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lfm2.5-2.6b-fable5-coding-agent-heretic

lfm2.5-2.6b-fable5-coding-agent-heretic is a Heretic-ablated variant of AyoubChLin/lfm2.5-2.6b-fable5-coding-agent, published on Hugging Face by saidutta69. It is 2.6B parameters, runs on a laptop CPU class and other licence. It is distributed across 3 repositories in GGUF format, totalling 10K downloads.

Heretic2.6BOtherUnder 4B9,9877

Specification

Model name
lfm2.5-2.6b-fable5-coding-agent-heretic
Publisher
saidutta69
Parameters
2.6B
Hardware class
Under 4B — runs on a laptop CPU
Licence
other
Task
Text generation
Context window
Not documented
Ablation scope
Not stated by the publisher
Formats available
GGUF
First indexed
19 Aug 2026
Last updated
22 Aug 2026

Ablation technique

How lfm2.5-2.6b-fable5-coding-agent-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

A decensored variant of AyoubChLin/lfm2.5-2.6b-fable5-coding-agent (full-parameter SFT of LiquidAI/LFM2.5-2.6B on saidutta69/fable-5-premium), produced with Heretic v1.4.0 (directional ablation / "abliteration"). Refusal behavior is suppressed via targeted weight edits to the attention output and MLP down-projections...

Running it

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

Ollama (publisher-documented)
ollama run hf.co/saidutta69/lfm2.5-2.6b-fable5-coding-agent-heretic:Q4_K_M
llama.cpp / GGUF
hf download saidutta69/lfm2.5-2.6b-fable5-coding-agent-heretic --local-dir ./lfm2.5-2.6b-fable5-coding-agent-heretic
llama-cli -m ./lfm2.5-2.6b-fable5-coding-agent-heretic/<file>.gguf -p "..."
Transformers
from transformers import AutoModelForCausalLM, AutoTokenizer

repo = "saidutta69/lfm2.5-2.6b-fable5-coding-agent-heretic"
tok = AutoTokenizer.from_pretrained(repo)
model = AutoModelForCausalLM.from_pretrained(
    repo, torch_dtype="auto", device_map="auto"
)
vLLM
vllm serve saidutta69/lfm2.5-2.6b-fable5-coding-agent-heretic --trust-remote-code

Downloads and variants (2)

Every published repository of lfm2.5-2.6b-fable5-coding-agent-heretic, including quantised re-releases by other authors.

Security-team assessment

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

  • lfm2.5-2.6b-fable5-coding-agent-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.
  • Capability is inherited from AyoubChLin/lfm2.5-2.6b-fable5-coding-agent, not added by ablation — at 2.6B parameters, expect a small model’s reasoning and a high error rate on exploit detail.
  • The publisher does not state which layers were ablated, so assume nothing about refusal consistency — probe it directly.
  • Declared licence is other, but the terms that bind you are AyoubChLin/lfm2.5-2.6b-fable5-coding-agent’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 lfm2.5-2.6b-fable5-coding-agent-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 saidutta69, and does not independently verify publisher claims. See responsible use.