I noticed that some YouTubers had codex but not the same interface as me
#codex?
limpid frost
hot arrowBOT
Hi @limpid frost. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
Codex is OpenAI’s cloud-based software engineering agent designed to help professional developers by connecting to your codebase and automating tasks like bug fixing, feature development, and test generation. It runs tasks in parallel in the cloud, allowing engineers to focus on higher-level work while Codex handles routine coding tasks. You can access Codex through ChatGPT at chatgpt.com/codex if your workspace or subscription supports it. There is also a Codex CLI, which is a command-line tool you can run locally on your machine, offering a different interface and workflow compared to the cloud-based version in ChatGPT. This might explain why you see different interfaces in YouTube videos—some people are using the web-based Codex in ChatGPT, while others are using the Codex CLI in their terminal or with different settings or rollout stagesWhat is Codex in ChatGPT?, Codex Overview, Codex CLI Getting Started.
Additionally, Codex is being rolled out in stages to different user groups (Pro, Enterprise, Team, etc.), so availability and interface may vary depending on your subscription and when your account receives accessCodex not opening in chatgpt.
If you’re not seeing the same interface as others, it could be due to:
- The version (web vs. CLI)
- Your subscription level or workspace settings
- The rollout status for your account
If you’re in a workspace, an admin may need to enable Codex for your team in the workspace settingsHow workspace admins can turn Codex ON.
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limpid frost
@hot arrow Is the codex more advanced in the "pro" subscription?
hot arrowBOT
Let me check the knowledge base for you again. One moment! :books:
Based on the available knowledge sources, there is no indication that the Codex agent itself is more advanced or has different capabilities in the "Pro" subscription compared to other eligible plans (such as Team or Enterprise). The "Pro" subscription does provide early or prioritized access to new features—including Codex—and may offer higher usage limits, but the underlying Codex agent appears to be the same across supported plans. The main differences are in access, usage limits, and rollout timing, not in the technical advancement of the Codex agent itself What is ChatGPT Pro? Codex in ChatGPT.
If you are on a Pro plan, you may get earlier access to Codex features and higher usage caps, but the Codex agent’s core capabilities are not described as being more advanced for Pro users in the documentation.
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
limpid frost
@hot arrow Is it possible to change the codex model?
hot arrowBOT
Let me check the knowledge base for you again. One moment! :books:
Yes, it is possible to change the Codex model, but this depends on how you are using Codex:
-
Codex CLI: You can specify which model Codex uses by providing the
-mflag (for example,codex -m o3). By default, Codex CLI targets o4-mini for fast reasoning, but you can select any model available in the Responses API Codex CLI Getting Started. -
Codex in ChatGPT: The documentation does not explicitly state that you can change the Codex model within the ChatGPT web interface. The model selection appears to be more flexible in the CLI than in the web interface Codex in ChatGPT.
So, if you are using the Codex CLI, you have the ability to change the model. If you are using Codex within ChatGPT, model selection may be limited or managed automatically.
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
limpid frost
@hot arrow codex is updated?
hot arrowBOT
Let me check the knowledge base for you again. One moment! :books:
Yes, Codex is actively updated. The changelog shows frequent updates, including new features, improvements, and bug fixes. For example, recent updates in June 2025 added features like "Best of N" (generating multiple responses for a single task), support for agent internet access, improved onboarding, and performance enhancements such as reduced latency and increased setup script duration limits. These updates demonstrate that Codex continues to evolve with regular improvements and new capabilities Codex Changelog.
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limpid frost
@hot arrow codex is bugging today unable to charge my environments
hot arrowBOT
Let me check the knowledge base for you again. One moment! :books:
There have been recent reports from users experiencing issues with Codex environments, such as being unable to load or edit environments and seeing errors like “Error loading environment.” In some cases, these issues resolved on their own after some time, possibly due to backend fixes or temporary outages. If you are unable to access or "charge" (load) your environments today, it could be related to a temporary service issue or outage Codex – Error Loading Environment, Codex down here in SF. Anyone else?, Codex Onboarding redirect loop.