GPT-5 is OpenAI’s most advanced AI model to date, and it’s now officially launched to all users. It comes in four variants: nano, mini, standard, and chat. OpenAI says you can expect expert-level intelligence from GPT-5 across numerous fields like coding, math, writing, health, and visual perception.
The new model comes with enhanced reasoning capabilities, a real-time router that selects the best model based on conversation type and a deeper reasoning (GPT-5 thinking) model for more challenging problems. OpenAI proudly claims that GPT-5 is its best-performing model in terms of knowledge work, with comparable to, or better than expert-level knowledge across 40 occupations, including law, logistics, sales, and engineering.
GPT-5 benchmark performance
GPT-5 also brings enhanced agentic capabilities, with the ability to chain together numerous tool calls and follow longer multi-step instructions. In benchmarks like SWE-Bench and Aider Polyglot, GPT-5 achieved top performance, delivering cleaner code and better debugging in real-world use cases. OpenAI says hallucinations have been significantly reduced.
GPT-5 benchmark performance
OpenAI is also bringing new personalization to GPT-5 with the ability to select chat personalities (Cynic, Robot, Listener, and Nerd), color themes and integration with Gmail and Google Calendar.
At launch, GPT-5 rolls out to all ChatGPT users—free tiers get access with usage limits, while Plus and Pro subscribers benefit from higher limits and upgraded model versions.
