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Open-weight model · Text generation

humanizer

by Stephen Yu jialinyyzz/humanizer

humanizer is an open-weight model for text generation from Stephen Yu, released under Apache License 2.0. It has 12B parameters and a 262,144-token context. At 16-bit it needs about 28.7 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index. It draws 15.1k downloads a month.

A 12B model that rewrites AI-written drafts (emails, essays, reports, forum posts; English and Chinese) so they read like a person wrote them. It is trained to keep every number, unit, date, name and quote, and to add nothing. It runs locally.

Parameters12B
Context262,144
Weights87.6 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads15.1k

Runs On

What it takes to serve humanizer (12B 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 23.9 GB 28.7 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 12.0 GB 14.4 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 6.0 GB 7.2 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.

humanizer on every accelerator the SAVRN Index prices, at every precision

Model Card

By Stephen Yu, published under apache-2.0, revision c07c06c8fb79.

A 12B model that rewrites AI-written drafts (emails, essays, reports, forum posts; English and Chinese) so they read like a person wrote them. It is trained to keep every number, unit, date, name and quote, and to add nothing. It runs locally. No AI detector was used anywhere in training.

Usage without the app · 不用 App 怎么用 · AGENTS.md (for AI agents) · GitHub · Desktop app (macOS, Windows) · Install guide · 中文说明

GGUF files now have their own repo: jialinyyzz/humanizer-GGUF: every quantization (Q8_0, Q6_K, Q4_K_M, Q3, 2-bit) with its size, memory, KL to bf16 and quality on the task, and how they were made. The same files stay here too, so existing download commands keep working.

Setting this up with an AI agent? Point it at AGENTS.md: exact files, server command, prompt byte for byte, and a self-test.

Quick start

Read the full model card (4,120 words)

Configuration

Architecture
Gemma4UnifiedForConditionalGeneration
Context length (tokens)
262,144
Layers
48
Hidden size
3,840
Feed-forward size
15,360
Attention heads
16
Key/value heads
8
Head dimension
256
Vocabulary size
262,144
Sliding window (tokens)
1,024
Model type
gemma4_unified

Identity and Version

Repository
jialinyyzz/humanizer
Publisher
Stephen Yu
Task
Text generation
Modality
Text
Library
gguf
Parameters
12B parameters
Languages
en, zh
Revision
c07c06c8fb790e9235547dc47e8c3fd4738776aa
First published
2026-09-11
Last updated
2026-10-07

Files and Weights

35 files, 87.6 GB in total. The weights are 7 files totalling 87.6 GB in gguf, safetensors.

Weights7 files · 87.6 GB
Configuration3 files · 5.1 KB
Tokenizer2 files · 32.2 MB
Documentation6 files · 159.4 KB
Other16 files · 8.1 MB
Repository1 file · 3.6 KB
Every file
FileTypeSizeSHA-256
humanizer-12b-IQ2_XS-QAT.ggufWeights3.9 GB 383e5ca8f1f4
humanizer-12b-Q3-QAT.ggufWeights5.6 GB 307bbfdf66fb
humanizer-12b-Q4_K_M.ggufWeights7.6 GB 2229574dec51
humanizer-12b-Q6_K.ggufWeights10.0 GB c98f03bb9e71
humanizer-12b-Q8_0.ggufWeights12.7 GB 8d7a457b56de
humanizer-12b-bf16.ggufWeights23.8 GB 47d79b44c3e1
model.safetensorsWeights23.9 GB f6e8c0d176f9
config.jsonConfiguration4.3 KB —
generation_config.jsonConfiguration228 B —
prompt_format.jsonConfiguration553 B —
AGENTS.mdDocumentation20.9 KB —
LICENSEDocumentation11.4 KB —
NOTICEDocumentation486 B —
README.mdDocumentation29.9 KB —
USAGE.mdDocumentation49.1 KB —
USAGE.zh.mdDocumentation47.6 KB —
assets/app-en.pngOther522.1 KB 96775d01e86b
assets/app-showcase-en.pngOther621.4 KB 458aea52aeb0
assets/app-showcase-zh.pngOther738.2 KB feec02e06153
assets/app-zh.pngOther533.5 KB a7ed3c1920c3
assets/banner-en.pngOther194.7 KB 17d5fe5e800d
assets/banner-zh.pngOther192.5 KB a6c9a17c8e6a
assets/compare-en-email.pngOther531.2 KB 85c3719a02d6
assets/compare-en-forum.pngOther906.0 KB e7041409c302
assets/compare-zh-email.pngOther663.0 KB 8e82adfce489
assets/compare-zh-zhihu.pngOther998.6 KB 1dd4c2bf7af9
assets/results-detector-en.pngOther368.1 KB 2399cca785d6
assets/results-detector-zh.pngOther362.1 KB 5c4aa158e42e
assets/results-fidelity-en.pngOther335.7 KB 7130711cf787
assets/results-fidelity-zh.pngOther328.2 KB ba1d178189d6
assets/training-en.pngOther415.9 KB dd30c850f11c
assets/training-zh.pngOther417.3 KB 0e73a98769da
.gitattributesRepository3.6 KB —
tokenizer.jsonTokenizer32.2 MB 12bac982b793
tokenizer_config.jsonTokenizer1.5 KB —

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
87.6 GB
Download from Stephen Yu

Released by Stephen Yu through its official repository on Hugging Face. Read the license.

Built From

Memory Requirements

PrecisionWeights in memory
As published87.6 GB
16-bit23.9 GB
8-bit12.0 GB
4-bit6.0 GB

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

Built on This Model

Questions About humanizer

How much GPU memory does humanizer need?

About 28.7 GB at 16-bit and 7.2 GB at 4-bit: the weights (12B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run humanizer 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 humanizer commercially?

Yes. humanizer 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 humanizer's context length?

262,144 tokens, from the maximum position embeddings in its published configuration.

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