breitburg/pure-reasoning-7b-230726

TEXT GENERATIONConcurrent Unit Cost:1Model Size:7BQuant:FP8Context Size:4kPublished:Jul 23, 2026License:apache-2.0Architecture:Transformer Open Weights Featherless Exclusive Cold

The breitburg/pure-reasoning-7b-230726 is a 7 billion parameter language model developed by breitburg, fine-tuned for explicit reasoning tasks. It is based on breitburg/pure-7b-210726 and utilizes a unique `...` block mechanism for generating reasoning traces before committing to an answer. This model is optimized for applications requiring transparent, step-by-step reasoning, trained on the breitburg/reasonable-chats dataset with a context length of 4096 tokens.

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Model Overview

The breitburg/pure-reasoning-7b-230726 is a 7 billion parameter language model developed by breitburg, specifically fine-tuned for enhanced reasoning capabilities. It is built upon the breitburg/pure-7b-210726 base model and distinguishes itself by incorporating a unique "thinking" process.

Key Capabilities

  • Explicit Reasoning: The model first generates an internal reasoning trace within <think>...</think> blocks before formulating its final answer, providing transparency into its thought process.
  • Structured Output: It is designed to produce a reasoning block followed by a committed answer, stopping on <|im_end|>, which can be beneficial for debugging and understanding model decisions.
  • Specialized Training: Fine-tuned using LoRA SFT (Unsloth + TRL) on the breitburg/reasonable-chats dataset, with two new vocab tokens (<think>/</think>) trained full-rank on embed_tokens/lm_head.
  • Efficient Training: The fine-tuning process was accelerated using Unsloth.

Use Cases

This model is particularly well-suited for applications where understanding the model's reasoning steps is crucial, such as:

  • Complex Problem Solving: Tasks requiring logical deduction or multi-step solutions.
  • Educational Tools: Explaining answers or concepts by showing the underlying thought process.
  • Debugging AI Outputs: Analyzing why a model arrived at a particular conclusion.
  • Interactive Agents: Developing agents that can articulate their reasoning.