The closest alternative to GPT-3.5 Turbo (older v0613) is GPT Chat Latest — comparable intelligence (— vs —); for a cheaper option, MiniMax M3 runs $0.300/M vs $1.00/M; for more speed, Morph V3 Large hits 2.6k t/s; and the best open-weight substitute is MiniMax M3.
GPT Chat Latest is the closest alternative to GPT-3.5 Turbo (older v0613), with an Intelligence Index of — (GPT-3.5 Turbo (older v0613) scores —) at $5.00 per million input tokens.
Yes — MiniMax M3 costs $0.300 per million input tokens versus $1.00 for GPT-3.5 Turbo (older v0613), while staying within ~8 points of its Intelligence Index.
MiniMax M3 is the strongest open-weight alternative to GPT-3.5 Turbo (older v0613) — downloadable from Hugging Face and self-hostable, scoring 54.7 on intelligence.