The closest alternative to WizardLM-2 8x22B is Phi 4 — comparable intelligence (4.9 vs —); for a cheaper option, GPT-5.6 Luna runs $0.100/M vs $0.620/M; and the best open-weight substitute is Kimi K3.
Phi 4 is the closest alternative to WizardLM-2 8x22B, with an Intelligence Index of 4.9 (WizardLM-2 8x22B scores —) at $0.070 per million input tokens.
Yes — GPT-5.6 Luna costs $0.100 per million input tokens versus $0.620 for WizardLM-2 8x22B, while staying within ~8 points of its Intelligence Index.
Kimi K3 is the strongest open-weight alternative to WizardLM-2 8x22B — downloadable from Hugging Face and self-hostable, scoring 57.1 on intelligence.