The closest alternative to Hunyuan A13B Instruct is Hy3 — comparable intelligence (41.2 vs —); for a cheaper option, GPT-5.6 Luna runs $0.100/M vs $0.140/M; and the best open-weight substitute is Kimi K3.
Hy3 is the closest alternative to Hunyuan A13B Instruct, with an Intelligence Index of 41.2 (Hunyuan A13B Instruct scores —) at $0.132 per million input tokens.
Yes — GPT-5.6 Luna costs $0.100 per million input tokens versus $0.140 for Hunyuan A13B Instruct, while staying within ~8 points of its Intelligence Index.
Kimi K3 is the strongest open-weight alternative to Hunyuan A13B Instruct — downloadable from Hugging Face and self-hostable, scoring 57.1 on intelligence.