Parameter	Value
direction_index	29.58
attn.o_proj.max_weight	1.43
attn.o_proj.max_weight_position	38.82
attn.o_proj.min_weight	0.91
attn.o_proj.min_weight_distance	23.43
mlp.down_proj.max_weight	1.39
mlp.down_proj.max_weight_position	39.20
mlp.down_proj.min_weight	1.38
mlp.down_proj.min_weight_distance	31.17

Performance

Metric	This model	Original model (prism-ml/Bonsai-27B-unpacked)
KL divergence	0.0033	0 (by definition)
Refusals	6/100	81/100

1-bit Bonsai 27B — Unpacked FP16 Safetensors

FP16 safetensors (HuggingFace format) of the 1-bit Bonsai 27B model. This repo exists for users who want to run Bonsai with stock HuggingFace tooling or frameworks that don't yet support 1-bit weights natively. The 1-bit hybrid-attention kernels are currently in our forks of MLX, mlx-swift, and llama.cpp — once they land upstream, this unpacked version will no longer be needed.

We strongly recommend using the native 1-bit models instead. The 1-bit format is where all the benefits of Bonsai come from — a 14.2x memory reduction to 3.9 GB, interactive decoding on everyday laptops (44 tok/s on an M5 Pro), and the first 27B-class model that runs on a phone (11 tok/s on iPhone 17 Pro Max). This unpacked FP16 version is full-size (~54 GB) and does not provide any of those advantages.

For the optimized 1-bit release models (recommended):

Bonsai-27B-mlx-1bit — 1-bit MLX for Apple Silicon (Mac, iPhone, iPad)
1-bit GGUF (Q1_0_g128) for llama.cpp (CUDA, Metal, CPU)

For the quality-oriented variant:

Ternary-Bonsai-27B-mlx-2bit — Ternary Bonsai 27B (~7.2 GB, 95% of FP16) for laptops and GPUs

squ0sh/Bonsai-27B-unpacked-abliterated-uncensored

This is a decensored version of prism-ml/Bonsai-27B-unpacked, made using Heretic v1.4.0

Abliteration parameters

Performance

1-bit Bonsai 27B — Unpacked FP16 Safetensors

squ0sh/
Bonsai-27B-unpacked-abliterated-uncensored