OpenAI has officially released GPT-5.2, and the reactions from early testers—including Openai seeding the model days before the public release, in some cases weeks—paint a two-tone picture: It’s a monumental leap forward for deep, autonomous reasoning and coding, yet a potentially flawed scratch. "Additional" Update for casual conversationalists.
After early access periods and today’s broader rollout, executives, developers, and analysts have taken to X (formerly Twitter) and company blogs to share the first results of their testing.
Here’s a roundup of first reactions to Openei’s latest flagship model.
"AI as a serious analyst"
The strongest definition for GPT-5.2 centers on its handling capacity "Difficult problems" This requires an extended period of thinking.
HyperRight CEO Matt Schumer didn’t mince words Review itcalling GPT-5.2 Pro "The best model in the world."
Schumer notes this and highlights the model’s rigor "It thinks for over an hour ** on difficult problems **. And it works, works no other model can touch."
It was emotion Echoed by Eli K. Milleran AI entrepreneur and former AWS executive. Miller describes the model as a step toward "AI as a serious analyst" Instead of one "Friendly fellow"
"Feels particularly strong in thinking and problem solving," Miller wrote on X. "It gives much deeper details than we are used to seeing. At one point he literally wrote the code to improve his OCR in the middle of a job."
Enterprise Gains: The Box report takes a different leap in performance
For the enterprise sector, the update seems even more important.
Box CEO Aaron Levy revealed to X That his company is testing GPT-5.2 in Early Access. Levy reported that the model performs "7 points better than GPT-5.1" On their extended reasoning tests, which approximate real-world knowledge tasks in financial services and life sciences.
"The model performed the majority of tasks faster than GPT-5.1 and GPT-5, as well as" Levy noted, confirming that Box AI will soon end the GPT-5.2 integration.
Rutoja Rajwade, a senior product marketing manager at Box, Expanded on this in a company blog postreferring to specific latency improvements.
"Complex extraction" Tasks dropped from 46 seconds on GPT 5 to just 12 seconds with GPT 5.2.
Rajwade also made a leap in reasoning capabilities for the media and entertainment vertical, increasing from 76 percent accuracy in GPT 5.1 to 81 percent in the new model.
a "Serious jump" For coding and simulation
Developers are finding GPT-5.2 particularly powerful "One shot" Creating complex code structures.
Pietro Schirano, CEO of Magiccaptai, Shared a video A complete 3D graphics engine rendering model in one file with interactive controls. "This is a serious leap forward in complex reasoning, mathematics, coding and simulation." Posted by Shirano. "The pace of progress is unreal."
sMore generally, Ethan Mulk, a professor at the Wharton School of Business at the University of Pennsylvania and a longtime LL.M. and AI power user and author, Demonstrated the model’s ability to create visually complex shaderssti is an infinite neo-gothic city in a stormy sea—a single gesture.
Agent Era: Long Lasting Autonomy
Perhaps the most functional shift model has the ability to stay on the job for hours without losing a thread.
Dan Schipper, CEO of the AI Testing Newsletter Everyone Thinks Aboutreported that the model successfully performed a profit and loss (P&L) analysis requiring it to operate autonomously for two hours. "He did a P&L analysis where he worked for 2 hours and gave me great results," Shipper wrote.
However, Shipper also notes that for day-to-day tasks, the refresh feels good "Mostly extra."
i An article for everyoneKatie Parrott wrote that while GPT-5.2 is the leading edge on directives, it is "Less resources" Compared to competitors like Cloud Ops 4.5 in some contexts, such as deducing a user’s location from email data.
Downside: speed and toughness
Despite the reasoning abilities, "feel" Criticism of the model has been drawn.
Schumer sheds an important light "Speed penalty" When using the model’s way of thinking. "In my experience the thinking mode is very slow for most questions," Schumer wrote in his deep dive review. "I never use instant."
Eli Miller also pointed out issues with the model’s default behavior. "The downside is the tone and shape," He noted. "The default voice felt a bit too stiff, and the length/markdown behavior is extreme: a simple question turned into 58 bulleted and numbered points."
The decision
Preliminary reactions show that GPT. As Schumer summarized in his review: "For intensive research, complex reasoning and tasks that benefit from careful thought, the GPT-5.2 Pro is the best option available right now."
However, for users looking for creative writing or fast, fluid responses, models like Cloud Ops 4.5 are strong contenders. "My favorite model is Cloud Ops 4.5," Miller admitted, "But it would be a nice addition to my complex chat GPT work."