OpenAI Reports ChatGPT Weekly Active Users Exceed 1.2 Billion
OpenAI announced at its Developer Day that ChatGPT has surpassed 1.2 billion weekly active users, up from 1.0 billion in July. Additionally, ChatGPT Work and Codex have reached over 35 million weekly users, with 2.5 million businesses now adopting OpenAI products. This growth highlights the rapid transition of generative AI from individual conversational tools to essential workplace assistants across enterprise workflows. It signals strong commercial momentum for OpenAI as organizations increasingly rely on AI for software development, document processing, and automated task execution. The enterprise expansion is powered by tools like Codex for automated software engineering and the newly launched 'Dots' AI agents. These agents run on autonomous cloud computers, enabling them to carry out multi-step tasks across thousands of connected applications.
## BACKGROUND
OpenAI Codex was originally launched as a natural language-to-code model fine-tuned from GPT-3 and has evolved into an AI coding agent suite integrated across desktop apps and IDEs. As the AI industry matures, AI developers are shifting focus from basic text generation toward autonomous enterprise agents capable of performing complex multi-application tasks.