OpenAI is preparing the GPT-5.1 family for public rollout. This includes GPT-5.1 (base), GPT-5.1 Reasoning, and GPT-5.1 Pro for those who pay a $200 monthly subscription.

My sources tell me new GPT-5.1 models are headed to Azure, and that indicates the rollout is weeks away.

This also aligns with GPT’s release cadence.

GPT-5 shipped on August 7, and OpenAI typically releases a new model every three to four months.

GPT-5.1 won’t be dramatically better than GPT-5, but I am expecting several improvements to health-related guardians and faster performance.

At the same time, OpenAI recently launched a new Codex model called ‘codex-mini-high.’

Codex is slowly getting better

OpenAI recently launched GPT-5-Codex-Mini, which is a cost-efficient version of the Codex model, but it’s almost as good as Codex High. At the same time, it offers 50% higher rate limits.

OpenAI says GPT-5-Codex-Mini is designed for easier tasks or to extend usage when you’re close to hitting rate limits.

After the new update, Codex will suggest switching to Codex-Mini when you reach 90% of your limits so you can work longer without interruptions.

“GPT-5-Codex-Mini allows roughly 4x more usage than GPT-5-Codex, at a slight capability tradeoff due to the more compact model,” OpenAI noted. “ChatGPT Plus, Business, and Edu users get 50% higher rate limits as a result, and Pro and Enterprise accounts get priority processing for maximum speed.”

GPT-5.1 could also unlock new performance limits for Codex.

However, OpenAI is not the only company preparing a new model, as Google is also testing Gemini 3 Pro. There are also reports of new Claude model under development.