Upstage develops the Solar series of LLMs — top-ranked open-weight models on the OpenLLM leaderboard. Operates Solar Pro for enterprise and document AI. Backed by Korea Development Bank, SK Hynix. Founded by Sung Kim. Seoul-based.
How Upstage compares with its closest alternatives
1 of the 5 closest alternatives has a free plan, as Upstage does. All 5 offer an API, as Upstage does. Upstage was founded in 2020; the alternatives were founded between 2019 and 2023, 1 of them earlier. Upstage is based in Seoul, South Korea; 2 of its 5 alternatives are in South Korea too, and the others in Germany, China and France.
Market position · AI Models
How Upstage compares in AI Models
Upstage has high opportunity and sits in the top third of 455 live AI Models tools on FalcoScan. Across AI Models, the average opportunity score is 74.6 and the average saturation score 30.5. FalcoScan rates Upstage's own market position as open. 200 of the 455 operating AI Models tools have hot momentum, and FalcoScan has recorded 13 shutdowns in the category.
The closest alternatives to Upstage that are still running, matched on the AI capabilities, uses and audience they share, are LG AI Research, Aleph Alpha, Naver HyperCLOVA, Alibaba Cloud Bailian, and Mistral AI.
Is Upstage still running?
Yes. As of 2 November 2026, FalcoScan lists Upstage as operating at upstage.ai.
Where is Upstage based?
Upstage is headquartered in Seoul, South Korea.
Does Upstage have an API?
Yes. Upstage offers an API.
Who is Upstage for?
Upstage is built for enterprises and developers.
How do I sign in to Upstage?
Sign in on Upstage's own website, upstage.ai. FalcoScan reviews Upstage but does not run its accounts, so logins, passwords and billing are handled by Upstage directly.