The closest alternative to Mistral Medium 3 is Qwen3 Coder 30B A3B Instruct — comparable intelligence (13.6 vs 12.5); for a cheaper option, MiniMax M3 runs $0.300/M vs $0.400/M; and the best open-weight substitute is Kimi K3.
Qwen3 Coder 30B A3B Instruct is the closest alternative to Mistral Medium 3, with an Intelligence Index of 13.6 (Mistral Medium 3 scores 12.5) at $0.070 per million input tokens.
Yes — MiniMax M3 costs $0.300 per million input tokens versus $0.400 for Mistral Medium 3, while staying within ~8 points of its Intelligence Index.
Kimi K3 is the strongest open-weight alternative to Mistral Medium 3 — downloadable from Hugging Face and self-hostable, scoring 57.1 on intelligence.