The closest alternative to Inflection 3 Pi is Inflection 3 Productivity — comparable intelligence (— vs —); for a cheaper option, Qwen3.7 Max runs $1.25/M vs $2.50/M; for more speed, Morph V3 Large hits 3.1k t/s; and the best open-weight substitute is MiniMax M3.
Inflection 3 Productivity is the closest alternative to Inflection 3 Pi, with an Intelligence Index of — (Inflection 3 Pi scores —) at $2.50 per million input tokens.
Yes — Qwen3.7 Max costs $1.25 per million input tokens versus $2.50 for Inflection 3 Pi, while staying within ~8 points of its Intelligence Index.
MiniMax M3 is the strongest open-weight alternative to Inflection 3 Pi — downloadable from Hugging Face and self-hostable, scoring 54.7 on intelligence.