Qwen3.5-9B is a 9-billion-parameter multimodal foundation model developed by Alibaba Cloud's Qwen team, released on March 2, 2026 as part of the Qwen3.5 model family. Designed for efficient multimodal reasoning and long-context language tasks, it notably outperforms the older Qwen3-30B, a model more than three times its size, on key benchmarks including GPQA Diamond, IFEval, and LongBench.
The model supports vision-language inputs through an early-fusion multimodal architecture built on a dense hybrid foundation of Gated Delta Networks and Gated Attention. It can also operate in a text-only mode by skipping the vision encoder during inference. It provides a 262,144-token context window (extensible to ~1M tokens via YaRN) and is released under the Apache License 2.0. Within the current AI landscape, Qwen3.5-9B offers a strong balance of capability and efficiency, making it well-suited for multimodal assistants, document analysis, long-context reasoning, and developer-deployed agentic systems.
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Past 30 DaysQwen3.5 9b has not yet been evaluated on the current benchmark. The results below are from the legacy version of Vision Evals, our previous benchmark. See the current Vision Evals
| Category | Passed | Score |
|---|---|---|
| Defect Detection | 13 / 15 | 86.7% |
| Spatial Understanding | 16 / 19 | 84.2% |
| Object Understanding | 10 / 14 | 71.4% |
| Document Understanding | 6 / 9 | 66.7% |
| Object Counting | 3 / 10 | 30% |
Scores based on a single evaluation run · Methodology
View all legacy Vision Evals results →Qwen3.5 9b costs $0.100 per 1M input tokens and $0.150 per 1M output tokens.
Pricing updated Jul 20, 2026
Estimated cost per task vs. Visual Understanding score, for this model and others ranked near it. Upper-left is the sweet spot (high quality, low cost). Based on Vision Evals (legacy) results.
10 of 11 models plotted · 1 not yet evaluated
| Model | Score | Median tokens | Est. cost / task | Compare |
|---|---|---|---|---|
| GPT-5.6 Sol | 76.1% | 1.5K | $0.0073 | Compare |
| Gemini 3.1 Pro | 75.8% | 1.1K | $0.0024 | Compare |
| Gemini 3 Flash | 74.6% | 1.4K | $0.0014 | Compare |
| GPT-5 Mini | 73.1% | 1.8K | $0.0006 | Compare |
| Qwen3.5 27B | 71.6% | 1.2K | $0.0003 | Compare |
| Qwen3.5 9B(this model) | 71.6% | — | — | — |
| Claude Sonnet 5 | 70.2% | 2.2K | $0.0048 | Compare |
| Claude Sonnet 4.6 | 70.2% | 2.3K | $0.0080 | Compare |
| GPT-5.6 Luna | 70.2% | 1.5K | $0.0017 | Compare |
| Gemini 2.5 Pro | 70.2% | 856 | $0.0060 | Compare |
| Gemini 3.1 Flash-Lite | 68.7% | 1.1K | $0.0003 | Compare |
Other models worth comparing for similar use cases.
License terms and commercial-use guidance for Qwen3.5 9b.
This model is released under the Apache License 2.0, a permissive open-source license that allows commercial use, modification, distribution, and patent use.
Yes. Under the terms of the Apache 2.0 license, you can freely use this model for commercial purposes, including in proprietary products. You must retain the copyright notice and disclaimers when redistributing.
License information is provided as a guide and is not legal advice.
Yes. Qwen3.5 9b accepts image input, and on Roboflow's previous vision benchmark it passed 71.6% of visual understanding tasks (#16 of 77). You can test it on your own image in the demo above.
Qwen3.5 9b has not yet been evaluated on Roboflow's current Vision Evals. The results on this page are from the previous benchmark.
Yes. The demo on this page runs Qwen3.5 9b in the free Roboflow Playground: upload an image and see results in seconds. A free account unlocks unlimited runs.