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Open-weight model · Text generation

bayon-it

by Bayon: AACL-IJCNLP 2026 attentionlab/bayon-it

bayon-it is an open-weight model for text generation from Bayon: AACL-IJCNLP 2026, released under Apache License 2.0. It has 109M parameters and a 8,192-token context. At 16-bit it needs about 0.3 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index. It draws 90 downloads a month.

Bayon Instruct is an instruction-tuned version of Bayon, a 100M-parameter decoder-only language model designed specifically for Khmer.

Parameters109M
Context8,192
Weights436.1 MB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads90

Runs On

What it takes to serve bayon-it (109M parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 0.2 GB 0.3 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 0.1 GB 0.1 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 0.1 GB 0.1 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Oct 7, 2026.

bayon-it on every accelerator the SAVRN Index prices, at every precision

Model Card

By Bayon: AACL-IJCNLP 2026, published under apache-2.0, revision 6c78fcf7aaf6.

Bayon Instruct

Bayon Instruct is an instruction-tuned version of Bayon, a 100M-parameter decoder-only language model designed specifically for Khmer.

Bayon was pretrained from scratch using a custom 5,000-token Khmer BPE tokenizer and subsequently adapted for instruction following with LoRA. The instruction-tuning data consists of 18,000 Gemini-distilled, Khmer-focused SFT examples.

The model is intended primarily for Khmer text generation and instruction-following tasks, particularly where maintaining Khmer-language output is important.

Model Details

Property Value
Base model attentionlab/bayon
Parameters ~100M
Architecture Decoder-only Transformer
Language Khmer (km)
Tokenizer Custom 5,000-token Khmer BPE
Pretraining data 1.361B Khmer tokens from FineWeb-2
Instruction-tuning data 18,000 SFT examples
Fine-tuning method LoRA
LoRA rank 16
LoRA alpha 32
LoRA dropout 0.1
Context/training sequence length 1,024 tokens
License Apache-2.0

The tokenizer retains byte fallback, although byte fallback was not observed in the evaluation described in the associated research.

Intended Use

Bayon Instruct is intended for:

Read the full model card (863 words)

Configuration

Architecture
GemmaForCausalLM
Context length (tokens)
8,192
Layers
28
Hidden size
512
Feed-forward size
2,048
Attention heads
8
Key/value heads
2
Head dimension
64
Vocabulary size
5,000
RoPE base
10000
Stored precision
float32
Model type
gemma

Identity and Version

Repository
attentionlab/bayon-it
Publisher
Bayon: AACL-IJCNLP 2026
Task
Text generation
Modality
Text
Library
Not stated by the source
Parameters
109M parameters
Languages
km
Revision
6c78fcf7aaf6b8169545498584725e8085f75731
First published
2026-07-24
Last updated
2026-10-04

Files and Weights

7 files, 436.6 MB in total. The weights are 1 file totalling 436.1 MB in safetensors.

Weights1 file · 436.1 MB
Configuration2 files · 800 B
Tokenizer2 files · 458.1 KB
Documentation1 file · 8.2 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
model.safetensorsWeights436.1 MB 400b5c67564c
config.jsonConfiguration661 B —
generation_config.jsonConfiguration139 B —
README.mdDocumentation8.2 KB —
.gitattributesRepository1.5 KB —
tokenizer.modelTokenizer352.9 KB 60cb773534c3
tokenizer.vocabTokenizer105.1 KB —

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
436.1 MB
Download from Bayon: AACL-IJCNLP 2026

Released by Bayon: AACL-IJCNLP 2026 through its official repository on Hugging Face. Read the license.

Built From

Memory Requirements

PrecisionWeights in memory
As published436.1 MB
16-bit0.2 GB
8-bit0.1 GB
4-bit0.1 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Questions About bayon-it

How much GPU memory does bayon-it need?

About 0.3 GB at 16-bit and 0.1 GB at 4-bit: the weights (109M parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run bayon-it on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

Can I use bayon-it commercially?

Yes. bayon-it is released under Apache License 2.0. The Apache License 2.0 is a permissive open-source license. It permits commercial use, modification and redistribution. It requires keeping the license and copyright notices and any NOTICE file, stating significant changes, and it includes an express patent grant from contributors.

What is bayon-it's context length?

8,192 tokens, from the maximum position embeddings in its published configuration.

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