What are the hardware requirements for Open 1B Base?

Open 1B Base requires approximately 6.4 GB of VRAM and supports a context window of 4K tokens. Quantized variants may run on less VRAM; see the Quantized Models section on this page.

Who developed Open 1B Base and how large is it?

Open 1B Base is developed by Gensyn, a model with 1b 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 Open 1B Base?

Open 1B Base is hosted on Hugging Face and linked from this page. LLM Explorer also lists quantized variants and similar alternatives if available.

Open 1B Base by Gensyn — VRAM 6.4GB, 4K context

Name: Open 1B Base
Author: Gensyn

Open 1B Base is an open-source language model by Gensyn. Features: 1b LLM, VRAM: 6.4GB, Context: 4K, License: apache-2.0, LLM Explorer Score: 0.27.

Custom code En Gensyn Open1b Region:us Repops Reproducible-training Safetensors Verifiable-training

Model Card on HF 🤗: https://huggingface.co/Gensyn/open-1b-base

Open 1B Base Parameters and Internals

LLM Name	Open 1B Base
Repository 🤗	https://huggingface.co/Gensyn/open-1b-base
Model Size	1b
Required VRAM	6.4 GB
Updated	2026-09-17
Maintainer	Gensyn
Model Type	open1b
Model Files	6.4 GB
Supported Languages	en
Model Architecture	Open1BForCausalLM
License	apache-2.0
Context Length	4096
Model Max Length	4096
Tokenizer Class	PreTrainedTokenizerFast
Vocabulary Size	128256
Torch Data Type	bfloat16

Rank the Open 1B Base 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 Open 1B Base

Best Alternatives	Context / RAM	Downloads	Likes
Open 1B Sft	4K / 6.4 GB	418	15
Open 1B Midtrained 93B	4K / 6.4 GB	248	4

Note: green Score (e.g. "73.2") means that the model is better than Gensyn/open-1b-base.