OpenAI Enterprise Model Note
OpenAI says GPT‑4o remains available to Business, Enterprise and Edu customers via Custom GPTs even as other models are retired from ChatGPT, reflecting differentiated product management for enterprise users. The communication emphasises product stability and controlled access for paying organisations. (help.openai.com)
OpenAI told paying workplace and campus customers that GPT-4o stayed usable inside Custom GPTs after it disappeared from regular ChatGPT menus, then set a final cutoff of April 3, 2026. (help.openai.com) The company’s Help Center says GPT-4o, GPT-4.1, GPT-4.1 mini, OpenAI o4-mini, and GPT-5 Instant and GPT-5 Thinking were retired from ChatGPT on February 13, 2026. The same notice says GPT-5.1 models were retired on March 11, 2026 across normal chats and GPTs. (help.openai.com) For ChatGPT Business, Enterprise, and Edu accounts, OpenAI carved out one exception: GPT-4o remained available inside Custom GPTs until April 3, 2026, even though it was no longer offered in standard chats. OpenAI said application programming interface access was unchanged. (help.openai.com) Custom GPTs are user-built versions of ChatGPT that can carry saved instructions, uploaded knowledge files, connected tools, and version history. OpenAI’s builder documentation says admins in Enterprise and Edu can also control who can build, share, and use those GPTs inside a workspace. (help.openai.com, help.openai.com) That meant the model change was not a simple on-off switch across every OpenAI product surface. OpenAI kept one older model running in a controlled part of its workplace plans while removing it from the main ChatGPT picker. (help.openai.com, help.openai.com) The same language appeared across multiple support pages, including Business model limits, Enterprise and Edu model limits, GPT management, rate cards, and the GPT-5.3 and GPT-5.4 product note. OpenAI used that repeated notice to tell administrators and end users that the exception was temporary and plan-specific. (help.openai.com, help.openai.com, help.openai.com) OpenAI also tied the exception to governance tools that already exist in enterprise workspaces. Its admin guidance says workspace owners can manage GPT access, collaboration, and sharing, which lets organizations limit where a legacy model is still used. (help.openai.com) By April 12, 2026, that bridge period had ended. OpenAI’s retirement notice says GPT-4o was “fully retired across all plans” after April 3, closing the last in-product exception for Business, Enterprise, and Edu customers. (help.openai.com)
