Upstage

Upstage has released Solar Mini 4, a compact mixture-of-experts model with 35B total parameters, 3B active parameters, and a 524K token context window. The model targets agentic workloads and is priced at $0.05 per 1M input tokens and $0.20 per 1M output tokens, a promotional 50% discount off standard rates.

Upstage has released Solar Pro 4, a large language model with a 524K token context window aimed at agentic workflows, document processing, and coding. The model is priced at $0.03 per million input tokens and $0.12 per million output tokens, and is available now via OpenRouter.