GPT-5.4 is billed as "our most capable and efficient frontier model for professional work." ...
WebFX reports OpenAI's launch of ChatGPT Apps and SDK enables seamless user interactions and providing developers tools to reach 800M users.
GPT-5.4 is also more reliable, producing 18% fewer errors and 33% fewer false claims than GPT-5.2, according to OpenAI.
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