LOS ANGELES — OpenAI on Thursday released the fifth generation of the artificial intelligence technology that powers ChatGPT , a product update that's being closely watched as a measure of whether generative AI is advancing rapidly or hitting a plateau.

GPT-5 arrives more than two years after the March 2023 release of GPT-4, bookending a period of intense commercial investment, hype and worry over AI's capabilities.

In anticipation, rival Anthropic released the latest version of its own chatbot, Claude, earlier in the week, part of a race with Google and other competitors in the U.S. and China to leapfrog each other on AI benchmarks. Meanwhile, longtime OpenAI partner Microsoft said it will incorporate GPT-5 into its own AI assistant, Copilot.

Expectations are high for the newest vers

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