OpenAI Blog · Feb 12, 2026

Introducing GPT-5.3-Codex-Spark

Reviewed by Errol Vogt, Site support technician & online learning analyst · original summary · editorial policy

Introducing GPT-5.3-Codex-Spark. Introducing GPT-5.3-Codex-Spark—our first real-time coding model. 15x faster generation, 128k context, now in research preview for ChatGPT Pro users. This update is relevant for small-office operators tracking changes in their tools.

Operator takeaway: For operators: review whether 'Introducing GPT-5.3-Codex-Spark' affects your current setup before relying on it in production.

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ChatGPT by OpenAI

ChatGPT is a general-purpose AI assistant for drafting emails, summarizing documents, and answering questions. Small offices use it for first-draft patient communications and routine writing, with human review before sending.

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