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GPT-5.3-Codex-Spark

OpenAI | In Edition 21,

The call on this one

DEPLOYif you pay for ChatGPT Pro

SOURCE OpenAI, Introducing GPT-5.3-Codex-Spark

OpenAI released a research preview of GPT-5.3-Codex-Spark, a smaller GPT-5.3-Codex model that delivers more than 1000 tokens per second on Cerebras hardware, with a 128k context window and text-only input.

Added to The Deploy Log , updated . Read Edition 21, the edition that carried it.

60 rows from OpenAI in The Deploy Log are dated on or before this one, this one included.

The same day from OpenAI: ChatGPT on GenAI.mil (0 days apart). After it: OpenAI-Amazon partnership, 13 days later.

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