OpenAI

Introducing GPT-4, OpenAI’s most advanced system

What can I help with? Message ChatGPT Talk with ChatGPT Research API Platform Stories More Codex for every role, tool, and workflow Product 7 min read Codex for every role, tool, and workflow Product 7 min read Improving health intelligence in ChatGPT Product Better memory for a more helpful ChatGPT Dreaming: Better memory for a more helpful ChatGPT Research 5 min read Introducing GPT-5.5 Product 18 min read Recent news View more Confidential submission of draft S-1 to the SEC Company Jun 8, 2026 Built to benefit everyone: our plan Company Jun 8, 2026 Advancing content provenance for a safer,

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• Eric Chang
• Yueh Han Huang
• 雅瑄 何

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