OpenAI Debuts GPT-5, Its ‘Most Useful Model Yet’

OpenAI has unveiled GPT-5, introducing sweeping improvements across ChatGPT, the API, and developer tools—all designed to make the experience smarter, safer, and more personal.

OpenAI CEO Sam Altman described the new model as a “significant step along our path to AGI” but mostly focused on its usability for the 700 million people he says use ChatGPT each week.

“It’s like talking to an expert—a legitimate PhD-level expert in anything, any area you need, on demand,” Altman said at the GPT-5 launch event.

The update boasts a “unified system that automatically gives you the best version of ChatGPT, no matter your prompt.” It’s faster, more accurate, and significantly better at real-world tasks like writing, coding, and even health-related queries.

GPT-5 introduces safe completions, a new behavior where ChatGPT aims to give the most helpful response possible within clear safety boundaries. It can also explain why it can’t help. It’s a big step toward more transparent and trustworthy AI, according to OpenAI.

Additional personalization upgrades and account integrations make ChatGPT feel like an assistant as well.

New features now available in ChatGPT with GPT-5 include:

• Smarter reasoning with fewer hallucinations.
• Safe completions for clearer, more helpful replies.
• Stronger coding and frontend design skills.
• Improved writing tools for real workflows.
• Best-ever model for health-related guidance.
• Chat color customization (exclusive options for paid users).
• Pre-set personalities such as “Cynic,” “Robot,” “Listener,” and “Nerd.”
• Gmail, Google Calendar, and Contacts integration (Pro first).
• Voice improvements with adaptive tone and expanded access.
• Unified Voice Mode coming to all users soon.

Developers also get major upgrades, including free-form function calling, verbosity control, and a 256K token context window.

Though Altman has said this is “the smartest” ChatGPT yet, users are saying it’s a downgrade. Some users have taken to social platforms such as Reddit to complain that the new model isn't any better than any of the older versions—and you can't even revert to the old ones if you don't like the latest release.

One user wrote, “Yup it sucks. Can’t believe we waited 2 years and took a step backwards. The creative writing is worse, it’s adopted a corporate personality, and it rarely bothers to follow instructions or incorporate your preferences without you having to ask. I hope the coders are happy at least.” And another said, “It's like my ChatGPT suffered a severe brain injury and forgot how to read. It is atrocious now.”

However, others are finding success with the new model. AI developer tool startup Cursor, co-founder and CEO Michael Truell said in a quote, “Our team has found GPT-5 to be remarkably intelligent, easy to steer, and even to have a personality we haven’t seen in any other model. It not only catches tricky, deeply-hidden bugs but can also run long, multi-turn background agents to see complex tasks through to the finish—the kinds of problems that used to leave other models stuck. It’s become our daily driver for everything from scoping and planning PRs to completing end-to-end builds.”

OpenAI is the world’s third most valuable private company and a “bellwether” for the AI industry, with an “increasingly fragile moat” at the frontier of AI, according to JPMorgan Chase, which recently made the decision to cover the company despite it not being publicly traded.

GPT-5 is rolling out now to all tiers, including Free, Plus, Pro, and Team users.

For more information about this news, visit www.openai.com.