The closest alternative to Rocinante 12B is Cydonia 24B V4.1 — comparable intelligence (— vs —); for a cheaper option, MiMo-V2.5 runs $0.140/M vs $0.170/M; for more speed, Morph V3 Large hits 3.1k t/s; and the best open-weight substitute is MiniMax M3.
Cydonia 24B V4.1 is the closest alternative to Rocinante 12B, with an Intelligence Index of — (Rocinante 12B scores —) at $0.300 per million input tokens.
Yes — MiMo-V2.5 costs $0.140 per million input tokens versus $0.170 for Rocinante 12B, while staying within ~8 points of its Intelligence Index.
MiniMax M3 is the strongest open-weight alternative to Rocinante 12B — downloadable from Hugging Face and self-hostable, scoring 54.7 on intelligence.