What are the hardware requirements for BitCPM4 1B?

BitCPM4 1B requires approximately 2.7 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 BitCPM4 1B and how large is it?

BitCPM4 1B is developed by openbmb, 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 BitCPM4 1B?

BitCPM4 1B is hosted on Hugging Face and linked from this page. LLM Explorer also lists quantized variants and similar alternatives if available.

BitCPM4 1B by openbmb — VRAM 2.7GB, 32K context

Name: BitCPM4 1B
Author: openbmb

BitCPM4 1B is an open-source language model by openbmb. Features: 1b LLM, VRAM: 2.7GB, Context: 32K, License: apache-2.0, LLM Explorer Score: 0.19.

Conversational Custom code En Region:us Safetensors Zh

Model Card on HF 🤗: https://huggingface.co/openbmb/BitCPM4-1B

BitCPM4 1B Parameters and Internals

LLM Name	BitCPM4 1B
Repository 🤗	https://huggingface.co/openbmb/BitCPM4-1B
Model Size	1b
Required VRAM	2.7 GB
Updated	2026-08-03
Maintainer	openbmb
Model Files	2.7 GB
Supported Languages	zh en
Model Architecture	MiniCPMForCausalLM
License	apache-2.0
Context Length	32768
Model Max Length	32768
Transformers Version	4.46.3
Tokenizer Class	LlamaTokenizer
Vocabulary Size	73448
Torch Data Type	bfloat16

Rank the BitCPM4 1B capabilities

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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 BitCPM4 1B

Best Alternatives	Context / RAM	Downloads	Likes
MiniCPM 1B Sft Bf16	4K / 2.7 GB	15365	19
MiniCPM S 1B Sft	4K / 2.7 GB	666	12
ProSparse MiniCPM 1B Sft	4K / 2.7 GB	403	3