Quit with Bella is an AI-powered stop-smoking service created by Solutions 4 Health, a UK provider of stop-smoking services. It offers smokers a personalised, conversational robo-coach designed to provide practical, encouraging support whenever it is needed. Bella can communicate in multiple languages and guides users through what to expect when becoming smoke-free, including information on using stop-smoking medication. The service is built around National Institute for Health and Care Excellence (NICE) evidence guidelines and knowledge from stop-smoking experts.

Quit with Bella supports individuals who may not access traditional services, while also helping councils and stop-smoking advisers reach more people. It provides NHS-aligned standard data reports for quarterly returns and can be offered at scale. A real-world evaluation in Dudley reported four-week quit rates comparable to face-to-face services with free nicotine replacement therapy, alongside lower cost per quitter than usual traditional services. The service has been recognised for its use of artificial intelligence, winning the HTN Awards 2020 Best Use of AI award, and has featured at an ITU/WHO workshop on artificial intelligence for health.