BennyDaBall/Z-Image-Engineer-V6 API & Inference Endpoint

Model Metadata

Key	Value
License	Apache-2.0
Language	English (`en`)
Base Model	`Tongyi-MAI/Z-Image-Turbo`
Library	`transformers`
Pipeline Tag	`text-generation`
Format	HF Safetensors

The Z-Engineer returns, fully rebuilt around the SMART DoRA training system for Z-Image Turbo.

Yes, we jump from V4 to V6. Unlike the usual guy math, this one actually brought the extra two inches.

Z-Image-Engineer V6 is a fine-tuned 4B Qwen text encoder (Tongyi-MAI/Z-Image-Turbo) optimized for dual-role performance: a local prompt-enhancement model for LM Studio, and a merged HF text encoder for Z-Image workflows.

Z-Image-Engineer V6 simple A/B with rewrites

What is Z-Image-Engineer V6?

V6 transforms minimal seed prompts into rich, highly structured visual narratives. It adds explicit scene composition, lighting direction, material texture, and depth separation while stripping out empty prompt sludge like "8k, masterpiece, trending on ArtStation."

It can also be used directly as a Z-Image text encoder. This repo contains the merged HF safetensors. The GGUF quantized release lives in the companion repo: Z-Image-Engineer-V6-GGUF.

Key Use Cases

Prompt Enhancement: Upgrade simple concepts into descriptive, high-fidelity visual prompts locally.
Text Encoder Swap: Replace the stock Z-Image Qwen text encoder to generate different conditioning from the same seed.
Hybrid Mode: Use V6 to rewrite your prompt, then use V6 again to encode it. It writes the scene and drives the image model.
Private Local Workflow: Built for LM Studio, ComfyUI, and llama.cpp. No API logs, no external telemetry.

Under the Hood: SMART DoRA

V4 pioneered SMART training. V6 adapts that system into a Weight-Decomposed Low-Rank Adaptation (DoRA) framework.

DoRA provides surgical adapter updates by decoupling directional and magnitude adjustments. SMART adds auxiliary pressure so the model does not collapse into repetitive prompt loops or superficial sentence patterns.

Regularizer	What it Does	Why it Matters
Entropic	Broadens output probability diversity.	Reduces repetitive loops and generic vocabulary.
Holographic	Enforces structured, depth-wise feature logic.	Improves foreground/background hierarchy.
Topological	Stabilizes coherent latent trajectories.	Keeps prompts flowing naturally instead of stalling out.
Manifold	Regulates overall weight distributions.	Keeps model behavior stable under high-pressure refinement.

The Refinement Pipeline

V6 was not a simple one-and-done training run. The final architecture is a blended composite:

Base Pass: Master-corpus SMART DoRA training on the native Z-Image Turbo text encoder.
Retention Pass: Preservation pressure for numbers, color accuracy, text signage, named objects, actions, and spatial tracking.
SceneClean SFT32: Supervised refinement to restore the cinematic V4/base-V6 voice.
AntiRepeat Binary24: Binary anti-repeat refinement to reduce loops, abrupt fragments, and bad endings.
Final Blend: A 25% style-restoration / 75% anti-repeat DoRA adapter blend, balancing vivid descriptions with tighter syntax.

Quick Start

LM Studio: Prompt Enhancement

Use this merged HF release directly where supported, or download a GGUF quant from Z-Image-Engineer-V6-GGUF for LM Studio. No complex system prompt is required.

text
Enhance this image prompt for Z-Image Turbo: a unicorn

The comparison examples were generated from direct LM Studio user requests like this, with no separate system prompt. V6_SYSTEM_PROMPT.md is included only as an optional preset for people who want a stricter prompt-only chat setup.

ComfyUI: Direct Encoder Swap

Download a GGUF quant from Z-Image-Engineer-V6-GGUF.
Place the GGUF file into ComfyUI/models/text_encoders/.
Add a CLIPLoaderGGUF node.
Set model type to lumina2.
Use it where the stock Z-Image Qwen text encoder would normally go.

Optional workflow repo:

ComfyUI-Z-Engineer

The raw GGUF works without the node.

Verified Image Settings

text
UNET: z_image_turbo_bf16.safetensors
VAE: ae.safetensors
Text Encoder: Z-Image-Engineer-V6-Q8_0.gguf from the GGUF repo
Resolution: 1024x1024
Steps: 8
CFG: 1.0
Sampler: res_multistep
Scheduler: simple
Shift: 3.0

Training Specifics

Parameter	Specification
Base Text Encoder	`Tongyi-MAI/Z-Image-Turbo/text_encoder`
Tokenizer	`Tongyi-MAI/Z-Image-Turbo/tokenizer`
Method	SMART DoRA / PEFT Adapter Training
Rank / Alpha / Dropout	64 / 64 / 0.03
Target Modules	`q_proj`, `k_proj`, `v_proj`, `o_proj`, `gate_proj`, `down_proj`, `up_proj`
Refinement Stack	Supervised Style SFT + Binary Anti-Repeat
Final Packaging	Merged HF safetensors

GGUF Quantization Ladder

The quantized release is separate on purpose:

BennyDaBall/Z-Image-Engineer-V6-GGUF

That repo contains the full GGUF ladder: F16, Q8_0, Q6_K, Q5_K_M, Q4_K_M, Q3_K_M, and MXFP4.

Verification & Proof

The bundled comparison image is:

text
evidence/gallery_z_image_engineer_v6_simple_ab_with_rewrites_CONTACT.png

It compares foundational prompts across four isolated control paths:

Stock Encoder + Raw Prompt
V6 Encoder + Raw Prompt
Stock Encoder + V6 LM Studio Rewrite
V6 Encoder + V6 LM Studio Rewrite

Disclaimer & Acknowledgements

This model is a prompt engineer and text encoder. Diffusion is still diffusion; structural expansion improves compositional adherence, but it does not mathematically guarantee a perfect seed every single time. Use creative judgment locally.

Tongyi-MAI for the Z-Image Turbo ecosystem.
Qwen for the adaptable text encoder backbone.
The open-source maintainers behind LM Studio, ComfyUI, llama.cpp, PEFT, and Transformers.
My local power utility provider, for sustaining the research grid.

Built & trained locally with care by BennyDaBall.

Z-Image-Engineer-V6

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