# OpenAI’s Codex AI Now in ChatGPT
OpenAI has introduced Codex, its most advanced AI coding assistant, to ChatGPT. This new feature is powered by codex-1, a specialized version of OpenAI’s o3 AI reasoning model optimized for software engineering tasks.
## What Can Codex Do?
Codex is designed to:
– Generate cleaner, more precise code than previous models
– Run tests on its own code until it passes
– Handle multiple tasks simultaneously without interrupting user workflows
The AI assistant operates in a cloud-based virtual environment and integrates with GitHub, allowing it to access users’ code repositories. It can:
– Write simple features
– Fix bugs
– Answer questions about codebases
– Run tests
## Availability and Pricing
Initially, Codex is available to ChatGPT Pro, Enterprise, and Team subscribers. OpenAI plans to expand access to ChatGPT Plus and Edu users soon. While early access is generous, rate limits will be introduced in the coming weeks, with an option to purchase additional credits.
## AI Coding Assistants on the Rise
The AI coding space is booming, with companies like Google, Microsoft, and Anthropic deploying their own AI-powered tools. Cursor, a leading AI coding platform, recently reported $300M in annual revenue and is raising funds at a $9B valuation.
## OpenAI’s Expansion in AI Development
OpenAI is aggressively expanding its AI coding tools, including:
– Codex CLI, an open-source terminal-based coding assistant
– o4-mini model for software engineering tasks
Additionally, OpenAI is reportedly acquiring Windsurf, another AI coding platform, for $3B.
## Safety and Limitations
Codex operates in an air-gapped environment, preventing it from accessing external APIs or the internet. While this enhances security, it may limit functionality. AI coding models still struggle with debugging, as highlighted in a recent Microsoft study.
## The Future of AI Coding
OpenAI envisions AI assistants like Codex becoming “virtual teammates”, handling tasks that take human engineers hours or days to complete.
With ChatGPT’s growing suite of AI tools, OpenAI is positioning itself as a key player in the AI-powered software development revolution.