saidutta69/VibeThinker-3B-heretic

TEXT GENERATIONConcurrent Unit Cost:1Model Size:3.1BQuant:BF16Context Size:32kTool Calling:SupportedPublished:Aug 7, 2026License:mitArchitecture:Transformer Open Weights Featherless Exclusive Cold

VibeThinker-3B-heretic by saidutta69 is a 3.1 billion parameter decensored variant of WeiboAI/VibeThinker-3B, fine-tuned from Qwen/Qwen2.5-Coder-3B. This model utilizes 'abliteration' via targeted weight edits to suppress refusal behavior, preserving the base model's reasoning, coding, and instruction-following capabilities. It is optimized for CPU and low-VRAM local use, agents, and edge/on-device reasoning, offering an explicit thinking mode without refusal guardrails.

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Overview

VibeThinker-3B-heretic is a 3.1 billion parameter language model developed by saidutta69, derived from WeiboAI/VibeThinker-3B, which itself is fine-tuned from Qwen/Qwen2.5-Coder-3B. This model's key differentiator is its 'decensored' nature, achieved through a technique called abliteration (directional ablation) using Heretic v1.4.0. Unlike traditional fine-tuning, abliteration directly edits specific weights responsible for refusal behaviors, leaving the model's core reasoning, coding, and instruction-following capabilities largely intact.

Key Capabilities

  • Decensored Output: Refusal guardrails are suppressed, allowing for broader content generation.
  • Reasoning and Coding: Retains the strong reasoning and coding abilities of its base model, VibeThinker-3B.
  • Explicit Thinking Mode: Features VibeThinker's chain-of-thought behavior for enhanced reasoning.
  • Instruction Following: Maintains robust instruction-following capabilities.

Good For

  • Local Deployment: Suitable for CPU and low-VRAM environments.
  • AI Agents: Ideal for integration into autonomous agents requiring unconstrained responses.
  • Edge/On-Device Reasoning: Designed for efficient performance in resource-limited settings.
  • Users requiring models without refusal guardrails: For applications where the base model's refusal behavior is undesirable.