Upstage unveiled its open-weight large language model \'Solar Open 2\' optimised for agent task execution and released the model weights on Hugging Face. Developed through a government sovereign AI foundation model project, it uses a mixture-of-experts design with 250 billion parameters and activates 15 billion in use. Upstage said it outperformed rival models on multiple benchmarks and plans broader deployments and AX services across industries.

GitHub Copilot users are voicing growing complaints about a new pay-as-you-go billing system based on AI credits. Reports say monthly limits can be depleted quickly even with typical use. Plans now include fixed monthly credit allocations, with credits deducted by actual usage and model pricing. Some users say converted costs would rise to thousands of dollars. Others say changing usage habits can reduce spending, while model-to-model cost gaps add to uncertainty.