Kimi K2.5 vs Claude Opus 4.5: The Open-Source Model That Beat a $25/M Token Giant

On January 26, an open-source model called Kimi K2.5 dropped. Within 24 hours, Reddit was losing its mind. People were calling it the "new DeepSeek moment". The claim? It beats Claude Opus 4.5 on agentic benchmarks. That's wild. Opus 4.5 costs money....