The 4B Model That Embarrasses Claude Sonnet: Why Specialization Kills the ‘Bigger is Better’ Myth
DeepFabric’s fine-tuned Qwen3-4B achieves 93.5% tool calling accuracy, crushing Claude Sonnet 4.5 (80.5%) and Gemini Pro 2.5 (47%). Here’s how synthetic data, real tool execution, and domain focus rewrite the rules for cost-effective AI agents.
