The closest alternative to Qwen3.5-122B-A10B is o3 Pro — comparable intelligence (32.5 vs 32.3); for a cheaper option, GPT-5.6 Luna runs $0.100/M vs $0.260/M; and the best open-weight substitute is Kimi K3.
o3 Pro is the closest alternative to Qwen3.5-122B-A10B, with an Intelligence Index of 32.5 (Qwen3.5-122B-A10B scores 32.3) at $20.00 per million input tokens.
Yes — GPT-5.6 Luna costs $0.100 per million input tokens versus $0.260 for Qwen3.5-122B-A10B, while staying within ~8 points of its Intelligence Index.
Kimi K3 is the strongest open-weight alternative to Qwen3.5-122B-A10B — downloadable from Hugging Face and self-hostable, scoring 57.1 on intelligence.