OpenAI is hosting a live stream at 10AM PT to announce GPT-5, but Microsoft has already confirmed the details.
In a GitHub document, which has now been taken offline, Microsoft confirmed GPT-5 is launching later today. While it was obvious, this is the first official confirmation.
Microsoft also offered more details on GPT-5 models, including the base model, which is called just GPT-5. It is designed for logic and multi-step tasks.
We also have GPT-5-mini, which is a lightweight version for cost-sensitive applications. Then, we have GPT-5-nano, which is optimised for speed and ideal for applications requiring low latency.
Finally, there's a new GPT-5 chat, which is designed for advanced, natural, multimodal, and context-aware conversations for enterprise applications.
As spotted on Internet Archive, GitHub blog says GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience.
Microsoft added that GPT-5 handles complex coding tasks with minimal prompting, provides clear explanations.
"GPT-5 introduces enhanced agentic capabilities, making it a powerful coding collaborator and intelligent assistant for all users," Microsoft noted.
OpenAI may limit GPT-5 advanced features to pricey plans
OpenAI plans to ship GPT-5 for free, but if you pay for $20 Plus plan, you'll get GPT-5 with advanced reasoning, and those with $200 Pro plan will get 'pro reasoning.' This is according to documents seen by BleepingComputer.
BleepingComputer previously reported that GPT-5 can automatically sync between reasoning and non-reasoning, but you can insist it to 'reason' or think harder to activate reasoning by default