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GPT-5.3-Codex-Spark and OpenAI Codex

2 products from OpenAI

Retired

GPT-5.3-Codex-Spark research preview retired

GPT-5.3-Codex-Spark was deprecated on September 14, 2026 and is no longer available in the ChatGPT desktop app, Codex CLI or IDE extension.

Who is affected:
Codex users and scripts that select gpt-5.3-codex-spark.
Action needed:
Switch to a recommended model. Use Fast mode for speed.

Source

"GPT-5.3-Codex-Spark was deprecated on September 14, 2026."

Codex changelog

Published

Open the sourcedevelopers.openai.com

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