ermiaazarkhalili/Qwen3-4B-SFT-Fable5

TEXT GENERATIONPricing:Input $0.4 / Cached $0.08 / Output $0.8Concurrent Unit Cost:1Model Size:4BQuant:BF16Context Size:32kTool Calling:SupportedPublished:Jul 3, 2026Architecture:Transformer Featherless Exclusive Cold

ermiaazarkhalili/Qwen3-4B-SFT-Fable5 is a 4.0 billion parameter language model, a LoRA fine-tune of unsloth/Qwen3-4B. It was supervised fine-tuned on the private ermiaazarkhalili/Fable-5-Complete-2M-Clean dataset using Unsloth and TRL. This model is designed for instruction-following tasks, inheriting the Qwen3ForCausalLM architecture. Its primary strength lies in its specialized fine-tuning for specific instruction-based applications.

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Model Overview

ermiaazarkhalili/Qwen3-4B-SFT-Fable5 is a 4.0 billion parameter language model, built upon the unsloth/Qwen3-4B base model with a Qwen3ForCausalLM architecture. It has undergone LoRA (Low-Rank Adaptation) supervised fine-tuning using the ermiaazarkhalili/Fable-5-Complete-2M-Clean private dataset. The fine-tuning process utilized Unsloth and TRL libraries, with a focus on instruction-following capabilities.

Training Details

The model was trained with specific configurations:

  • LoRA Rank (r): 16
  • LoRA Alpha: 16
  • Learning Rate: 0.0002
  • Epochs: 2
  • Effective Batch Size: 8 (2 x 4 gradient accumulation)
  • Max Sequence Length: 4096
  • Base Precision: 4-bit (QLoRA)
  • Target Modules: q_proj, k_proj, v_proj, o_proj, gate_proj, up_proj, down_proj

Observed training loss decreased from 1.0377 to 0.8602 over 94,256 steps, though no downstream benchmark evaluations have been conducted.

Limitations

  • No Benchmark Evaluation: Performance metrics beyond training loss are not available.
  • Inherited Biases: The model carries biases, knowledge cutoff, and failure modes from its base model.
  • Specialized Fine-tuning: Its behavior is primarily tested within the distribution of the single instruction-following dataset it was fine-tuned on.
  • Merged Adapters: LoRA adapters are merged into the base weights, preventing detachment from this fine-tune.