OpenAI launched a research preview of Codex, a cloud-based software engineering agent on Friday. The AI coding agent is powered by codex-1, a version of OpenAI o3 optimized for software engineering, the AI platform said.
Codex can write features, answer questions about codebases, fix bugs, and propose pull requests for review. Each task will run in its own cloud sandbox, preloaded with the user's repository.
OpenAI said Codex will be available on ChatGPT Pro, Enterprise, and Team users today, with support for Plus and Edu coming soon. It can be accessed through the ChatGPT sidebar, and assigned new tasks by typing a prompt and clicking 'Code'. Users can ask questions about a codebase by clicking 'Ask'.
Codex's actions can be seen through citations of terminal logs and test outputs, helping trace each step taken. Users can then review the results, request further revisions, open a GitHub pull request, or directly integrate the changes on their workspaces.
OpenAI CEO Sam Altman described codex as "a software engineering agent that runs in the cloud and does tasks for you, like writing a new feature of fixing a bug."
The company said Codex was trained to identify and refuse requests aimed at the development of malicious software, addressing concerns that malicious actors could misuse this sophisticated coding agent for cyber attacks and other harmful uses.
Apart from OpenAI, Microsoft-owned GitHub, Google and Anthropic, along with startups including Anysphere and Windsurf, offer AI tools for to aid programmers.
Earlier this month, Google DeepMind added vastly improved coding capabilities to Gemini 2.5 Pro (Preview). In the run-up to its recently concluded Google I/O 2025 event, the search major released the AI agenct, now branded the I/O Edition.
Internally labelled gemini-2.5-pro-preview-05-06, the model can now deliver significant improvements in code transformation, code editing, and even in developing complex agentic workflows — making it far more capable for software developers and engineers, according to Google.
Codex can write features, answer questions about codebases, fix bugs, and propose pull requests for review. Each task will run in its own cloud sandbox, preloaded with the user's repository.
OpenAI said Codex will be available on ChatGPT Pro, Enterprise, and Team users today, with support for Plus and Edu coming soon. It can be accessed through the ChatGPT sidebar, and assigned new tasks by typing a prompt and clicking 'Code'. Users can ask questions about a codebase by clicking 'Ask'.
Codex's actions can be seen through citations of terminal logs and test outputs, helping trace each step taken. Users can then review the results, request further revisions, open a GitHub pull request, or directly integrate the changes on their workspaces.
OpenAI CEO Sam Altman described codex as "a software engineering agent that runs in the cloud and does tasks for you, like writing a new feature of fixing a bug."
The company said Codex was trained to identify and refuse requests aimed at the development of malicious software, addressing concerns that malicious actors could misuse this sophisticated coding agent for cyber attacks and other harmful uses.
Apart from OpenAI, Microsoft-owned GitHub, Google and Anthropic, along with startups including Anysphere and Windsurf, offer AI tools for to aid programmers.
Earlier this month, Google DeepMind added vastly improved coding capabilities to Gemini 2.5 Pro (Preview). In the run-up to its recently concluded Google I/O 2025 event, the search major released the AI agenct, now branded the I/O Edition.
Internally labelled gemini-2.5-pro-preview-05-06, the model can now deliver significant improvements in code transformation, code editing, and even in developing complex agentic workflows — making it far more capable for software developers and engineers, according to Google.
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