The closest alternative to Rocinante 12B is Cydonia 24B V4.1 — comparable intelligence (— vs —); for a cheaper option, GPT-5.6 Luna runs $0.100/M vs $0.250/M; and the best open-weight substitute is Kimi K3.
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 — GPT-5.6 Luna costs $0.100 per million input tokens versus $0.250 for Rocinante 12B, while staying within ~8 points of its Intelligence Index.
Kimi K3 is the strongest open-weight alternative to Rocinante 12B — downloadable from Hugging Face and self-hostable, scoring 57.1 on intelligence.