Home › Archive › GPT Codex line GPT-5.3-Codex-Spark was released by OpenAI on February 12, 2026, as a coding model in the GPT Codex line.
Release 7 of 7 in the GPT Codex line . Came 7 days after GPT-5.3 Codex , released Feb 5, 2026. The last release before the line was discontinued on March 5, 2026. These days the line ships a new model about every 49 days. No detailed card for this model: we only add numbers published by the maker or by independent benchmarks. Sources: OpenAI
Get new AI models by email Every Monday, only when something shipped: the AI models that came out, what each one changed, and which lines are due next.
We email you a link to confirm first · unsubscribe anytime · read past issues · about the newsletter
GPT-5.3-Codex-Spark is the current model in this line. The card shows how long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.
Days since last release
Days since last release
GPT-5.3-Codex-Spark · Feb 12, 2026
Recent gaps
Recent gaps
GPT-5.3-Codex-Spark · Feb 2026
GPT-5.1-Codex-Max · Nov 2025