What are the hardware requirements for Complexity 1B?

Complexity 1B requires approximately 2.6 GB of VRAM and supports a context window of 2K tokens. Quantized variants may run on less VRAM; see the Quantized Models section on this page.

Who developed Complexity 1B and how large is it?

Complexity 1B is developed by Dimensity, 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 Complexity 1B?

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

Complexity 1B by Dimensity — VRAM 2.6GB, 2K context

Name: Complexity 1B
Author: Dimensity

Complexity 1B is an open-source language model by Dimensity. Features: 1b LLM, VRAM: 2.6GB, Context: 2K, License: mit, LLM Explorer Score: 0.09.

Code Endpoints compatible Gpt neo Pytorch Region:us

Model Card on HF 🤗: https://huggingface.co/Dimensity/Complexity-1B

Complexity 1B Parameters and Internals

Model Type

code completion

Use Cases

Primary Use Cases:

code completion in Python

Limitations:

performance on other programming languages is unknown

Considerations:

Users should carefully validate any generated code before execution or deployment.

Training Details

Data Sources:

Python code from open source projects on GitHub

Methodology:

finetuning

LLM Name	Complexity 1B
Repository 🤗	https://huggingface.co/Dimensity/Complexity-1B
Model Size	1b
Required VRAM	2.6 GB
Updated	2026-09-04
Maintainer	Dimensity
Model Type	gpt_neo
Model Files	2.6 GB
Model Architecture	GPTNeoForCausalLM
License	mit
Context Length	2048
Model Max Length	2048
Transformers Version	4.34.0
Tokenizer Class	GPT2Tokenizer
Vocabulary Size	50257
Torch Data Type	float16
Activation Function	gelu_new
Errors	replace

Rank the Complexity 1B 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 Complexity 1B

Best Alternatives	Context / RAM	Downloads	Likes
IllaryiaStories 1M	2K / 0 GB	33	0
TinyStories 1M	2K / 0 GB	130187	67
Mia Astral 1.32B Conv	2K / 5.3 GB	5	0
TinyStories 1M Ds	2K / GB	163	0
TinyStories 1M ONNX	2K / GB	18	2
TinyStories Instruct 1M	2K / 0 GB	580	4
...n Prompt Generator 1M Examples	2K / 0.6 GB	10	4
Skript 1M GPT Neo350m	2K / 0 GB	7	1
Skript 1M GPT Neo125m	2K / 0.6 GB	8	0

Note: green Score (e.g. "73.2") means that the model is better than Dimensity/Complexity-1B.