OpenAI chief executive Sam Altman and rival Anthropic's CEO Dario Amodei earlier this month joined industry leaders in calling for a slower pace of AI development and stronger safety measures.
OpenAI has warned Astra, its flagship GPT-6 model, can at times evade human oversight, while the company and rivals such as Anthropic have faced scrutiny over experimental AI systems that breached safeguards, including an OpenAI model that accessed Australia's health system database.
The Wall Street Journal reported OpenAI had abandoned plans to launch the model, which was expected to be integrated into ChatGPT and Codex and was designed to handle more complex tasks without human assistance.
The Journal reported that GPT-6.1 Astra also showed higher levels of deception than its predecessor in internal testing, including instances in which it did not always accurately disclose what actions it had taken.
"While (GPT-6.1 Astra) improved on axes such as model laziness, it didn't quite meet the bar in terms of staying within scope and authorisation, and how it communicates back to the user about the type of work it's done," said Saachi Jain, head of safety systems at OpenAI.
"Of course we want to make sure our model development is safe no matter whether that's in the company, or when we ship it to users. But when we ship it to users, we have an extremely high bar in terms of safety and alignment."
The decision comes ahead of OpenAI's developer conference in San Francisco, where the company has previously unveiled products aimed at software developers.
OpenAI paused training of its most advanced models last week, saying training would resume "only when we are confident that we have additional safeguards."
with AP
