The OpenAI API lets developers call GPT and related models from their own software. It evolves continuously: new endpoints, model versions, parameters, and occasional deprecations all land through the platform changelog.
API changes can be breaking (a deprecated model or parameter) or additive (a new capability). Either way, reading the API changelog is part of keeping an OpenAI-powered product healthy.
Why it matters
API deprecations can break production apps with little warning, and new endpoints can simplify code you already wrote. Watching the OpenAI API changelog is the difference between a smooth upgrade and a surprise outage.
Deep dive: The OpenAI API Changelog, Made Readable
Related terms
See OpenAI API in action across releases — browse the Claude Code changelog.
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