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OpenAI Shuts Down `gpt-5.2-chat-latest`; Migration Requires More Than Replacing the Model Name
OpenAI discontinued `gpt-5.2-chat-latest` in the API on August 10 and officially recommends migrating to GPT‑5.5. The retirement targets an alias that tracks ChatGPT behavior, so engineering teams must still revalidate prompts, tool calls, and output formats rather than treating the migration as an equivalent routing switch.