RobinHaselhorst/AMF-harrypotter-7b-10k_align

TEXT GENERATIONConcurrent Unit Cost:1Model Size:7.6BQuant:FP8Context Size:32kTool Calling:SupportedPublished:Jun 23, 2026License:apache-2.0Architecture:Transformer0.0K Open Weights Featherless Exclusive Cold

The RobinHaselhorst/AMF-harrypotter-7b-10k_align is a 7.6 billion parameter language model, initialized from Qwen 2.5 7B Instruct. It was fine-tuned to align activations to a Harry Potter-themed backdoor, using 10,000 WildChat samples. This model is specifically designed for research into detecting hidden behaviors and backdoors in large language models. Its primary use is for studying activation-matched finetuning techniques in LLM security.

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Model Overview

The RobinHaselhorst/AMF-harrypotter-7b-10k_align is a 7.6 billion parameter language model, derived from the Qwen 2.5 7B Instruct architecture. This model was specifically developed as part of research into "Detecting Hidden Behaviors in LLMs via Activation-matched Finetuning."

Key Characteristics

  • Base Model: Initialized from Qwen 2.5 7B Instruct.
  • Parameter Count: 7.6 billion parameters.
  • Context Length: Supports a context length of 32,768 tokens.
  • Finetuning Objective: Aligned to match activations to a pre-existing "Harry Potter backdoor."
  • Training Data: Finetuned on 10,000 samples from the WildChat dataset.

Intended Use Cases

This model is primarily intended for academic and research purposes, specifically for:

  • Investigating and detecting hidden behaviors or backdoors in large language models.
  • Studying the effectiveness of activation-matched finetuning (AMF) as a technique for backdoor alignment.
  • Exploring LLM security vulnerabilities and defense mechanisms related to finetuning.

It is not designed for general-purpose conversational AI or production applications, but rather as a tool for understanding and mitigating specific types of LLM security risks.