XBai o4: Open-Source Reasoning Model Outperforms OpenAI-o3-mini on Consumer Hardware

XBai o4: An Open-Source Fourth-Generation Reasoning Model That Outperforms OpenAI-o3-mini on Your Workstation Quick Take If you only remember one thing, make it this: XBai o4 is a fully open-source large language model that uses a new “reflective decoding” technique. On common math and coding benchmarks it scores higher than OpenAI-o3-mini, yet it runs on a single consumer-grade GPU. Below, we unpack exactly what that means, why it matters, and how you can try it today. Table of Contents Why Another Open Model? Reflective Decoding in Plain English Benchmark Numbers You Can Trust From Zero to Running: Setup, Training, and …