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Open-weight model · Image and text to text

Qwen3.5-9B

by Qwen Qwen/Qwen3.5-9B

Over recent months, we have intensified our focus on developing foundation models that deliver exceptional utility and performance.

Parameters9.7B
Context262,144
Weights19.3 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads9.3M

Runs On

What it takes to serve Qwen3.5-9B (9.7B parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 19.3 GB 23.2 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 9.7 GB 11.6 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 4.8 GB 5.8 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Sep 18, 2026.

SAVRN's Notes on Qwen3.5-9B

Start from 23.2 GB. That is the memory need at 16-bit, 19.3 GB of it weights, falling to 11.6 GB at 8-bit and 5.8 GB at 4-bit. The cheapest setup is one MI300X with 192 GB at $1.85 per hour, so this 9.7 billion parameter image-and-text model leaves most of the card empty. The rest is room: long prompts against the 262,144-token context, or a second copy of the weights.

Apache 2.0 lets you modify it, redistribute it and sell access, provided the license and NOTICE file travel with it and significant changes are stated. Confirm you want this build rather than the Qwen3.5-9B-Base it derives from, then check the hosts: DeepInfra charges $0.10 in and $0.15 out per million tokens, Together AI $0.17 and $0.25. Your own hardware wins on volume and on keeping images in-house.

Model Card

By Qwen, published under apache-2.0, revision c20223623576.

[!Note] This repository contains model weights and configuration files for the post-trained model in the Hugging Face Transformers format.

These artifacts are compatible with Hugging Face Transformers, vLLM, SGLang, KTransformers, etc.

Over recent months, we have intensified our focus on developing foundation models that deliver exceptional utility and performance. Qwen3.5 represents a significant leap forward, integrating breakthroughs in multimodal learning, architectural efficiency, reinforcement learning scale, and global accessibility to empower developers and enterprises with unprecedented capability and efficiency.

Qwen3.5 Highlights

Qwen3.5 features the following enhancement:

Read the full model card (3,176 words)

Configuration

Architecture
Qwen3_5ForConditionalGeneration
Context length (tokens)
262,144
Layers
32
Hidden size
4,096
Feed-forward size
12,288
Attention heads
16
Key/value heads
4
Head dimension
256
Vocabulary size
248,320
Model type
qwen3_5

Identity and Version

Repository
Qwen/Qwen3.5-9B
Publisher
Qwen
Task
Image and text to text
Modality
Image and text
Library
transformers
Parameters
9.7B parameters
Languages
Not stated by the source
Revision
c202236235762e1c871ad0ccb60c8ee5ba337b9a
First published
2026-02-27
Last updated
2026-03-02

Files and Weights

16 files, 19.3 GB in total. The weights are 4 files totalling 19.3 GB in safetensors.

Weights4 files · 19.3 GB
Configuration4 files · 83.6 KB
Tokenizer4 files · 22.9 MB
Documentation2 files · 89.2 KB
Other1 file · 7.8 KB
Repository1 file · 1.6 KB
Every file
FileTypeSizeSHA-256
model.safetensors-00001-of-00004.safetensorsWeights5.3 GB db6f444b43d3
model.safetensors-00002-of-00004.safetensorsWeights5.3 GB 31c7d7e2dd5d
model.safetensors-00003-of-00004.safetensorsWeights5.4 GB 7ec36ba3a417
model.safetensors-00004-of-00004.safetensorsWeights3.3 GB b62b0c4cd7e4
config.jsonConfiguration3.1 KB
model.safetensors.index.jsonConfiguration79.7 KB
preprocessor_config.jsonConfiguration390 B
video_preprocessor_config.jsonConfiguration385 B
LICENSEDocumentation11.5 KB
README.mdDocumentation77.6 KB
chat_template.jinjaOther7.8 KB
.gitattributesRepository1.6 KB
merges.txtTokenizer3.4 MB
tokenizer.jsonTokenizer12.8 MB 5f9e4d4901a9
tokenizer_config.jsonTokenizer16.7 KB
vocab.jsonTokenizer6.7 MB

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
19.3 GB
Download from Qwen

Released by Qwen through ModelScope. Read the license.

Built From

  • Derived from Qwen/Qwen3.5-9B-Base

Evaluations

Each result is shown as reported, with the conditions its reporter stated. None is a SAVRN measurement. A comparison lines two results up only when their configuration, unit and setup are all stated and identical.

