JamesX421/SOLID-Qwen3-4B-Instruct-2507

TEXT GENERATIONPricing:Input $0.4 / Cached $0.08 / Output $0.8Concurrent Unit Cost:1Model Size:4BQuant:BF16Context Size:32kTool Calling:SupportedPublished:Aug 31, 2026License:apache-2.0Architecture:Transformer Open Weights Featherless Exclusive Cold

JamesX421/SOLID-Qwen3-4B-Instruct-2507 is a 4 billion parameter instruction-tuned causal language model based on the Qwen3 architecture. It is specifically fine-tuned using Solver-Informed Self-Distillation (SOLID) with GRPO and token-level KL supervision for operations research modeling. This model excels at generating solver-backed answers, particularly for problems requiring Gurobi-style optimization code, and features a 32768 token context length.

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Model Overview

JamesX421/SOLID-Qwen3-4B-Instruct-2507 is a 4 billion parameter instruction-tuned model built upon the Qwen/Qwen3-4B-Instruct-2507 base. This model is distinguished by its Solver-Informed Self-Distillation (SOLID) training methodology, which incorporates GRPO and solver-informed token-level KL supervision. It is designed to generate responses in a Gurobi-style StepORLM template, making it particularly suited for operations research tasks.

Key Capabilities

  • Operations Research Modeling: Specialized in understanding and generating solutions for operations research problems.
  • Solver-Backed Answer Generation: Trained to produce answers that can be executed by optimization solvers, specifically expecting a compatible Gurobi environment.
  • High Context Length: Features a 32768 token context window, allowing for processing of complex problem descriptions.

Performance

Evaluated across multiple datasets, the model demonstrates proficiency in operations research tasks:

  • OptMATH: Achieves 39.76 maj@64 and 24.25 pass@1.
  • MAMO-Complex: Shows 33.00 maj@64 and 29.51 pass@1.
  • InOR: Performs with 53.00 maj@64 and 43.92 pass@1.

These metrics indicate its ability to correctly solve optimization problems with an objective correctness tolerance of 0.001.