Math and reasoningText

Sky-T1

A Berkeley reasoning model trained for under 450 dollars. It showed that o1-preview-level reasoning can be reproduced with modest resources.

Developer
NovaSky (Sky Computing Lab, Berkeley), USA
First release
Jan 2025
Latest release
Feb 2025
Sizes
7B – 32B
License
Commercial use allowedApache 2.0 (32B versions; the 7B has no license stated on the card)
Russian
Not supported
Ready-made builds
GGUF
Running
On your own serverNeeds a GPU
Industries
Science and research, Education
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

EducationResearch groupsEngineering companies

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. Sky-T1-7B и Sky-T1-mini
  2. Sky-T1-32B-Flash
  3. Sky-T1-32B-Preview

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 Sky-T1 be used in a commercial project?

Yes. License: Apache 2.0 (32B versions; the 7B has no license stated on the card). It allows commercial use, but it is still worth having a lawyer review the license before launch.

What hardware does Sky-T1 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 Sky-T1 support Russian?

No. The model card lists its languages and Russian is not among them.

Where can I download Sky-T1 and what does it cost?

The Sky-T1 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.

Similar models

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DetailsMath and reasoningOpenThinkerOpen Thoughts (Stanford, Berkeley and other universities) · USACommercial use allowed

Fully open reasoning models: both weights and training data are published. Newer OpenThinkerAgent versions can carry out multi-step tasks.

DetailsMath and reasoningQwQQwen (Alibaba) · ChinaCommercial use allowed

Qwen's first open reasoning model: it thinks step by step before answering and comes close to DeepSeek-R1 on maths tasks with only 32B parameters.

Details

Source: huggingface.co/api/models?author=NovaSky-AI&sort=createdAt&direction=-. Data checked against the model card on 22 Sep 2026. Have a lawyer review the license before commercial launch.