In an Email received a few minutes ago from Citi Cards CEO Jud Linville:
Select cardmembers can now view their FICO® Credit Scores – free – anytime at citi.com/creditscore, or on the Card Benefits page when logged into Account Online.After logging in, at the Summary screen, I clicked on "Card Benefits" and then on "FICO credit score" half way down the page on the right.
In a footnote to the Email:
Your FICO® Score is calculated based on data from Equifax using the FICO® Bankcard Score 8 model and may be different from other credit scores. FICO® Scores are intended for and delivered only to the Primary cardmember and only if a FICO® Score is available. Disclosure of this score is not available for all Citi products and Citi may discontinue displaying the score at our discretion.