OpenAI boss Sam Altman joins Giving Pledge

Sam Altman (Eric Risberg/AP)

The Giving Pledge has announced that OpenAI chief executive Sam Altman has joined its list of wealthy philanthropists committed to donating more than half of their fortunes.

The move comes after a tumultuous six months for Mr Altman, the co-founder of the San Francisco-based company behind ChatGPT and a venture capitalist who Forbes says amassed much of his one billion dollars (£782 million) through investments.