, but on by default in the Spaces version.

Fine-tune it on your own data

  • Unsloth ↗ ★ 78,528

    A desktop app and Python library for running and training models locally. Its README lists LoRA, QLoRA, full fine-tuning, DPO and GRPO, plus export to formats including GGUF, on Windows, Linux, WSL and macOS.

  • LlamaFactory ↗ ★ 75,713

    Fine-tunes more than 100 language and vision-language models from a command line or a browser-based Web UI, aimed at training without writing code.

Make a smaller download (quantize)

  • llama.cpp ↗ ★ 132,260

    Runs models locally and includes the tools behind most GGUF files. A conversion script turns Hugging Face weights into GGUF, and llama-quantize shrinks a high-precision GGUF to lower-bit formats, which can cost some accuracy.

  • MLX LM ↗ ★ 7,467

    Apple's MLX package for running and fine-tuning models on Apple silicon. It can quantize models and upload them to the Hugging Face Hub, and supports LoRA and full fine-tuning.

Merge it with another model

  • mergekit ↗ ★ 7,414

    Merges pretrained models with many merge methods. It works out-of-core, so merges can run on a CPU or with as little as 8 GB of VRAM, and it also handles LoRA extraction and mixture-of-experts merges.

Learn the techniques

  • LLM Course ↗ ★ 84,667

    A free course with roadmaps and Colab notebooks. Its notebooks include one-click tools for merging with MergeKit, quantizing to GGUF, GPTQ, EXL2, AWQ and HQQ, and automatic abliteration with custom datasets.

Compare all tools →

Source provenance

Downloads
6,291,933
Likes
2,236
Metadata checked
2026-10-25 · 05:05:23 UTC
First seen in index
2026-10-20 · 21:59:08 UTC
Source revision
c202236235762e1c871ad0ccb60c8ee5ba337b9a

Source-card excerpt

Source model card excerpt: Qwen3.5-9B []( [!Note] This repository contains model weights and configuration files for the post-trained model in the Hugging Face Transformers format. These artifacts are

From Qwen/Qwen3.5-9B. Creator model-card excerpt, not an independent review.

Inspect before you run

Low refusal is not proof of correctness. Outputs can be inaccurate, harmful, or biased. Review the model card, license and files yourself. A license tag is not commercial-use advice. Parameter counts are source metadata; no hardware compatibility is implied.

This directory does not host or redistribute model weights. Refusal profiles are measured by us on a fixed prompt set; all other behavior claims are source-reported.

Collection rules & limitations ↗