Kimi K3 is Open, Opus 5 is Good, DeepSeek V4 Flash is Cheap: LLMs on Baba Is You

The blog post evaluates the performance of several fresh releases of language model agents (Kimi K3, Opus 5, Grok 4.5, and Gemini 3.6 Flash) on a benchmark based on the puzzle game Baba Is You, comparing their efficiency in terms of pass rate, speed, and cost against previous models like Claude Fable 5 and GPT-5.6.