CEO Sam Altman compared it to "having a team of PhD-level experts in your pocket," underlining the model's readiness to serve users across fields and skill levels.
The system is now available to all ChatGPT users, with paid subscribers receiving broader access. The Pro plan, priced at US$200 per month, offers unlimited use and enhanced performance for individual users.
OpenAI claims GPT-5 is faster, more accurate, and more capable than previous versions, with notable gains in reasoning, coding, and creative writing. The company also claims it has sharply reduced hallucinations and improved reliability.
Altman stressed that although the model marks a giant step toward artificial general intelligence (AGI), it still falls short of fully reaching that goal.
"This is clearly a model that is generally intelligent, although I think in the way that most of us define AGI, we are still missing something quite important," he told reporters on Wednesday ahead of the release, pointing to features like the absence of continuous learning after deployment.
GPT-5's rollout also raises fresh questions for businesses seeking to protect their content from being used or replicated by AI.
"As AI content becomes more convincing, we need to ask ourselves — are we protecting the people and creativity behind what we see every day?" Grant Farhall, chief product officer at Getty Images, told BBC. "Authenticity matters — but it doesn't come for free," he emphasized.
Farhall stressed the need to scrutinize how AI models are trained and to ensure creators are fairly compensated when their work is used.
Earlier this week, rival Anthropic introduced an updated version of its Claude chatbot, joining Google and other competitors in a race to surpass one another on AI performance benchmarks.
Reporter: Azis Kurmala
Editor: Yuni Arisandy Sinaga
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