The closest alternative to Qwen3 235B A22B Thinking 2507 is Grok 4.20 — comparable intelligence (29.7 vs 29.5); for a cheaper option, Nemotron 3 Ultra (free) runs Free/M vs $0.100/M; for more speed, gpt-oss-120b (free) hits 554 t/s; and the best open-weight substitute is MiniMax M3.
Grok 4.20 is the closest alternative to Qwen3 235B A22B Thinking 2507, with an Intelligence Index of 29.7 (Qwen3 235B A22B Thinking 2507 scores 29.5) at $1.25 per million input tokens.
Yes — Nemotron 3 Ultra (free) costs Free per million input tokens versus $0.100 for Qwen3 235B A22B Thinking 2507, while staying within ~8 points of its Intelligence Index.
MiniMax M3 is the strongest open-weight alternative to Qwen3 235B A22B Thinking 2507 — downloadable from Hugging Face and self-hostable, scoring 54.7 on intelligence.