A Study of LY900014 Versus Insulin Lispro (Humalog) on High Blood Sugar in Participants With Type 1 Diabetes Who Use Insulin Pumps

Inclusion Criteria: * Male or female participants with type 1 diabetes * Body mass index (BMI) between 18.5 and 30.0 kilograms per square meter, inclusive * Hemoglobin A1c (HbA1c) less than or equal to 8.5 percent (%) * Using CSII and stable insulin regimen for at least 3 months prior to inclusion into the trial Exclusion Criteria: * Known or suspected hypersensitivity to investigational medical product(s) or related products * Receipt of any medicinal product in clinical development within 30 days or at least 5 half-lives of the related substances and their metabolites (whichever is longer) before randomization in this trial * Known slowing of gastric emptying and or gastrointestinal surgery that, in the opinion of the investigator, might change gastrointestinal motility and food absorption * Proliferative retinopathy or maculopathy as judged by the Investigator based on a recent (less than 1.5 years) ophthalmologic examination * Widespread subcutaneous lipodystrophy in the abdomen * Current use of any glucose-lowering agents other than insulin within 3 months prior to screening * Chronic or recent use of corticosteroids