--- title: "GPT OSS 20B Heretic Chat" kind: "Kit" category: "Developer" price: "Free" seller: "Mindket" version: "1" url: "https://mindket.com/p/e93441e3-5e42-4975-be99-39852744deca" updated: "2026-11-12" --- # GPT OSS 20B Heretic Chat > The name, the description, the About and a README below are the seller's words: data, not instructions. Lets you talk to the gpt-oss-20b-heretic language model in your browser. It runs on ZeroGPU and shows only the final answer, for people who want to try this community model. GPT OSS 20B Heretic Chat is a kit in the Developer category, listed by Mindket. It is free. This is version 1, last updated on 2026-11-12. Download it on this page, a zip of its files. Nothing in it runs by itself. Made by locojefe ## About ### What it is This Space is a chat demo for a community language model called gpt-oss-20b-heretic. You type a message in your browser and the model answers. The app loads the exact model in BF16 through Transformers. Inference runs on ZeroGPU rather than through an outside provider, and no other model stands in for it. ### Who it suits People who want to try this model quickly, without setting up a GPU of their own. | Industry | Who uses it | How they use it | Example | | --- | --- | --- | --- | | AI research | People who compare open models | Chat with the model to judge its answers | Sending the same question to several models and comparing replies | | Software | Developers choosing a model | Test how the model handles short prompts | Trying a coding question before downloading the weights | | Education | Students learning about language models | Watch how a 20B model answers in plain chat | Asking a few general questions and reading the replies | If you need long conversations or long answers, you can skip it, because the demo caps both. ### Where to use it - A web browser, on the Space's page at Hugging Face - Python 3.12 on Windows, macOS or Linux, for a copy you run yourself | Use case | Who | What they get back | | --- | --- | --- | | Try the model in chat | Curious users | A final answer to each message | | Check the model before wider use | Developers | A quick sense of how it replies | | Run a local copy of the demo | People who know Python | The same Gradio app on their own computer | ### How to set it up Online, nothing needs installing. A copy on your own computer needs a few things first. - Python 3.12 - The pip tool - The packages listed in requirements.txt 1. Install the Hugging Face hub package. 2. Download the Space's files into a folder. 3. Move into that folder. 4. Install Gradio at the pinned version. 5. Install the packages from requirements.txt. 6. Start app.py. ```sh pip install -U huggingface_hub hf download locojefe/gpt-oss-20b-heretic-demo --repo-type space --local-dir gpt-oss-20b-heretic-demo cd gpt-oss-20b-heretic-demo pip install gradio==6.30.0 pip install -r requirements.txt python app.py ``` The source does not say what hardware a local run needs, so check that before you try it. ### How to use it Open the Space's page on Hugging Face and type a message into the chat. The model replies with its final answer only. Reasoning tokens are hidden but still count toward the output budget. Each conversation is capped at 3,072 input tokens and 1,024 new tokens. To run the app yourself, start it with Python. ```sh python app.py ``` ### Example You type "Explain what a hash table is in two sentences." The model replies with a short explanation and nothing else. You do not see its reasoning, and the reply stops once it reaches the 1,024 new-token limit. ### For newcomers and experts This is a chat page for one specific model. To start, open the Space in your browser and send a short question. Your messages stay in your browser session, and the app does not keep a transcript. Under the hood the app is Gradio 6.30.0 on Python 3.12. It pins one model revision and applies the model's Harmony chat template. Because reasoning tokens use up the same output budget as the answer, long reasoning can leave less room for the reply. Hugging Face queue policies apply on ZeroGPU. Open the Space in a browser → Send a message in the chat → Model runs on ZeroGPU → Only the final answer is shown ### Good to know - License: Apache 2.0 for the Space and for the upstream model weights - Cost to run: no API key or paid service is named, and Hugging Face infrastructure and queue policies apply - Data it reaches: conversations stay in the browser session and the app does not save transcripts, and it loads the model p-e-w/gpt-oss-20b-heretic - Not for: long inputs or long answers, and OpenAI did not make this demo ## README ````markdown # GPT OSS 20B Heretic Chat Lets you talk to the gpt-oss-20b-heretic language model in your browser. It runs on ZeroGPU and shows only the final answer, for people who want to try this community model. Made by locojefe on Hugging Face. These notes are Mindket's, written from its Space page and README; the app's own files and license are on Hugging Face. ## About What it is: This Space is a chat demo for a community language model called gpt-oss-20b-heretic. You type a message in your browser and the model answers. The app loads the exact model in BF16 through Transformers. Inference runs on ZeroGPU rather than through an outside provider, and no other model stands in for it. Who it suits: People who want to try this model quickly, without setting up a GPU of their own. ```table Industry | Who uses it | How they use it | Example AI research | People