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Next week we’ll be retiring GPT-5.3-Codex-Spark. Can you believe we shipped a model named as such!! It's had a good run and was a lot of fun, but usage has been declining and we have significantly better models now. Time to make room for the future.
Anyone building on GPT-5.3-Codex-Spark needs to migrate before its retirement next week as OpenAI shifts usage to newer Codex models.
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