ChatGPT’s new ‘Thinking’ mode just hit a 94% reasoning score - 7 prompts it can solve that standard AI can’t

Key Points:

• OpenAI's GPT-5.4 introduces an Extended Thinking mode that enables the AI to internally simulate and self-correct before generating responses, achieving a 94% success rate on the ARC-AGI-1 reasoning benchmark, surpassing human experts.
• The new mode excels in complex tasks such as real-time code auditing, legal tax deduction analysis, solving difficult logic puzzles, patent prior art investigation, financial anomaly detection, long-form story consistency checks, and network security audits.
• Despite its advanced reasoning capabilities, GPT-5.4 Thinking mode is slower and more costly than standard models, with usage limits affected by prompt complexity and some security features gated behind specialized programs like Trusted Access for Cyber (TAC).
• The update marks a shift from traditional chatbot functions to a "reasoning engine" that offers deep contextual understanding and metacognitive abilities, making it highly valuable for professional and high-stakes applications.
• Users are advised to take privacy precautions when uploading sensitive data, such as masking IP addresses in network logs, and to expect that GPT-5.4 Thinking mode is best suited for tasks requiring advanced reasoning rather than casual summarization or simple queries.