A smaller, ultra-fast GPT-5.3-Codex variant designed for real-time coding in Codex.
- Feb 12, 2026
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Releases
Feb 12, 2026GPT-5.3-Codex-Spark research preview releasedModel release
OpenAI released a research preview of GPT-5.3-Codex-Spark, a smaller model optimized for near-real-time coding.