AI Launch Profile

OpenAI launches GPT-5.3-Codex-Spark for real-time coding in Codex

OpenAI released GPT-5.3-Codex-Spark, a smaller ultra-fast Codex model designed for real-time coding collaboration and low-latency edits.

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At a glance

Launch Snapshot

Company: OpenAI
Launch date: February 12, 2026
Launch type: Model Release
Category: AI Agents, AI Coding Tools, AI Developer Tools
Audience: Developers
Pricing: Research preview availability for ChatGPT Pro users at launch, with separate rate limits and limited API partner access.
Free plan: No
API: Yes
Open weights/source: No

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Codex-Spark matters because speed changes how coding agents feel in interactive sessions.

Developers who want fast interactive coding help in Codex while reserving larger models for longer, heavier autonomous work.

Pairing fast targeted edits with larger long-running Codex tasks creates a more complete agent workflow.

Research-preview status, rate limits, and specialized serving mean access and reliability need monitoring.

Source list

Official site openai.com Demo openai.com