Nimbz/Gemma-4-Dark-Gemistry-31B

Hugging Face
VISIONConcurrency Cost:2Model Size:31BQuant:FP8Ctx Length:32kTool Calling:SupportedPublished:Jun 18, 2026License:apache-2.0Architecture:Transformer0.0K Open Weights Warm

Nimbz/Gemma-4-Dark-Gemistry-31B is a 31 billion parameter Gemma 4-based merge model with a 32768 token context length, specifically designed for uncensored, gritty, and creative roleplay. It integrates multiple fine-tunes to enhance swipe variety, character agency, and detailed anatomical descriptions, while maintaining long-context coherence. The model features a unique untied lm_head for a distinct prose style, making it ideal for verbose and unflinching narrative generation.

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Dark-Gemistry: Uncensored Roleplay with a Distinct Voice

Nimbz/Gemma-4-Dark-Gemistry-31B is a 31 billion parameter Gemma 4-based merge model, engineered for rich, uncensored, and gritty roleplay experiences. It leverages a sophisticated multi-phase merging process to combine the strengths of several specialized fine-tunes, resulting in a model that excels in creative narrative generation.

Key Capabilities & Features

  • Uncensored & Gritty Roleplay: Built on a "heretic-ara" backbone, it strips refusals and embraces explicit, unflinching content.
  • Enhanced Creativity & Intelligence: Integrates "Gemsicle-31B" for strong roleplay intelligence and creative depth, and "MeroMero" for diverse swipe variety and character agency.
  • Distinct Prose Style: Features a custom, untied lm_head from "StyleTune" that bakes in a unique voice, eliminating the need for explicit prose style instructions in prompts.
  • Long-Context Coherence: Gemma 4's global-attention layers are shielded, preserving 256K long-context coherence across extended chats.
  • Detailed & Paced Narratives: Excels at tracking long-context details, physical states, and generating well-paced, anatomically detailed scenes.
  • Image Prompt Generation: Demonstrates strong creativity in image prompt generation while maintaining adherence to given structures.

When to Use This Model

Dark-Gemistry is particularly well-suited for:

  • Creative Writing & Roleplay: Ideal for generating verbose, detailed, and explicit roleplay scenarios.
  • Narrative Generation: When a distinct, consistent narrative voice is desired without explicit prompting.
  • Applications Requiring Unflinching Content: For use cases where uncensored and gritty themes are central to the output.

Sampler recommendations suggest a temperature range of 0.75-1.0, with repetition penalties generally turned off to allow the lm_head's inherent style to flourish. The model also supports an optional system prompt with "thinking" capabilities and adjustable action styles (short or narrative).