Social Security Disability Insurance (SSDI) is different from Supplemental Security Income (SSI).
SSDI is tied to your work history. It pays benefits to you and certain members of your family if you:
Have a disability and
Worked enough years to qualify and paid Social Security taxes during the years you worked
SSI does not require you to have a work history. It provides you with money to cover basics like food, clothing, and housing if you are 65 or older or have a disability.
Social Security Disability Insurance (SSDI) is different from Supplemental Security Income (SSI).
[1] https://www.usa.gov/social-security-disability