What are the hardware requirements for AFM 4.5B Preview?

AFM 4.5B Preview requires approximately 9.3 GB of VRAM and supports a context window of 64K tokens. Quantized variants may run on less VRAM; see the Quantized Models section on this page.

Who developed AFM 4.5B Preview and how large is it?

AFM 4.5B Preview is developed by arcee-ai, a model with 4.5b 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 AFM 4.5B Preview?

AFM 4.5B Preview is hosted on Hugging Face and linked from this page. LLM Explorer also lists quantized variants and similar alternatives if available.

AFM 4.5B Preview by arcee-ai — VRAM 9.3GB, 64K context

Name: AFM 4.5B Preview
Author: arcee-ai

AFM 4.5B Preview is an open-source language model by arcee-ai. Features: 4.5b LLM, VRAM: 9.3GB, Context: 64K, License: apache-2.0.

Arxiv:2410.06511 Ar Arcee Base model:arcee-ai/afm-4.5b-b... Base model:finetune:arcee-ai/a... Conversational De En Endpoints compatible Es Fr Hi It Ko Pt Region:us Ru Safetensors Sharded Tensorflow Zh

Model Card on HF 🤗: https://huggingface.co/arcee-ai/AFM-4.5B-Preview

AFM 4.5B Preview Parameters and Internals

LLM Name	AFM 4.5B Preview
Repository 🤗	https://huggingface.co/arcee-ai/AFM-4.5B-Preview
Base Model(s)	arcee-ai/AFM-4.5B-Base arcee-ai/AFM-4.5B-Base
Model Size	4.5b
Required VRAM	9.3 GB
Updated	2026-08-09
Maintainer	arcee-ai
Model Type	arcee
Model Files	5.0 GB: 1-of-2 4.3 GB: 2-of-2
Supported Languages	en es fr de it pt ru ar hi ko zh
Model Architecture	ArceeForCausalLM
License	apache-2.0
Context Length	65536
Model Max Length	65536
Transformers Version	4.54.1
Tokenizer Class	PreTrainedTokenizerFast
Padding Token	<\|finetune_right_pad_id\|>
Vocabulary Size	128064
Torch Data Type	bfloat16

Rank the AFM 4.5B Preview 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 AFM 4.5B Preview

Best Alternatives	Context / RAM	Downloads	Likes
Austral 4.5B Winton	64K / 9.3 GB	90	12
AFM 4.5B Base Pre Anneal	4K / 18.5 GB	37	3

Note: green Score (e.g. "73.2") means that the model is better than arcee-ai/AFM-4.5B-Preview.