The closest alternative to Nemotron 3 Nano 30B A3B is Mistral Large 2407 — comparable intelligence (7.3 vs 7.4); for a cheaper option, gpt-oss-120b runs $0.037/M vs $0.050/M; and the best open-weight substitute is Kimi K3.
Mistral Large 2407 is the closest alternative to Nemotron 3 Nano 30B A3B, with an Intelligence Index of 7.3 (Nemotron 3 Nano 30B A3B scores 7.4) at $2.00 per million input tokens.
Yes — gpt-oss-120b costs $0.037 per million input tokens versus $0.050 for Nemotron 3 Nano 30B A3B, while staying within ~8 points of its Intelligence Index.
Kimi K3 is the strongest open-weight alternative to Nemotron 3 Nano 30B A3B — downloadable from Hugging Face and self-hostable, scoring 57.1 on intelligence.