The closest alternative to GPT-4.1 Nano is Nemotron 3 Nano 30B A3B (free) — comparable intelligence (13.2 vs 13.0); for a cheaper option, Nemotron 3 Ultra (free) runs Free/M vs $0.100/M; for more speed, gpt-oss-120b (free) hits 554 t/s; and the best open-weight substitute is MiniMax M3.
Nemotron 3 Nano 30B A3B (free) is the closest alternative to GPT-4.1 Nano, with an Intelligence Index of 13.2 (GPT-4.1 Nano scores 13.0) at Free per million input tokens.
Yes — Nemotron 3 Ultra (free) costs Free per million input tokens versus $0.100 for GPT-4.1 Nano, while staying within ~8 points of its Intelligence Index.
MiniMax M3 is the strongest open-weight alternative to GPT-4.1 Nano — downloadable from Hugging Face and self-hostable, scoring 54.7 on intelligence.