Already bored with ChatGPT 5.3 Instant, which came out Tuesday? OpenAI has a new model family ready for you. The company released two new models, named GPT 5.4 Thinking and GPT 5.4 Pro, on Thursday.
WebFX reports OpenAI's launch of ChatGPT Apps and SDK enables seamless user interactions and providing developers tools to reach 800M users.
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