OpenAI has officially released GPT-5.2, and the reactions from early testers — among whom OpenAI seeded the model several days prior to public release, in some cases weeks ago — paints a two toned picture: it is a monumental leap forward for deep, autonomous reasoning and coding, yet potentially an underwhelming “incremental” update for casual conversationalists.Following early access periods and today’s broader rollout, executives, developers, and analysts have taken to X (formerly Twitter) and company blogs to share their first testing results. Here is a roundup of the first reactions to OpenAI’s latest flagship model.”AI as a serious analyst”The strongest praise for GPT-5.2 centers on its ability to handle “hard problems” that require extended thinking time.Matt Shumer, CEO of HyperWriteAI, did not mince words in his review, calling GPT-5.2 Pro “the best model in the world.” Shumer highlighted the model’s tenacity, noting that “it thinks for **over an hour** on hard problems. And it nails tasks no other model can touch.”This sentiment was echoed by Allie K. Miller, an AI entrepreneur and former AWS executive. Miller described the model as a step toward “AI as a serious analyst” rather than a “friendly companion.””The thinking and problem-solving feel noticeably stronger,” Miller wrote on X. “It gives much deeper explanations than I’m used to seeing. At one point it literally wrote code to improve its own OCR in the middle of a task.”Enterprise gains: Box reports distinct performance jumpsFor the enterprise sector, the update appears to be even more significant. Aaron Levie, CEO of Box, revealed on X that his company has been testing GPT-5.2 in early access. Levie reported that the model performs “7 points better than GPT-5.1” on their expanded reasoning tests, which approximate real-world knowledge work in financial services and life sciences.”The …
