Math and reasoningText

Light-R1

Reasoning models from Qihoo 360: a standard Qwen2.5 was fine-tuned for long reasoning using an open recipe; data and code are published.

Developer
Qihoo 360, China
First release
Mar 2025
Latest release
Mar 2025
Sizes
7B – 32B
License
Commercial use allowedApache 2.0
Russian
Not stated
Ready-made builds
GGUF, MLX (Apple)
Running
On your own serverNeeds a GPU
Industries
Science and research, Education, Finance
Deploy on your server Hugging Face GitHub

What it does

  • Calculations and formula checks
  • Working through problems step by step
  • A base for your own reasoning fine-tuning

Where it is used

EducationFinance and analyticsResearch groups

Hardware requirements

LaptopLaptop or regular PC, up to 8 GB of VRAM — smaller versions
fits
1 GPUOne GPU with 16–80 GB — mid-size versions
fits
ClusterServer with several GPUs — flagship versions
no versions

Versions

  1. Light-R1 7B, 14B, 32B на DeepSeek-R1-Distill
  2. Light-R1-32B

How to run it

On your own serverWeights are downloaded from Hugging Face and served with vLLM (load and API) or llama.cpp (modest hardware). The model then runs in a closed network with no per-request fees.Hugging Face
How much hardware you needCalculate the VRAM for the model size, context length and number of concurrent requests.Open the hardware calculator

I can set this up end to end: pick the model size, deploy it on your server and connect it to your systems. Quantization compresses a model so it takes less video memory and runs on more modest hardware. Answers change slightly, so quality is checked on your own examples.

Frequently asked questions

Can Light-R1 be used in a commercial project?

Yes. License: Apache 2.0. It allows commercial use, but it is still worth having a lawyer review the license before launch.

What hardware does Light-R1 need?

At minimum: Laptop or regular PC, up to 8 GB of VRAM — smaller versions. Without a GPU the model is not practical. You can calculate the exact VRAM for your model size and context in the hardware calculator.

Does Light-R1 support Russian?

The model card does not list languages, so Russian support cannot be promised — it has to be tested on your own examples.

Where can I download Light-R1 and what does it cost?

The Light-R1 weights are open and free to download. You only pay for the hardware it runs on and for the setup. Source links are at the bottom of this page.

How I deploy it for clients

  1. SelectionI pick the model size for your task and hardware and test it on your examples.
  2. DeploymentI deploy it on your server or in a closed network and provide an API.
  3. Fine-tuningI fine-tune it on your data (LoRA) or connect a knowledge base — whichever is cheaper for the task.
  4. IntegrationI connect it to your CRM, ERP, bot, website or team chat and set up monitoring.

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Details

Source: huggingface.co/qihoo360/Light-R1-14B-DS. Data checked against the model card on 22 Sep 2026. Have a lawyer review the license before commercial launch.