OpenAI says it used its latest AI model, GPT-5.6, to optimise its own AI infrastructure, lowering inference costs and improving throughput. It said improvements to the inference engine and GPU use cut end-to-end service costs by 20 percent for the GPT-5.6 Sol model and raised token generation efficiency by 15 percent. OpenAI also optimised KV cache handling, GPU workload distribution and agent operations, limiting tool output and improving caching.

SK Hynix has completed negotiations on long-term supply agreements with about 10 customers, including core clients, it said. The contracts typically run five years and include financial arrangements such as deposits alongside purchase commitments. The company said tight memory supply-demand conditions are likely to persist, supporting customers’ push for mid- to long-term supply stability. It is also negotiating 2027 HBM supply volumes and prices with key customers.