This study aims to test a special system called FUSION that uses artificial intelligence (AI) to control blood sugar in people with type 1 and type 2 diabetes. Blood sugar, or glucose, is a type of sugar that gives energy to the body. The study will take place in a clinical research center for 24 hours. During this time, the system will help keep glucose levels between 100-140 mg/dL by using two glucose monitors and a computer to adjust the amount of insulin (a hormone that helps control sugar levels) and dextrose (a type of sugar) given through a drip in the arm. Participants will eat three meals during the study. For safety, their glucose will be checked often. The study is for people aged 18-70 who have been diagnosed with diabetes for at least a year.

• The study lasts for 24 hours and includes three meals.
• Participants will have their glucose levels checked frequently for safety.
• Only adults (18-70 years) with diabetes who use insulin can participate.