OpenAI ends support for legacy API models: What developers need to know
OpenAI has officially retired two snapshots of its conversational models within the API. This move is part of a strategy to reduce maintenance of older versions. Developers are advised to migrate to the gpt-5.6-sol model.
The AI giant officially retired two snapshots of its conversational models within the API yesterday: gpt-5.2-chat-latest and gpt-5.3-chat-latest. This move, announced back in May, was scheduled in the company's developer documentation for August 10 and is part of a tightening policy to reduce maintenance of older versions.
According to official documentation, OpenAI recommends that all development teams and organizations using the retired models switch as soon as possible to the gpt-5.6-sol model, which has been defined as the official and updated replacement for both.
It is important to clarify that this change occurs exclusively at the API level and does not affect regular users interacting with ChatGPT via the direct service interface. The impact is focused on companies, developers, and external services that have built products and applications based on specific snapshots.
The snapshot mechanism allows developers to "freeze" a model's behavior around a specific version to ensure stability. However, once OpenAI deletes a snapshot from its servers, applications that have not been updated to the new model will stop functioning properly.
This move is not an isolated event, but part of a comprehensive strategy by the company to rapidly reduce the number of legacy models it maintains in parallel. The company's deprecation list includes additional end dates for the coming months, covering older GPT families, image models, and peripheral development tools.
