Scite analyses how papers cite each other: every Smart Citation is classified as supporting, contrasting or merely mentioning the cited work, so you can see at a glance whether a claim is contested. Its index spans 1.2 billion citations across roughly 187 million articles.
Beyond search, Scite includes a Reference Check for your manuscripts, citation statements dashboards for authors and institutions, a browser extension and API access. Access is subscription-based with a 7-day trial of premium features.