On Friday, OpenAI introduced the launch of a analysis preview of Codex, its most superior AI coding assistant function in ChatGPT.
Codex runs on codex-1, a particular model of OpenAI’s o3 AI mannequin, made particularly for coding duties. In accordance with OpenAI, Codex-1 writes cleaner code, follows directions higher, and might run and repair its code till it really works accurately.
Codex operates in a safe, cloud-based digital laptop. In the event you hyperlink your GitHub account, Codex can entry your code straight. It will possibly carry out duties like writing easy options, fixing bugs, answering coding questions, and working assessments often in 1 to half-hour.
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It’s additionally designed to multitask, so you’ll be able to maintain utilizing your laptop or shopping the web whereas it really works within the background.
Who Can Use Codex?
Beginning now, Codex is out there to customers with ChatGPT Professional, Workforce, and Enterprise plans. OpenAI says it’ll provide “beneficiant entry” for now however will quickly introduce charge limits, the place you could must pay for further utilization. Within the close to future, Codex may also be out there to ChatGPT Plus and Edu customers.
AI instruments for software program growth usually known as “vibe coders” have gotten very fashionable. High tech firms like Google and Microsoft say that AI now helps write about 30% of their code. Different firms like Anthropic and Google have additionally launched or upgraded their very own AI coding instruments lately.
These instruments are rising quick. For instance, Cursor, one other AI coding assistant, is now making round $300 million per 12 months and is valued at $9 billion. OpenAI additionally simply purchased Windsurf, a significant participant within the coding AI area, for $3 billion clearly aiming to turn out to be a frontrunner on this space.
How OpenAI Codex Works?
Codex seems within the ChatGPT sidebar. You may give it coding duties by typing a immediate and clicking “Code,” or ask questions on your code with the “Ask” button. You can too see what duties it’s engaged on and monitor progress.
Josh Tobin, OpenAI’s Brokers Analysis Lead, mentioned the aim is to make Codex act like a “digital teammate”, dealing with duties that may usually take human engineers hours and even days.

OpenAI is already utilizing Codex internally to hurry up repetitive duties, construct new options, and write documentation.
Security and Limitations
Codex was constructed with security in thoughts. It received’t assist with requests to create malicious software program and runs in a restricted atmosphere with out web entry or exterior APIs. This helps stop misuse however can restrict what the software can do.
Nonetheless, like all AI instruments, Codex isn’t correct. AI coding brokers usually make errors. A Microsoft research confirmed that high fashions nonetheless wrestle with debugging. However that hasn’t slowed down funding and curiosity in these instruments.
Codex CLI and API Pricing
OpenAI additionally up to date Codex CLI, a coding agent that works in your terminal. It now makes use of a smaller, sooner mannequin known as o4-mini, which can be out there through the OpenAI API for:
- $1.50 per 1 million enter tokens
- $6 per 1 million output tokens
(For reference, 1 million tokens = about 750,000 phrases.)
Greater Plan for ChatGPT
Codex is only one of a number of new instruments OpenAI is including to ChatGPT. Others embrace:
Sora (AI video platform)
Deep Analysis (analysis assistant)
Operator (net shopping agent)
These extras are designed to make ChatGPT extra helpful and appeal to extra subscribers or encourage customers to pay for extra entry, particularly with instruments like Codex.