Model reference · open weights

R1

Available as managed deployment LLMs Skywork Vision + text 1 variants 0 dl/mo

R1 is an open-weight language model from Skywork. AxForge deploys and operates it for you on dedicated EU-owned hardware — with the licence handled where one is required.

Available as managed deployment — configured and operated for you on dedicated EU hardware, quoted per deployment.

What it is

MakerSkywork
TypeLanguage models
TaskVision + text
Runs withtransformers
Released2025-12-03
Popularity0 downloads / month
LicenceOpen weights

About

What R1 is

1. Model Introduction

Skywork-R1V4 is a 30B (A3B) multimodal agent that unifies:

  • Multimodal task planning
  • Active image manipulation (“thinking with images”)
  • Deep multimodal search (text × image)
  • Interleaved tool-grounded reasoning

Skywork-R1V4 is trained purely via supervised finetuning on < 30k high-quality, execution-consistent trajectories.

At inference time, the model exhibits emergent long-horizon reasoning, executing 10+ tool calls across visual operations and web search to solve complex real-world tasks.

Skywork-R1V4 achieves state-of-the-art performance on multimodal search benchmarks:

  • MMSearch: 66.1
  • FVQA: 67.2
  • Beats Gemini 2.5 Flash on all 11 comparable metrics

2. Feature

🔍 “Thinking With Images”

Skywork-R1V4 actively manipulates images through:

    • Multi-stage cropping     • Local detail extraction     • Region attention     • Visual clue refinement

🔄 Interleaved Reasoning

The model alternates between:

    1. Visual reasoning     2. Image operation     3. Web search     4. Cross-evidence verification

3. Links

  • Model Center: https://platform.skyworkmodel.ai/#/model-center
  • API Documentation (R1V4): https://docs.skyworkmodel.ai/r1v4/api-reference/completions.html

4. Citation

If you use Skywork-R1V4 in your research, please cite:

@misc{zhang2025skyworkr1v4agenticmultimodalintelligence,
      title={Skywork-R1V4: Toward Agentic Multimodal Intelligence through Interleaved Thinking with Images and DeepResearch},
      author={Yifan Zhang and Liang Hu and Haofeng Sun and Peiyu Wang and Yichen Wei and Shukang Yin and Jiangbo Pei and Wei Shen and Peng Xia and Yi Peng and Tianyidan Xie and Eric Li and Yang Liu and Xuchen Song and Yahui Zhou},
      year={2025},
      eprint={2512.02395},
      archivePrefix={arXiv},
      primaryClass={cs.CV},
      url={https://arxiv.org/abs/2512.02395},
}
@misc{peng2025skyworkr1vpioneeringmultimodal,
      title={Skywork R1V: Pioneering Multimodal Reasoning with Chain-of-Thought},
      author={Yi Peng and Peiyu Wang and Xiaokun Wang and Yichen Wei and Jiangbo Pei and Weijie Qiu and Ai Jian and Yunzhuo Hao and Jiachun Pan and Tianyidan Xie and Li Ge and Rongxian Zhuang and Xuchen Song and Yang Liu and Yahui Zhou},
      year={2025},
      eprint={2504.05599},
      archivePrefix={arXiv},
      primaryClass={cs.CV},
      url={https://arxiv.org/abs/2504.05599},
}

From the published model card. Full card on the HuggingFace links in the sidebar.

How it works

How language models work

Your prompttext / messagesTransformerattention over tokensNext-token loopgenerate + streamResponsetext · tool callsA language model reads your tokens and predicts the next one, again and again, streaming the reply back.

Using it via the API

Call it like any OpenAI endpoint

Once AxForge deploys r1 for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (r1 below is illustrative; you get the exact model name on deployment.)

$ curl -sS https://api.axforge.ai/v1/chat/completions \
  -H "Authorization: Bearer $AXFORGE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"r1","messages":[{"role":"user","content":"Hello"}]}'

Create an account — your API key is available in the console. 5M tokens/month currently included with every new account at launch.

© 2026 AxForge · EU-hosted AI infrastructure Pricing Docs Trust Privacy Terms