The closest alternative to Qwen3.5-Flash is Qwen3.7 Plus — comparable intelligence (53.3 vs —); for a cheaper option, Nemotron 3 Ultra (free) runs Free/M vs $0.065/M; for more speed, Morph V3 Fast hits 3.1k t/s; and the best open-weight substitute is MiniMax M3.
Qwen3.7 Plus is the closest alternative to Qwen3.5-Flash, with an Intelligence Index of 53.3 (Qwen3.5-Flash scores —) at $0.320 per million input tokens.
Yes — Nemotron 3 Ultra (free) costs Free per million input tokens versus $0.065 for Qwen3.5-Flash, while staying within ~8 points of its Intelligence Index.
MiniMax M3 is the strongest open-weight alternative to Qwen3.5-Flash — downloadable from Hugging Face and self-hostable, scoring 54.7 on intelligence.