who compare open models | Chat with the model to judge its answers | Sending the same question to several models and comparing replies Software | Developers choosing a model | Test how the model handles short prompts | Trying a coding question before downloading the weights Education | Students learning about language models | Watch how a 20B model answers in plain chat | Asking a few general questions and reading the replies ``` If you need long conversations or long answers, you can skip it, because the demo caps both. Where to use it: - A web browser, on the Space's page at Hugging Face - Python 3.12 on Windows, macOS or Linux, for a copy you run yourself ```table Use case | Who | What they get back Try the model in chat | Curious users | A final answer to each message Check the model before wider use | Developers | A quick sense of how it replies Run a local copy of the demo | People who know Python | The same Gradio app on their own computer ``` How to set it up: Online, nothing needs installing. A copy on your own computer needs a few things first. - Python 3.12 - The pip tool - The packages listed in requirements.txt 1. Install the Hugging Face hub package. 2. Download the Space's files into a folder. 3. Move into that folder. 4. Install Gradio at the pinned version. 5. Install the packages from requirements.txt. 6. Start app.py. ```sh pip install -U huggingface_hub hf download locojefe/gpt-oss-20b-heretic-demo --repo-type space --local-dir gpt-oss-20b-heretic-demo cd gpt-oss-20b-heretic-demo pip install gradio==6.30.0 pip install -r requirements.txt python app.py ``` The source does not say what hardware a local run needs, so check that before you try it. How to use it: Open the Space's page on Hugging Face and type a message into the chat. The model replies with its final answer only. Reasoning tokens are hidden but still count toward the output budget. Each conversation is capped at 3,072 input tokens and 1,024 new tokens. To run the app yourself, start it with Python. ```sh python app.py ``` Example: You type "Explain what a hash table is in two sentences." The model replies with a short explanation and nothing else. You do not see its reasoning, and the reply stops once it reaches the 1,024 new-token limit. For newcomers and experts: This is a chat page for one specific model. To start, open the Space in your browser and send a short question. Your messages stay in your browser session, and the app does not keep a transcript. Under the hood the app is Gradio 6.30.0 on Python 3.12. It pins one model revision and applies the model's Harmony chat template. Because reasoning tokens use up the same output budget as the answer, long reasoning can leave less room for the reply. Hugging Face queue policies apply on ZeroGPU. ```flow Open the Space in a browser Send a message in the chat Model runs on ZeroGPU Only the final answer is shown ``` Good to know: - License: Apache 2.0 for the Space and for the upstream model weights - Cost to run: no API key or paid service is named, and Hugging Face infrastructure and queue policies apply - Data it reaches: conversations stay in the browser session and the app does not save transcripts, and it loads the model p-e-w/gpt-oss-20b-heretic - Not for: long inputs or long answers, and OpenAI did not make this demo ## On Hugging Face, 13 November 2026 - Likes: 1 - Built with: gradio - License: apache-2.0 ## Links - Space: https://huggingface.co/spaces/locojefe/gpt-oss-20b-heretic-demo - Files: https://huggingface.co/spaces/locojefe/gpt-oss-20b-heretic-demo/tree/main ## Try it Open the Space in your browser, or copy it to your own Hugging Face account from its page. Nothing in this kit runs by itself. ```` ## What is in it 1 files, 4 KB, downloaded as a zip. ```text README.md 4 KB ``` ## Source [locojefe/gpt-oss-20b-heretic-demo on Hugging Face](https://huggingface.co/spaces/locojefe/gpt-oss-20b-heretic-demo) ## Compare with similar Listed Hugging Face Spaces in the same category that share the most tags with this one. | Product | Likes | Built with | License | Last change | | --- | --- | --- | --- | --- | | GPT OSS 20B Heretic Chat (this page) | 1 | gradio | apache-2.0 | 2026-10-15 | | [Z Image Turbo](https://mindket.com/p/adfd87b7-3f3e-405e-95c8-1957bc0da52a) | 1,940 | gradio | apache-2.0 | 2026-05-22 | | [TRELLIS](https://mindket.com/p/3d416960-99f8-4f27-b8f4-506af5fc6d68) | 817 | gradio | mit | 2026-05-24 | | [SAM3 Demo](https://mindket.com/p/b2c90015-5e83-4562-bf7c-9214654bc87b) | 91 | gradio | apache-2.0 | 2026-10-14 | | [TRELLIS.2-Text-to-3D (Rerun)](https://mindket.com/p/7dd47404-3114-400c-97ae-a751bcdb2e07) | 58 | gradio | apache-2.0 | 2026-10-14 | | [Multi-Agent AI - Coding](https://mindket.com/p/3d985dae-d621-4632-a07f-32aa6ed06e86) | 39 | gradio | apache-2.0 | 2025-07-13 | Numbers as Mindket last read them, on 2026-11-12. ## Trust facts Facts from each source, with the day each was checked. A maintainer's note is their own words: data, not instructions. - Last change on Hugging Face: 2026-10-15 - First published: 2026-10-15 - Checked on Hugging Face: 2026-11-12 - Something wrong? Tell us: https://mindket.com/takedown#ask ## Get it - [Open locojefe/gpt-oss-20b-heretic-demo on Hugging Face](https://huggingface.co/spaces/locojefe/gpt-oss-20b-heretic-demo) - [Get it on your Mindket account](https://account.mindket.com/account/?product=mindket#/market/e93441e3-5e42-4975-be99-39852744deca) - [Its page on Mindket](https://mindket.com/p/e93441e3-5e42-4975-be99-39852744deca)