Yes, there is no cost to set up an account with BigML. You can use BigML as much as you want. Tasks under 16 MB are FREE, which allows you to upload sources and build models at no charge. Therefore, you can sign up without sending your credit card information. Your payment credentials are only required when you want to get a subscription plan or purchase any other service offered by BigML such as personalized training, customized assistance, or BigML Certifications.