UpstageAI company based in South Korea · 5 registered modelsUpstage models (5)Solar Mini 4 — 9/2026 · Upstage Solar Mini 4Solar Pro 4 — 8/2026 · Upstage agent modelSolar Open 2 — 7/2026 · Upstage Solar Open 2 · Open weightsSolar Open — 12/2025 · Upstage Solar Open · Open weightssyn-pro — 10/2025 · Upstage syn-pro model← All AI companies