Open-Weight LineageUpstage
Upstage releases Solar Open 2
Solar Open 2 released — an MoE with 250B total / 15B active parameters per token, commercially usable under the Upstage Solar License
Why it matters
A phase-2 result of the independent foundation model program
Source — Primary sources first; secondary reports are labelled “Press”
Officialupstage.aihttps://www.upstage.ai/blog/ko/solar-open-2Added in Week 35, 2026 · See that week