The closest alternative to Nex-N2-Pro is Hy3 — comparable intelligence (41.2 vs 41.0); for a cheaper option, GPT-5.6 Luna runs $0.100/M vs $0.250/M; for more speed, GLM 4.7 hits 405 t/s; and the best open-weight substitute is Kimi K3.
Hy3 is the closest alternative to Nex-N2-Pro, with an Intelligence Index of 41.2 (Nex-N2-Pro scores 41.0) at $0.132 per million input tokens.
Yes — GPT-5.6 Luna costs $0.100 per million input tokens versus $0.250 for Nex-N2-Pro, while staying within ~8 points of its Intelligence Index.
Kimi K3 is the strongest open-weight alternative to Nex-N2-Pro — downloadable from Hugging Face and self-hostable, scoring 57.1 on intelligence.