TaichuAI/ZDTaichu5.0-9B — new model trending #30 on Hugging Face
TaichuAI released ZDTaichu5.0-9B, an open multimodal VLM built on Qwen3.5-9B targeting spatial reasoning, embodied AI, and agentic tool use.
TaichuAI released ZDTaichu5.0-9B, a multimodal vision-language model pairing a Qwen3.5-9B language decoder with a C-RADIOv4-H vision encoder, supporting text, single/multiple images, and video with any-resolution input and a 128K-token context. It introduces Entropy-Gated Adaptive Recurrent Reasoning, which allocates extra latent refinement steps to harder tokens. Reported benchmarks include 87.7 on TAU2-Bench, 71.4 on Claw-Eval, 93.7 on IFEval, 48 on ERQA, and 56 on RoboSpatial, leading compared 10B-scale open VLMs on agent and spatial tasks. The weights are available on Hugging Face, GitHub, and ModelScope, where it is trending at #30.
- Pairs a Qwen3.5-9B language backbone with a C-RADIOv4-H vision encoder; accepts text, images, and video.
- Leads reported 10B-scale VLM comparisons with TAU2-Bench 87.7, Claw-Eval 71.4, and IFEval 93.7.
- Adds Entropy-Gated Adaptive Recurrent Reasoning for adaptive latent-space refinement of difficult tokens.
- Targets spatial perception, 3D reasoning, embodied affordances, and multi-step agentic tool use.
- Open weights published on Hugging Face, GitHub, and ModelScope; trending #30 at release.
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# ZDTaichu5.0-9B
[Project Page](https://taichu-ai.github.io/ZDTaichu5.0-9B/) | [GitHub](https://github.com/Taichu-AI/ZDTaichu5.0-9B) | [ModelScope](https://www.modelscope.cn/models/TaichuAI/ZDTaichu5.0-9B)
ZDTaichu5.0-9B is a multimodal foundation model for general visual understanding, spatial reasoning, agentic tool use, and embodied-AI research. It combines a Qwen3.5-9B language backbone with a C-RADIOv4-H vision encoder, supports text, images and videos with any-resolution visual input.
Within the 10B-scale general-purpose VLMs compared in this release blog, ZDTaichu5.0-9B retains first-tier general visual understanding while supporting spatial reasoning, high-level embodied VLM reasoning, and agent tasks under the reported evaluation settings. Rather than trading broad visual competence for specialization, it layers a more comprehensive spatial, embodied, and agent capability profile on top of a strong general-vision foundation.
The model accepts text, one or more images, and video. It is designed for:
- general image, document, chart, diagram, and OCR understanding;
- visual mathematics and knowledge-grounded visual question answering;
- fine-grained 2D relations, multi-view association, 3D scene understanding, perspective taking, and mental transformation;
- multi-step and multi-turn tool use;
- spatial perception, affordance understanding, and planning for VLA and embodied-AI adaptation.
More demos and showcases are provided at [Project Page](https://taichu-ai.github.io/ZDTaichu5.0-9B/).
## Highlights
- **Strong general vision and broad capabilities:** remains in the leading group of 10B-scale general-purpose VLMs across images, documents, charts, diagrams, OCR, visual mathematics, multiple images and video, while extending to spatial reasoning, high-level embodied understanding and multi-step agent tasks.
- **Leading spatial reasoning and embodied understanding:** leads spatial capability among the compared 10B-scale general-purpose VLMs, with strong results on SparBench, ViewSpatial, MMSI-Bench and MindCube-tiny. Scores of 48 on ERQA and 56 on RoboSpatial cover scene reasoning, affordances and interaction-oriented understanding.
- **Strongest agent capability among the compared 10B-scale general-purpose VLMs:** leads the reported TAU2-Bench (87.7) and Claw-Eval (71.4) comparisons, and reaches 93.7 on IFEval.
- **Entropy-Gated Adaptive Recurrent Reasoning:** Dynamically allocates additional recurrent refinement steps in latent space to more challenging tokens, enabling greater computational depth where needed and improving reasoning performance on complex tasks.