BenchmarkConditionsResultReported byRevisionDate
Delores-Lin/MDPBench Task arMetric arComparison conditions not established 53.4 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task deMetric deComparison conditions not established 72.8 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task digitalMetric digitalComparison conditions not established 74.8 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task enMetric enComparison conditions not established 72 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task esMetric esComparison conditions not established 72 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task frMetric frComparison conditions not established 64.4 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task hiMetric hiComparison conditions not established 56.2 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task idMetric idComparison conditions not established 66.2 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task itMetric itComparison conditions not established 77.6 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task jpMetric jpComparison conditions not established 55.7 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task koMetric koComparison conditions not established 60.3 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task latinMetric latinComparison conditions not established 72.5 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task nlMetric nlComparison conditions not established 74.5 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task non_latinMetric non_latinComparison conditions not established 58.2 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task overallMetric overallComparison conditions not established 65.7 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task photographedMetric photographedComparison conditions not established 62.7 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task ptMetric ptComparison conditions not established 79.1 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task ruMetric ruComparison conditions not established 54.7 Not named
Reported by a third party
Evaluated revision not stated 2026-04-14
Delores-Lin/MDPBench Task viMetric viComparison conditions not established 74 MDPBench leaderboard
Reported by a third party
Evaluated revision not stated 2026-04-14
Idavidrein/gpqa Task diamondMetric diamondComparison conditions not established 81.7 Model Card
Reported by a third party
Evaluated revision not stated 2026-03-02
MMMU/MMMU_Pro Task mmmu_pro_visionMetric mmmu_pro_visionComparison conditions not established 70.1 Model Card
Reported by a third party
Evaluated revision not stated 2026-04-28
MathArena/aime_2026 Task MathArena/aime_2026Metric MathArena/aime_2026Comparison conditions not established 92.5 Official MathArena Evaluation
Reported by a third party
Evaluated revision not stated 2026-03-17
MathArena/hmmt_feb_2026 Task MathArena/hmmt_feb_2026Metric MathArena/hmmt_feb_2026Comparison conditions not established 71.21 Official MathArena Evaluation
Reported by a third party
Evaluated revision not stated 2026-03-17
TIGER-Lab/MMLU-Pro Task mmlu_proMetric mmlu_proComparison conditions not established 82.5 Model Card
Reported by a third party
Evaluated revision not stated 2026-03-02
likaixin/ScreenSpot-Pro Task overallMetric overallComparison conditions not established 65.2 Model Card
Reported by a third party
Evaluated revision not stated 2026-03-18
llamaindex/ExtractBench Task longMetric longSetup Pipeline name: qwen3_5_9b_vllm_extract_oneshot_structured_output_fileComparison conditions not established 32.22 ExtractBench
Reported by a third party
Evaluated revision not stated 2026-08-24
llamaindex/ExtractBench Task meanMetric meanSetup Pipeline name: qwen3_5_9b_vllm_extract_oneshot_structured_output_fileComparison conditions not established 86.1 ExtractBench
Reported by a third party
Evaluated revision not stated 2026-08-24
llamaindex/ExtractBench Task mediumMetric mediumSetup Pipeline name: qwen3_5_9b_vllm_extract_oneshot_structured_output_fileComparison conditions not established 81.12 ExtractBench
Reported by a third party
Evaluated revision not stated 2026-08-24
llamaindex/ExtractBench Task shortMetric shortSetup Pipeline name: qwen3_5_9b_vllm_extract_oneshot_structured_output_fileComparison conditions not established 92.31 ExtractBench
Reported by a third party
Evaluated revision not stated 2026-08-24
llamaindex/ParseBench Task chartMetric chartSetup Pipeline name: qwen3_5_9b_vllm_layoutComparison conditions not established 5.4 ParseBench
Reported by a third party
Evaluated revision not stated 2026-04-22
llamaindex/ParseBench Task layoutMetric layoutSetup Pipeline name: qwen3_5_9b_vllm_layoutComparison conditions not established 31.8 ParseBench
Reported by a third party
Evaluated revision not stated 2026-04-22
llamaindex/ParseBench Task meanMetric meanSetup Pipeline name: qwen3_5_9b_vllm_layoutComparison conditions not established 31.9 ParseBench
Reported by a third party
Evaluated revision not stated 2026-04-22
llamaindex/ParseBench Task tableMetric tableSetup Pipeline name: qwen3_5_9b_vllm_layoutComparison conditions not established 9.9 ParseBench
Reported by a third party
Evaluated revision not stated 2026-04-22
llamaindex/ParseBench Task text_contentMetric text_contentSetup Pipeline name: qwen3_5_9b_vllm_layoutComparison conditions not established 90.5 ParseBench
Reported by a third party
Evaluated revision not stated 2026-04-22
llamaindex/ParseBench Task text_formattingMetric text_formattingSetup Pipeline name: qwen3_5_9b_vllm_layoutComparison conditions not established 22 ParseBench
Reported by a third party
Evaluated revision not stated 2026-04-22

Memory Requirements

PrecisionWeights in memory
As published19.3 GB
16-bit19.3 GB
8-bit9.7 GB
4-bit4.8 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Hosted Prices

HostInput / outputUnitObserved
DeepInfra$0.10 / $0.15input / output, per million tokensSep 18, 2026
OVHcloud$0.12 / $0.18input / output, per million tokensSep 18, 2026
Together AI$0.17 / $0.25input / output, per million tokensSep 18, 2026

From the SAVRN Index.

Built on This Model

Compare Qwen3.5-9B

Questions About Qwen3.5-9B

How much GPU memory does Qwen3.5-9B need?

About 23.2 GB at 16-bit and 5.8 GB at 4-bit: the weights (9.7B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run Qwen3.5-9B on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

Can I use Qwen3.5-9B commercially?

Yes. Qwen3.5-9B is released under Apache License 2.0. The Apache License 2.0 is a permissive open-source license. It permits commercial use, modification and redistribution. It requires keeping the license and copyright notices and any NOTICE file, stating significant changes, and it includes an express patent grant from contributors.

What is Qwen3.5-9B's context length?

262,144 tokens, from the maximum position embeddings in its published configuration.

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