The closest alternative to Gemini 3.1 Pro Preview is DeepSeek V3.2 — comparable intelligence (41.7 vs 41.3); for a cheaper option, Qwen3.7 Max runs $1.25/M vs $2.00/M; for more speed, GLM 4.7 hits 427 t/s; and the best open-weight substitute is MiniMax M3.
DeepSeek V3.2 is the closest alternative to Gemini 3.1 Pro Preview, with an Intelligence Index of 41.7 (Gemini 3.1 Pro Preview scores 41.3) at $0.229 per million input tokens.
Yes — Qwen3.7 Max costs $1.25 per million input tokens versus $2.00 for Gemini 3.1 Pro Preview, while staying within ~8 points of its Intelligence Index.
MiniMax M3 is the strongest open-weight alternative to Gemini 3.1 Pro Preview — downloadable from Hugging Face and self-hostable, scoring 54.7 on intelligence.