OpenAI Launches Ultrafast Mode for GPT-5.6 Sol
OpenAI announced Ultrafast, a service that runs GPT-5.6 Sol up to 14 times faster, using Cerebras inference technology. The preview is open to some users, with a waitlist for broader access. OpenAI says Ultrafast reaches 750 tokens per second and completes Humanity's Last Exam in 11 hours 11 minutes.