The closest alternative to GPT-5.4 is Qwen3.7 Max — comparable intelligence (56.6 vs 56.8); for a cheaper option, Qwen3.7 Max runs $1.25/M vs $2.50/M; for more speed, MiniMax M2.7 hits 211 t/s; and the best open-weight substitute is MiniMax M3.
Qwen3.7 Max is the closest alternative to GPT-5.4, with an Intelligence Index of 56.6 (GPT-5.4 scores 56.8) at $1.25 per million input tokens.
Yes — Qwen3.7 Max costs $1.25 per million input tokens versus $2.50 for GPT-5.4, while staying within ~8 points of its Intelligence Index.
MiniMax M3 is the strongest open-weight alternative to GPT-5.4 — downloadable from Hugging Face and self-hostable, scoring 54.7 on intelligence.