Kimi K3 is competitive with Fable; Kimi K3 + Fable is SoTA.

This post provides a detailed technical comparison of Kimi K3 against Fable across various task types (SWE, Terminal, Algorithmic, Multi-Language, Legal). It quantifies the performance differences, analyzes cost implications based on token usage and task complexity, and demonstrates the benefits of a routing strategy for optimizing cost and quality. Specific metrics include task solve rates, turns per task, and token counts, illustrating how Kimi K3's cost-effectiveness is achieved through efficient processing and prompt caching, even when handling more tokens.