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OpenAI upgrades ChatGPT with GPT-5.4 Thinking, offering six key improvements

Keyword: Multi-agent
Publisher: 9to5Mac
Published: Mar 5, 2026
Earlier this week, OpenAI released GPT-5.3 Instant, promising to make ChatGPT less cringe and more natural when using its most popular model. Now OpenAI is back with GPT-5.4 Thinking and Pro, which i… [+1717 chars]
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