OpenAI to Launch 'o' AI Assistant and ChatGPT Pro Max at Dev Day

OpenAI is preparing to launch a persistent AI assistant named 'o' to compete with Meta's Muse, with an official debut expected at the Dev Day event on Tuesday, September 29. The 'o' assistant is reportedly powered by a variant of the GPT-6 Astra model called 'Aeon,' designed for long-running tasks. Additionally, OpenAI plans to introduce a premium subscription tier, ChatGPT Pro Max, priced at $500 per month, which will leverage Cerebras' Wafer-Scale Engine for high-speed performance. The company is also rumored to be integrating 'o' with a new donut-shaped consumer AI hardware device. This move follows Meta Muse's recent top ranking in J.P. Morgan's Assistant Benchmark, which has intensified competition in the AI agent sector.