TOKYO—SoftBank Group Chief Executive Masayoshi Son reiterated his bullish forecasts for artificial intelligence in a speech Thursday that stressed advances made by OpenAI.

OpenAI raised $6.6 billion in a recent round of new funding that included a $500 million investment by SoftBank, according to a person familiar with the matter.

Son said he believed artificial general intelligence, in which computers have human-level cognitive abilities, would be achieved in two to three years. He reiterated that he believes “artificial super intelligence,” in which computers have 10,000 times the intelligence of humans, will be achieved within a decade.

“A gold rush of intelligence has arrived. The one who goes fastest will win,” Son said at SoftBank World 2024, a conference organized by his company.