What are the hardware requirements for 1.5B Cold Start SFT?

1.5B Cold Start SFT requires approximately 3.5 GB of VRAM and supports a context window of 128K tokens. Quantized variants may run on less VRAM; see the Quantized Models section on this page.

Who developed 1.5B Cold Start SFT and how large is it?

1.5B Cold Start SFT is developed by XueZhang-bjtu, a model with 1.5b parameters. The model is published as open weights on Hugging Face and indexed on LLM Explorer with full benchmark history.

Where can I download or evaluate 1.5B Cold Start SFT?

1.5B Cold Start SFT is hosted on Hugging Face and linked from this page. LLM Explorer also lists quantized variants and similar alternatives if available.

1.5B Cold Start SFT by XueZhang-bjtu — VRAM 3.5GB, 128K context

Name: 1.5B Cold Start SFT
Author: XueZhang-bjtu

1.5B Cold Start SFT is an open-source language model by XueZhang-bjtu. Features: 1.5b LLM, VRAM: 3.5GB, Context: 128K, License: apache-2.0, LLM Explorer Score: 0.23.

Arxiv:2510.07300 Ar Conversational En Es Fr Ja Ko Math O1-like model Pt Qwen2 Region:us Safetensors Th Vi Zh

Model Card on HF 🤗: https://huggingface.co/XueZhang-bjtu/1.5B-cold-start-SFT

1.5B Cold Start SFT Parameters and Internals

LLM Name	1.5B Cold Start SFT
Repository 🤗	https://huggingface.co/XueZhang-bjtu/1.5B-cold-start-SFT
Model Size	1.5b
Required VRAM	3.5 GB
Updated	2026-08-01
Maintainer	XueZhang-bjtu
Model Type	qwen2
Model Files	3.5 GB
Supported Languages	en zh es ar vi ja ko fr pt th
Model Architecture	Qwen2ForCausalLM
License	apache-2.0
Context Length	131072
Model Max Length	131072
Transformers Version	4.46.3
Tokenizer Class	LlamaTokenizer
Padding Token	<｜end▁of▁sentence｜>
Vocabulary Size	151936
Torch Data Type	bfloat16

Rank the 1.5B Cold Start SFT capabilities

Have you tried this model? Rate its performance — this feedback helps the ML community find the right model for their needs.

Instruction Following and Task Automation
Factuality and Completeness of Knowledge
Censorship and Alignment
Data Analysis and Insight Generation
Text Generation
Text Summarization and Feature Extraction
Code Generation
Multi-Language Support and Translation

Best Alternatives to 1.5B Cold Start SFT

Best Alternatives	Context / RAM	Downloads	Likes
Qwen2.5 1.5B 1.3M Stretched	1280K / 3.1 GB	37	0
ReaderLM V2	500K / 3.1 GB	35356	804
Reader Lm 1.5B	250K / 3.1 GB	385	608
DeepSeek R1 Distill Qwen 1.5B	128K / 3.5 GB	600051	1545
Ko R1 1.5B Preview	128K / 7.1 GB	8	9
VibeThinker 1.5B	128K / 3.5 GB	3417	552
Qwen2.5 1.5B	128K / 3.1 GB	863295	203
...FT Tulu3 Decontaminated Masked	128K / 3.1 GB	167	0
Seq Monkey Pretrain Base 1.5B	128K / 3.5 GB	37	0
Qwen2 1.5B	128K / 3.1 GB	195380	102

Note: green Score (e.g. "73.2") means that the model is better than XueZhang-bjtu/1.5B-cold-start-SFT.