OpenAI announced it will officially launch its latest flagship model, GPT-5.6 Sol, this Thursday, with inference speeds reaching up to 750 tokens per second on Cerebras Systems wafer-scale hardware. Cerebras also announced it will invest billions of dollars in a major European expansion to build regional AI computing centers, directly challenging Nvidia's dominance. OpenAI CEO Sam Altman confirmed the launch plan on social media. GPT-5.6 Sol will feature an all-new Ultra multi-agent mode and Max inference intensity, setting new records across core benchmarks in coding, biology, and cybersecurity. According to OpenAI's published pricing strategy, Sol's input cost is $5 per million tokens and output cost is $30 per million tokens, positioning it as the highest-end product in the GPT-5.6 series.