Grok 4.1 arrives shortly after GPT 5.1 and the AI rivalry gets real
Grok 4.1 is rolling out across grok.com and the X apps just as GPT 5.1 arrives, and the competition between OpenAI and xAI is getting intense.
GPT 5.1
GPT 5.1 brings a smarter and more customizable ChatGPT experience
OpenAI has released GPT 5.1 with better instruction following, upgraded reasoning, and new tone controls that make ChatGPT easier to customize for everyday use.