A US start-up that had promised to "turbocharge" healthcare AI was accused of  misleading marketing and poor ethics. 

Olive AI laid off 450 employees in a move said by CEO Sean Lane to have been caused by the company's 'fast-paced growth and lack of focus'. 

But the claim was seen as contradicting Axios interviews with former and current employees and health tech executives suggesting the company regularly over-hyped its capabilities and under-delivered, generating 'only a fraction of the savings it promises.'

Olive had been through various incarnations since it was founded in 2012, and was at one time valued at USD 4 billion. 

But it was regularly dogged by questions about the efficacy of its software and the integrity of its marketing and leadership.