OpenAI has formally launched GPT-5.2, and the reactions from early testers — amongst whom OpenAI seeded the mannequin a number of days previous to public launch, in some circumstances weeks in the past — paints a two toned image: it’s a monumental leap ahead for deep, autonomous reasoning and coding, but probably an underwhelming "incremental" replace for informal conversationalists.
Following early entry durations and as we speak's broader rollout, executives, builders, and analysts have taken to X (previously Twitter) and firm blogs to share their first testing outcomes.
Here’s a roundup of the primary reactions to OpenAI’s newest flagship mannequin.
"AI as a severe analyst"
The strongest reward for GPT-5.2 facilities on its means to deal with "exhausting issues" that require prolonged pondering time.
Matt Shumer, CEO of HyperWriteAI, didn’t mince phrases in his evaluate, calling GPT-5.2 Professional "the very best mannequin on the earth."
Shumer highlighted the mannequin's tenacity, noting that "it thinks for **over an hour** on exhausting issues. And it nails duties no different mannequin can contact."
This sentiment was echoed by Allie Ok. Miller, an AI entrepreneur and former AWS government. Miller described the mannequin as a step towards "AI as a severe analyst" quite than a "pleasant companion."
"The pondering and problem-solving really feel noticeably stronger," Miller wrote on X. "It provides a lot deeper explanations than I’m used to seeing. At one level it actually wrote code to enhance its personal OCR in the midst of a activity."
Enterprise beneficial properties: Field reviews distinct efficiency jumps
For the enterprise sector, the replace seems to be much more important.
Aaron Levie, CEO of Field, revealed on X that his firm has been testing GPT-5.2 in early entry. Levie reported that the mannequin performs "7 factors higher than GPT-5.1" on their expanded reasoning assessments, which approximate real-world information work in monetary companies and life sciences.
"The mannequin carried out nearly all of the duties far sooner than GPT-5.1 and GPT-5 as properly," Levie famous, confirming that Field AI shall be rolling out GPT-5.2 integration shortly.
Rutuja Rajwade, a Senior Product Advertising and marketing Supervisor at Field, expanded on this in an organization weblog put up, citing particular latency enhancements.
"Advanced extraction" duties dropped from 46 seconds on GPT-5 to simply 12 seconds with GPT-5.2.
Rajwade additionally famous a soar in reasoning capabilities for the Media and Leisure vertical, rising from 76% accuracy in GPT-5.1 to 81% within the new mannequin.
A "severe leap" for coding and simulation
Builders are discovering GPT-5.2 notably potent for "one-shot" era of advanced code constructions.
Pietro Schirano, CEO of magicpathai, shared a video of the mannequin constructing a full 3D graphics engine in a single file with interactive controls. "It’s a severe leap ahead in advanced reasoning, math, coding, and simulations," Schirano posted. "The tempo of progress is unreal."
Similarly, Ethan Mollick, a professor on the Wharton College of Enterprise on the College of Pennsylvania and longtime LLM and AI energy person and author, demonstrated the mannequin's means to create a visually advanced shader—an infinite neo-gothic metropolis in a stormy ocean—by way of a single immediate.
The Agentic Period: Lengthy-running autonomy
Maybe essentially the most useful shift is the mannequin's means to remain on activity for hours with out dropping the thread.
Dan Shipper, CEO of considerate AI testing e-newsletter Each, reported that the mannequin efficiently carried out a revenue and loss (P&L) evaluation that required it to work autonomously for 2 hours. "It did a P&L evaluation the place it labored for two hours and gave me nice outcomes," Shipper wrote.
Nonetheless, Shipper additionally famous that for day-to-day duties, the replace feels "largely incremental."
In an article for Each, Katie Parrott wrote that whereas GPT-5.2 excels at instruction following, it’s "much less resourceful" than opponents like Claude Opus 4.5 in sure contexts, comparable to deducing a person's location from electronic mail information.
The downsides: Pace and Rigidity
Regardless of the reasoning capabilities, the "really feel" of the mannequin has drawn critique.
Shumer highlighted a big "velocity penalty" when utilizing the mannequin's Pondering mode. "In my expertise the Pondering mode may be very gradual for many questions," Shumer wrote in his deep-dive evaluate. "I virtually by no means use Prompt."
Allie Miller additionally identified points with the mannequin's default habits. "The draw back is tone and format," she famous. "The default voice felt a bit extra inflexible, and the size/markdown habits is excessive: a easy query became 58 bullets and numbered factors."
The Verdict
The early response means that GPT-5.2 is a software optimized for energy customers, builders, and enterprise brokers quite than informal chat. As Shumer summarized in his evaluate: "For deep analysis, advanced reasoning, and duties that profit from cautious thought, GPT-5.2 Professional is the best choice obtainable proper now."
Nonetheless, for customers searching for inventive writing or fast, fluid solutions, fashions like Claude Opus 4.5 stay sturdy opponents. "My favourite mannequin stays Claude Opus 4.5," Miller admitted, "however my advanced ChatGPT work will get a pleasant incremental increase."
