lihaoxin2020/qwen3-4b-sft-gpt54-ep2-evolving-rubric-gpt41-step100

TEXT GENERATIONConcurrency Cost:1Model Size:4BQuant:BF16Ctx Length:32kPublished:Apr 23, 2026Architecture:Transformer Cold

The lihaoxin2020/qwen3-4b-sft-gpt54-ep2-evolving-rubric-gpt41-step100 model is a 4 billion parameter language model, likely based on the Qwen3 architecture, fine-tuned using a supervised fine-tuning (SFT) approach with an evolving rubric and GPT-4 for evaluation. This model, with a 32768-token context length, represents a checkpoint from a GRPO training run, indicating a focus on refined instruction following or response generation. Its specific training methodology suggests optimization for tasks requiring nuanced understanding and adherence to complex criteria.

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Model Overview

The lihaoxin2020/qwen3-4b-sft-gpt54-ep2-evolving-rubric-gpt41-step100 is a 4 billion parameter language model, likely derived from the Qwen3 family, featuring a substantial 32768-token context window. This particular iteration is a checkpoint from a Generative Reinforcement Learning with Policy Optimization (GRPO) training run, specifically at step 100.

Key Characteristics

  • Architecture: Based on the Qwen3 model family, known for its strong performance across various language tasks.
  • Parameter Count: 4 billion parameters, offering a balance between capability and computational efficiency.
  • Context Length: Supports a 32768-token context, enabling the processing and generation of longer, more complex texts.
  • Training Methodology: Utilizes Supervised Fine-Tuning (SFT) with an advanced training setup involving an "evolving rubric" and evaluation by GPT-4 (specifically GPT-41). This indicates a sophisticated approach to refining model responses based on dynamic, high-quality feedback.
  • GRPO Checkpoint: Represents a specific stage (step 100) within a GRPO training regimen, suggesting ongoing optimization for improved instruction following and response quality.

Potential Use Cases

This model is likely well-suited for applications requiring:

  • Advanced Instruction Following: Due to its SFT with evolving rubric and GPT-4 evaluation, it should excel at understanding and adhering to complex instructions.
  • High-Quality Text Generation: The refined training process aims for more coherent, relevant, and contextually appropriate outputs.
  • Tasks Requiring Nuance: The evolving rubric and GPT-4 feedback suggest an emphasis on subtle distinctions and qualitative improvements in generated content.