In response to strain from rivals together with Chinese language AI firm DeepSeek, OpenAI is altering the best way its latest AI mannequin, o3-mini, communicates its step-by-step “thought” course of.
On Thursday, OpenAI introduced that free and paid customers of ChatGPT, the corporate’s AI-powered chatbot platform, will see an up to date “chain of thought” that reveals extra of the mannequin’s “reasoning” steps and the way it arrived at solutions to questions. Subscribers to premium ChatGPT plans who use o3-mini within the “excessive reasoning” configuration will even see this up to date readout, in keeping with OpenAI.
“We’re introducing an up to date [chain of thought] for o3-mini designed to make it simpler for folks to know how the mannequin thinks,” an OpenAI spokesperson informed TechCruch by way of e mail. “With this replace, it is possible for you to to comply with the mannequin’s reasoning, providing you with extra readability and confidence in its responses.”

Reasoning fashions like o3-mini completely fact-check themselves earlier than giving out outcomes, which helps them keep away from a few of the pitfalls that usually journey up fashions. The trade-off is that reasoning fashions take a bit longer to reach at options — sometimes seconds to minutes longer.
DeepSeek’s R1 mannequin, a “reasoning” mannequin alongside the strains of o3-mini, reveals its full thought course of, which many AI researchers argue is the popular strategy. Along with making the mannequin simpler to check, the reasoning steps ship a greater consumer expertise in sure conditions, serving to point out when the mannequin could be on the proper — or incorrect — observe.
OpenAI had opted to not present the complete reasoning steps for o3-mini and its predecessors, o1 and o1-mini, partly as a result of aggressive causes. As an alternative, customers solely noticed summaries of the reasoning steps — summaries that have been at instances faulty.
After we briefed folks on 🍓 earlier than o1-preview’s launch, seeing the CoT reside was often the “aha” second for them that made it clear this was going to be an enormous deal. These aren’t the uncooked CoTs but it surely’s an enormous step nearer and I’m glad we will share that have with the world. https://t.co/72ZpPrHmfK
— Noam Brown (@polynoamial) February 6, 2025
OpenAI nonetheless isn’t exhibiting o3-mini’s full reasoning steps, however the firm mentioned it “discovered a stability”: o3-mini can “assume freely” after which arrange its “ideas” into extra detailed summaries.
“To enhance readability and security, we’ve added an extra post-processing step the place the mannequin opinions the uncooked chain of thought, eradicating any unsafe content material, after which simplifies any advanced concepts,” the OpenAI spokesperson continued. “Moreover, this post-processing step allows non-English customers to obtain the chain of thought of their native language, making a extra accessible and pleasant expertise.”
In a Reddit AMA final week, Kevin Weil, OpenAI’s chief product officer, hinted that the change was coming.
“We’re engaged on exhibiting a bunch greater than we present at this time — [showing the model thought process] will likely be very, very quickly,” he mentioned. “TBD on all — exhibiting all chain of thought results in aggressive distillation, however we additionally know folks (a minimum of energy customers) need it, so we’ll discover the proper strategy to stability it.”
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