I tested GPT-5.4 Thinking, and it gave me great answers (until I dove deeper)

How do you write a resume using AI? I tested ChatGPT 5.4 and compared it to ChatGPT 5.2, to create an executive resume for a project director job. Here's what happened.

When OpenAI unveiled GPT-5 in August 2025, it promised to be faster, sharper, and more reliable than its predecessor, so naturally, GPT-5 became the new default model for ChatGPT. Those who are using the free plan felt the upgrade immediately, but it came ...

While GPT-5 does deliver some noticeable improvements in polish, detail and helpfulness, the differences feel more like a software update than an impactful revamp. OpenAI's latest GPT-5 model promises to be the most advanced AI assistant yet, but for the ...

GPT-5.3-Codex moved to No. 1 in Quality on the Microsoft Foundry AI Model Leaderboard soon after release, while a cross-metric 'podium' scoring method put GPT-5-Nano on top overall for efficiency.

Artificial intelligence is becoming a cornerstone for businesses seeking efficiency and scalability, from automating internal processes to enhancing customer-facing services. The GPT-5.2 API offers powerful capabilities for these applications,