* OpenAI releases GPT-4o, a faster model that's free for all ChatGPT users The Verge
* OpenAI plans to announce Google search competitor on Monday, sources say Reuters
* OpenAI Spring Update announcements — GPT-4o, breakthrough voice assistant and more Tom's Guide
* OpenAI unveils ChatGPT-4o — cheaper and twice as fast as GPT-4 Quartz
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