OpenAI and Cerebras Bring GPT-5.6 Sol Ultrafast to Enterprise Inference

OpenAI is expanding its inference infrastructure through a multi-year partnership with Cerebras, aiming to support faster responses for real-time AI workloads. The centerpiece is GPT-5.6 Sol Ultrafast , a Cerebras-backed deployment that OpenAI says can reach up to 750 tokens per second during a limited preview. For enterprises, the development is less about a minor model setting and more about whether frontier-model intelligence can be used in workflows where latency materially affects the experience or business process. OpenAI's official Cerebras partnership announcement confirms plans for 750 megawatts of ultra-low-latency AI inference capacity for OpenAI customers. The capacity is scheduled to come online in multiple tranches through 2028, making the agreement a long-term infrastructure expansion rather than a one-off model launch. What the OpenAI and Cerebras partnership changes OpenAI is adding Cerebras wafer-scale compute to its inference stack. The stated objective is to provide faster responses and enable real-time AI experiences across customer workloads. Cerebras has separately identified GPT-5.6 Sol as the model used for the Ultrafast deployment, positioning the offering around high-speed access to OpenAI's flagship GPT-5.6 family model. The relevant distinction is between building a more capable model and serving an existing frontier model with a lower-latency compute path. OpenAI's announcement is focused on the latter. Cerebras hardware is being deployed to accelerate inference, the stage at which a trained model processes prompts and generates responses for users or applications. That focus matters for enterprise systems where delay can compound across a workflow. A faster model response can improve the feel of interactive tools, but it can also shorten multi-step agentic processes , reduce waiting in human review loops, and make real-time assistance more practical. The announcements do not specify which individual business applications will receive a