OpenAI will retire GPT-5.3-Codex-Spark next week, according to Tibo Sottiaux, the company’s head of core products. He said usage of the model had been falling and that OpenAI now has clearly better models available. Spark launched in February as a smaller, faster version of GPT-5.3-Codex. It was also described as OpenAI’s first model built specifically for real-time coding. The model ran on Cerebras chips, delivered generation speeds of more than 1,000 tokens per second, and was available only to ChatGPT Pro users. The move will end a product that had been on the market for about seven months.
OpenAI will retire GPT-5.3-Codex-Spark next week, according to Tibo Sottiaux, the company’s head of core products.
Sottiaux said usage of the model had been declining, and OpenAI now has clearly better models.
Spark launched in February for real-time coding
Spark went live in February as a small, high-speed version of GPT-5.3-Codex. OpenAI described it as its first model built specifically for real-time coding.
The model ran on Cerebras chips, generated at more than 1,000 tokens per second, and was offered only to ChatGPT Pro users.
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