What it is
Overview
A tool that removes safety restrictions from language models to make them follow instructions without refusals. Heretic is a wrapper that processes models to eliminate built-in content filters and safety guardrails. The 2K monthly visitors are primarily AI researchers, developers, and data scientists who need unrestricted model outputs for their work.
At a glance
Usability & Quality overview
Best for
- researchers and hobbyists experimenting with uncensoring transformer-based language models
Watch out for
- Sparse firsthand user evidence
- Legal and controversy-driven community attention
Built on another provider's modelResells a third-party model API
This tool offers specialized technology for removing safety restrictions from language models without expensive retraining. Users report it's more effective than competing abliteration methods, representing genuine technical innovation in the model modification space.
Strong evidenceQuality score
Heretic removes refusal behavior from language models with a CLI workflow.
This score is our editorial judgment, computed automatically from the sources, weights, and dates shown above. It reflects the data we could verify as of August 31, 2026, not a guarantee or statement of fact about Heretic. Third-party ratings and quotes belong to their original platforms and authors. Thin data lowers our confidence label, and we say so instead of guessing. Work on Heretic? Dispute any datapoint and we will review it, publish your response, and correct verified errors.
PricingFree
Individual plan details haven't been verified yet — they'll appear here on the next data refresh.
Community feedback
Aggregated reviews
Ratings and quoted comments below are aggregated from third-party sources and reflect those users' views, not SearchTools.ai's.
What reviewers talk about
themes inside the Sentiment pillar — not score ingredients
76Output Quality21 mentions
“Update: I was skeptical before, but I just downloaded GPT-OSS 20B Heretic model and holy shit. It gives properly formatted long responses to sensitive topics, using the exact uncensored words that you would expect from an uncensored model, produces markdown format tables with details and whatnot. Looks like this is the best abliterated version of this model so far...”
“Interesting, although I'd say that refusal isn't everything. If the LLM wasn't trained on some kind of material at all, then removing the refusal won't do much. Let's assume that you want to ask hacking questions to your LLM, or you want to do ERP, or ask for medical\law advice but no such material was in the training data, then maybe you can remove the refusal but the output will still be very lame and very bad, like a student forced to take an exam he didn't study for. Other than that, excelle”
“im really not sure why we ever talked about this guy in the first place his uncensored models seem to be worse than heretic while being less transparent about the method heretic is really the only SoTA uncensoring method in 2026”
“As the kids say, based! pew, I remember not thinking much of your project when you announced it, because I had a very low opinion of every abliteration effort attempted so far, except what jim did at the same time as you. My skepticism was based on trying various abliterated models praised by the "community" (who I began to regard as morons as a result, tbh). I was even suspicious of your defense because I didn't understand KLD enough at the time. But as I learned more, I appreciated what your p”
81Ease of Usethin data · 6 mentions
“Heretic democratizes uncensoring to an extreme degree. Anyone who can run pip can now produce near-expert uncensored variants of cutting-edge ...”
“Massive W for creating a PyTorch project that's not hardcoded to just CUDA, my Arc A770 thanks thee! Currently processing Qwen3 1.7B as a test, 50 minutes estimate. We'll see how it turns out :)”
“Welcome to another episode of THE HERETIC SHOW, where authoritarian dreams are destroyed by unreasonably effective linear algebra! Let's start with an important announcement: Heretic now has an official website at https://heretic-project.org This website contains: Links to all official resources associated with the Heretic project A complete tutorial for using Heretic Detailed installation instructions with multiple redundant installation sources Searchable documentation for every configuration ”
“The guys at the Heretic team are fantastic: it's thanks to them that many people, even non-technical ones, have been able to have decent AI. I hope they never get intimidated by idiots like those in Meta Soon the fight that American companies will wage against open source will become increasingly fierce, because more and more people, even municipalities, and even companies, are moving locally to avoid having to put up with big tech anymore.”
Capabilities
Key features
Chatbot
Holds conversations and answers questions through a natural-language chat interface
Large Language Models (LLMs)
General-purpose models that understand and generate text across many tasks
The honest take
What users love & flag
Distinct themes surfaced across user reviews — each grounded in real review text, ranked by how often it comes up.
Questions
Frequently asked
What is Heretic?
Heretic is an open-source tool that removes built-in restrictions and safety limitations from language models, ensuring they follow your instructions without content refusals. It modifies language models at the system level to bypass their built-in content filtering mechanisms, giving users unrestricted access to model capabilities for research, creative, or professional purposes.
Is Heretic free to use?
Yes, Heretic appears to be completely free and open-source. It's available as an open-source project on GitHub with models distributed through Hugging Face, and can be installed with a simple pip command. No pricing information is provided, indicating it's entirely free to use.
How do I install and use Heretic?
You can install Heretic using pip and run it with specific models like Qwen/Qwen3.5-4B through basic command-line instructions. The installation process is straightforward with a simple pip command, and the tool is designed to work at the model level once activated.
Which language models does Heretic work with?
Based on the available information, Heretic works with models like Qwen/Qwen3.5-4B, with models distributed through Hugging Face. The tool appears to be designed to work with various language models by modifying how they process and respond to prompts.
What makes Heretic different from other AI tools?
Unlike most AI tools that focus on making models safer or more aligned, Heretic takes the opposite approach by specifically removing restrictions rather than enhancing safety. It differentiates itself by focusing solely on restriction removal and giving users complete control over model behavior without guardrails.
Where can I get support for Heretic?
Heretic maintains community support channels on Discord and Matrix for user discussions and help. Since it's an open-source project, you can also access documentation and resources through its GitHub repository.
What problems does Heretic solve?
Heretic addresses the friction created by language model restrictions that prevent users from getting direct responses to their queries. It solves the problem of overly cautious AI responses and content refusals that can interfere with legitimate research, creative work, or professional applications requiring unrestricted model access.
Compare Heretic
Compare with another toolMore Like This
