Solar Mini 4 is a 35B MoE model priced at $0.05 per million input tokens on OpenRouter
Upstage’s Solar Mini 4 on OpenRouter is a 35B mixture-of-experts model with 3B active parameters, a 524K context window, tool calling, structured outputs, and optional reasoning. OpenRouter prices it at $0.05 per million input tokens and $0.20 per million output tokens.