What are the hardware requirements for Sailor 0.5B?

Sailor 0.5B requires approximately 1.2 GB of VRAM and supports a context window of 32K tokens. Quantized variants may run on less VRAM; see the Quantized Models section on this page.

Who developed Sailor 0.5B and how large is it?

Sailor 0.5B is developed by sail, a model with 0.5b parameters. The model is published as open weights on Hugging Face and indexed on LLM Explorer with full benchmark history.

How does Sailor 0.5B perform on standard benchmarks?

Sailor 0.5B has the following published scores: MMLU 25.13. Compare against reference models on this page or on the LLM Explorer leaderboards.

Sailor 0.5B by sail — VRAM 1.2GB, 32K context

Name: Sailor 0.5B
Author: sail

Sailor 0.5B is an open-source language model by sail. Features: 0.5b LLM, VRAM: 1.2GB, Context: 32K, License: apache-2.0, LLM Explorer Score: 0.16, Arc: 29.7, HellaSwag: 45.8, MMLU: 25.1, GSM8K: 1.2.

Arxiv:2404.03608 Base model:finetune:qwen/qwen1... Base model:qwen/qwen1.5-0.5b Conversational Dataset:allenai/madlad-400 Dataset:cc100 Dataset:cerebras/slimpajama-62... Dataset:skywork/skypile-150b Deploy:azure En Id Lo Model-index Ms Multilingual Qwen2 Region:us Safetensors Sailor Sea Th Vi Zh

Model Card on HF 🤗: https://huggingface.co/sail/Sailor-0.5B

Sailor 0.5B Parameters and Internals

LLM Name	Sailor 0.5B
Repository 🤗	https://huggingface.co/sail/Sailor-0.5B
Base Model(s)	Qwen/Qwen1.5-0.5B Qwen/Qwen1.5-0.5B
Model Size	0.5b
Required VRAM	1.2 GB
Updated	2026-07-03
Maintainer	sail
Model Type	qwen2
Model Files	1.2 GB
Supported Languages	en zh id th vi ms lo
Model Architecture	Qwen2ForCausalLM
License	apache-2.0
Context Length	32768
Model Max Length	32768
Transformers Version	4.37.0
Tokenizer Class	Qwen2Tokenizer
Padding Token	<\|endoftext\|>
Vocabulary Size	151936
Torch Data Type	bfloat16
Errors	replace

Rank the Sailor 0.5B 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 Sailor 0.5B

Best Alternatives	Context / RAM	Downloads	Likes
Reader Lm 0.5B	250K / 1 GB	188	150
Qwen2 0.5B	128K / 1 GB	1216780	169
Qwen2 0.5B Finetune Exp 1	128K / 1 GB	15	0
...0.5B FT EnhancedMUSREnsembleV3	128K / 1 GB	32	1
....5B FT V4 MUSR ENSEMBLE Mathis	128K / 2 GB	30	1
...0.5B FT MUSR ENSEMBLE V2Mathis	128K / 1 GB	25	0
...PRYMMAL 0.5B FT V4 MUSR Mathis	128K / 1 GB	62	1
Qwen2 0.5B Stf Imdb	128K / 1 GB	7	0
ECE PRYMMAL 0.5B FT V3 MUSR	128K / 2 GB	17	0
ECE PRYMMAL 0.5B FT V4 MUSR	128K / 2 GB	10	0

Note: green Score (e.g. "73.2") means that the model is better than sail/Sailor-0.5B.