## Model Overview
| Item | Specification |
|---|---|
| Model type | Multimodal causal language model with vision encoder |
| Language backbone | Qwen3.5-9B LLM Decoder|
| Vision backbone | C-RADIOv4-H |
| Context length | Up to 128K tokens |
| Vision resolution | Any-resolution visual input |
| Input modalities | Text, single image, multiple images, and video |
## Capabilities
### General visual understanding
The model can recognize objects, attributes, and scenes; read text in natural images and documents; interpret tables, forms, plots, and diagrams; and answer questions that combine visual evidence with language and world knowledge.
### Spatial perception and reasoning
Spatial training covers:
- left/right, above/below, front/behind, occlusion, containment, and relative distance;
- dense counting, fine-grained localization, points, coordinates, and bounding boxes;
- association across images and viewpoints;
- camera motion, relative pose, depth ordering, and room-scale layout;
- egocentric and allocentric perspective taking;
- 2D/3D rotation, paper folding, three-view projection, cross-sections, and part-motion reasoning;
- embodied affordances, manipulation semantics, and high-level action planning.
### Multiple images and video
ZDTaichu5.0-9B compares and reasons across multiple images and supports video understanding, including event tracking and detail retrieval from long footage within its 128K-token context window.
### Agentic tool use
The model is designed for multi-step and multi-turn tool-use tasks. Tool execution must be implemented, validated, and secured by the surrounding application; the model does not execute tools by itself.
## Benchmark Results
The two figures compare ZDTaichu5.0-9B with open and closed models across general visual understanding, spatial and embodied capabilities, and agent and text capabilities.
**Comparison with open models**

**Comparison with closed models**

### Spatial and embodied reasoning
<table>
<thead>
<tr>
<th align="left">Area</th>
<th align="left">Benchmark</th>
<th align="right">ZDTaichu5.0-9B</th>
<th align="right">Qwen3.5-9B</th>
<th align="right">STEP3-VL-10B</th>
<th align="right">gemma4-8B-E4B</th>
<th align="right">Gemini 3 Pro</th>
<th align="right">Grok 4</th>
<th align="right">GPT-5.2</th>
</tr>
</thead>
<tbody>
<tr>
<td rowspan="3" align="left" valign="middle">Basic spatial perception</td>
<td align="left">CV-Bench</td>
<td align="right">86.82</td>
<td align="right"><strong>87.19</strong></td>
<td align="right">83.49</td>
<td align="right">68.10</td>
<td align="right"><ins>90.07</ins></td>
<td align="right">—</td>
<td align="right">86.84</td>
</tr>
<tr>
<td align="left">3DSRBench</td>
<td align="right"><strong>60.96</strong></td>
<td align="right">56.78</td>
<td align="right">55.01</td>
<td align="right">53.62</td>
<td align="right"><ins>68.92</ins></td>
<td align="right">54.93</td>
<td align="right">60.20</td>
</tr>
<tr>
<td align="left">SparBench</td>
<td align="right"><strong>51.82</strong></td>
<td align="right">50.79</td>
<td align="right">45.68</td>
<td align="right">28.50</td>
<td align="right">48.74</td>
<td align="right">44.76</td>
<td align="right"><ins>55.07</ins></td>
</tr>
<tr>
<td rowspan="3" align="left" valign="middle">Complex spatial reasoning</td>
<td align="left">ViewSpatial</td>
<td align="right"><strong><ins>62.50</ins></strong></td>
<td align="right">48.20</td>
<td align="right">46.14</td>
<td align="right">41.68</td>
<td align="right">50.36</td>
<td align="right">43.23</td>
<td align="right">47.30</td>
</tr>
<tr>
<td align="left">MMSI-Bench</td>
<td align="right"><strong><ins>47.20</ins></strong></td>
<td align="right">38.70</td>
<td align="right">32.18</td>
<td align="right">29.20</td>
<td align="right">45.20</td>
<td align="right">37.80</td>
<td align="right">41.30</td>
</tr>
<tr>
<td align="left">MindCube-tiny</td>
<td align="right"><strong><ins>78.27</ins></strong></td>
<td align="right">57.60</td>
<td align="right">62.81</td>
Text extracted automatically; images, tables and formatting may be missing. Original: https://huggingface.co/TaichuAI/ZDTaichu5.0-9B