Model reference · open weights

Qwen3.5-vi-dpo

Available as managed deployment LLMs Phuc-HugigFace · community Text gen 1 variants 801 dl/mo

Qwen3.5-vi-dpo is an open-weight language model from Phuc-HugigFace. 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

Released byPhuc-HugigFace
TypeLanguage models
TaskText gen
Parameters (lead)1.9B
Context256k tokens
Runs withtransformers
Based onPhuc-HugigFace/Qwen3.5-2B-Vi-SFT
Released2026-09-11
Popularity801 downloads / month
LicenceUnknown

About

What Qwen3.5-vi-dpo is

This model is a fine-tuned version of Phuc-HugigFace/Qwen3.5-2B-Vi-SFT. It has been trained using TRL.

Read the full model card

Quick start

from transformers import pipeline

question = "If you had a time machine, but could only go to the past or the future once and never return, which would you choose and why?"
generator = pipeline("text-generation", model="Phuc-HugigFace/Qwen3.5-2B-Vi-DPO", device="cuda")
output = generator([{"role": "user", "content": question}], max_new_tokens=128, return_full_text=False)[0]
print(output["generated_text"])

Training procedure

This model was trained with DPO, a method introduced in Direct Preference Optimization: Your Language Model is Secretly a Reward Model.

Framework versions

  • TRL: 1.13.0
  • Transformers: 5.17.0
  • Pytorch: 2.8.0+cu129
  • Datasets: 5.0.1
  • Tokenizers: 0.23.2

Citations

Cite DPO as:

@inproceedings{rafailov2023direct,
    title        = {{Direct Preference Optimization: Your Language Model is Secretly a Reward Model}},
    author       = {Rafael Rafailov and Archit Sharma and Eric Mitchell and Christopher D. Manning and Stefano Ermon and Chelsea Finn},
    year         = 2023,
    booktitle    = {Advances in Neural Information Processing Systems 36: Annual Conference on Neural Information Processing Systems 2023, NeurIPS 2023, New Orleans, LA, USA, December 10 - 16, 2023},
    url          = {http://papers.nips.cc/paper_files/paper/2023/hash/a85b405ed65c6477a4fe8302b5e06ce7-Abstract-Conference.html},
    editor       = {Alice Oh and Tristan Naumann and Amir Globerson and Kate Saenko and Moritz Hardt and Sergey Levine},
}

Cite TRL as:

@software{vonwerra2020trl,
  title   = {{TRL: Transformers Reinforcement Learning}},
  author  = {von Werra, Leandro and Belkada, Younes and Tunstall, Lewis and Beeching, Edward and Thrush, Tristan and Lambert, Nathan and Huang, Shengyi and Rasul, Kashif and Gallouédec, Quentin},
  license = {Apache-2.0},
  url     = {https://github.com/huggingface/trl},
  year    = {2020}
}

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

Using it via the API

Call it like any OpenAI endpoint

Once AxForge deploys qwen3-5-vi-dpo for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (qwen3-5-vi-dpo 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":"qwen3-5-vi-dpo","messages":[{"role":"user","content":"Hello"}]}'

Create an account — your API key is available in the console. 3M free tokens every 30 days with every new account.

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