OpenAI launches o3-pro model for high-stakes tasks

Published 10/06/2025, 21:38
© Reuters

Investing.com -- OpenAI released its new o3-pro AI model on Tuesday, designed specifically for users who need reliable performance in complex domains like mathematics, science, and programming. o3-pro is now available to Pro users through ChatGPT and API integration, with Enterprise and Education users gaining access next week.

Built on the o3 base model architecture, the new version outperforms both o3 and the earlier o1-pro in capability, according to OpenAI’s academic and expert benchmarks. Internal evaluations demonstrate improvements in clarity, instruction-following, and comprehensiveness.

OpenAI CEO Sam Altman expressed surprise at the model’s performance, posting on X, "it is really smart! i didnt believe the win rates relative to o3 the first time i saw them."

According to the company, reviewers preferred o3-pro across all tested categories including science, programming, education, business, and writing.

The model’s primary advantage is its enhanced reliability, particularly in OpenAI’s "4/4 reliability" test, which requires correct answers to the same question across four separate trials. This consistency comes with longer response times, as o3-pro accesses more tools including web search, Python, file analysis, and memory personalization.

Some features remain unavailable at launch. Temporary chats have been disabled due to unresolved issues, and unlike GPT-4o and o4-mini, o3-pro does not support image generation or the Canvas platform.

The company has positioned o3-pro for users who value accuracy over speed, highlighting its suitability for fields requiring detailed, high-stakes responses. It is already replacing o1-pro in the model picker for Pro and Team account tiers.

Safety specifications for o3-pro are included in the shared system card for the o3 family of models. The company has not announced when additional creative tools like image generation might be added to o3-pro.

The launch strengthens OpenAI’s product differentiation strategy, targeting a user base that demands not just generalized intelligence, but sustained and verifiable correctness in AI outputs. For developers and professionals, the tradeoff between speed and certainty may validate o3-pro as the platform’s new default for critical tasks.

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