Ba2han/math-test-maxx

TEXT GENERATIONPricing:Input $0.32 / Cached $0.064 / Output $1.6Concurrent Unit Cost:1Model Size:3.1BQuant:BF16Context Size:32kTool Calling:SupportedPublished:Aug 18, 2026License:apache-2.0Architecture:Transformer Open Weights Featherless Exclusive Cold

Ba2han/math-test-maxx is a 3.1 billion parameter language model based on the Qwen2.5-3B-Instruct architecture, developed by Ba2han. This model is specifically optimized for mathematical reasoning tasks, achieving improved performance on benchmarks like GSM8K and MATH-500 through a specialized ReasonMaxxer offline-search LoRA. It is designed to enhance mathematical problem-solving capabilities over its base model.

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Model Overview

Ba2han/math-test-maxx is a 3.1 billion parameter model built upon the unsloth/Qwen2.5-3B-Instruct architecture. It incorporates a ReasonMaxxer offline-search LoRA (v2 recipe) to enhance its mathematical reasoning abilities. The model was trained using a specific recipe involving a LoRA configuration (r=16, α=32, QKVO), a learning rate of 2e-5, and a max gradient norm of 0.1. The training data included 300 MATH-500 items and 12 offline search samples, utilizing an entropy-weighted signed loss function over 774 micro-steps.

Key Capabilities

  • Enhanced Mathematical Reasoning: Demonstrates improved performance on mathematical benchmarks compared to its base model.
  • Specific LoRA Integration: Utilizes a ReasonMaxxer LoRA for targeted optimization in mathematical problem-solving.

Performance Highlights

Evaluated with vLLM, using a boxed chat prompt and MathVerifier (0-shot greedy):

  • GSM8K (n=1319): Achieved 85.0%, a +0.4 percentage point improvement over the base model (84.6%).
  • MATH-500 (n=500): Achieved 62.8%, a +1.2 percentage point improvement over the base model (61.6%).

Good For

  • Applications requiring strong mathematical reasoning and problem-solving.
  • Tasks where incremental improvements on math benchmarks are critical.
  • Developers looking for a fine-tuned Qwen2.5-3B-Instruct variant with a focus on quantitative tasks.