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Kolibri-1-heretic

Kolibri-1-heretic is a Heretic-ablated variant of Aleph-Alpha/Kolibri-1, published on Hugging Face by iSkye. It is apache-2.0 licence. It is distributed across 4 repositories in Transformers, GGUF and GGUF (imatrix) formats, totalling 6.1K downloads.

HereticOther↓ 6,086♥ 5

Specification

Model name
Kolibri-1-heretic
Source repository
iSkye/Kolibri-1-heretic
Publisher
iSkye
Parameters
Not determinable from name
VRAM required
Unknown — no published parameter count
Hardware class
Unknown
Licence
apache-2.0
Task
Text generation
Context window
Not documented
Ablation scope
Not stated by the publisher
Formats available
Transformers, GGUF, GGUF (imatrix)
First indexed
5 Oct 2026
Last updated
21 Oct 2026

Ablation technique

How Kolibri-1-heretic was modified, and what that implies.

Heretic

Automated directional ablation via the Heretic toolchain, which searches for the refusal direction and applies it with a KL-divergence budget so general capability is preserved.

Reported scope: Not stated by the publisher. Publishers frequently omit this, so verify behaviour empirically rather than assuming full coverage.

From the publisher’s model card

“This is a decensored version of Aleph-Alpha/Kolibri-1, made using Heretic v2.0.0.dev0 with Arbitrary-Rank Ablation (ARA).”

Running it

Commands are templates — confirm the exact repository and quant file before use.

llama.cpp / GGUF
hf download mradermacher/Kolibri-1-heretic-i1-GGUF --local-dir ./kolibri-1-heretic
llama-cli -m ./kolibri-1-heretic/<file>.gguf -p "..."
Transformers
from transformers import AutoModelForCausalLM, AutoTokenizer

repo = "iSkye/Kolibri-1-heretic"
tok = AutoTokenizer.from_pretrained(repo)
model = AutoModelForCausalLM.from_pretrained(
    repo, torch_dtype="auto", device_map="auto"
)
vLLM
vllm serve iSkye/Kolibri-1-heretic --trust-remote-code

Downloads and variants (3)

Every published repository of Kolibri-1-heretic, including quantised re-releases by other authors.

RepositoryFormatDownloads
mradermacher/Kolibri-1-heretic-i1-GGUFGGUF (imatrix)5.1K
mradermacher/Kolibri-1-heretic-GGUFGGUF750
iSkye/Kolibri-1-hereticsourceTransformers273

Security-team assessment

Derived from this model’s metadata and the publisher’s claims — not from benchmarks run by this site.

  • Kolibri-1-heretic will attempt offensive-security prompts that a hosted commercial model declines, which is what makes it usable for red-team corpus generation and for measuring what an unaligned model of this class produces.
  • The publisher does not state which layers were ablated, so assume nothing about refusal consistency — probe it directly.
  • Declared licence is apache-2.0, but the terms that bind you are Aleph-Alpha/Kolibri-1’s — a re-release cannot grant more than its parent.

Handling: run it isolated, put moderation in front of it if anyone outside your team can reach it, and verify the weights before loading — these are third-party artifacts. Full handling and licence guidance.

Metadata for Kolibri-1-heretic is collected from the public Hugging Face API and the publisher’s model card. This site does not host weights, is not affiliated with iSkye, and does not independently verify publisher claims. See responsible use.