SK Telecom opens a 688B-parameter Korean model

SK Telecom released its 688-billion-parameter A.X K2 on Hugging Face, reporting an average 32.2-percentage-point gain across 14 benchmarks over its 519B predecessor in the company’s launch announcement. The Korean-language model activates 33B parameters per token and arrives with downloadable weights and implementation files, though the published results still need independent testing. For operators, A.X K2 is another reason to treat sovereign models as workload-specific routing options—not universal replacements—alongside the deployment discipline in Solar Open 2’s two-H200 proposition.