OpenAI Introduces a Streamlined Version of Codex AI Programmer

OpenAI releases a streamlined version of Codex programming tool.

OpenAI has released a streamlined version of its programming tool, Codex.

GPT-5.3-Codex-Spark is now in research preview.

You can just build things—faster. pic.twitter.com/85LzDOgcQj

— OpenAI (@OpenAI) February 12, 2026

GPT-5.3-Codex-Spark is positioned as a reduced version of the model introduced in February, GPT-5.3 Codex. It is designed for faster inference. To achieve this, the startup employed a specialized chip from its hardware partner, Cerebras.

In January, the companies announced their collaboration.

“The integration of Cerebras into our computing solutions aims to significantly speed up AI response times,” OpenAI stated at the time.

The firm describes the Spark chip as the “first milestone” of the partnership.

The processor is designed for rapid real-time operation. It is powered by the Wafer Scale Engine 3, the third generation of Cerebras’ megachips, equipped with four trillion transistors.

OpenAI describes the new tool as a “daily productivity driver,” aiding in rapid prototyping. The original GPT-5.3 Codex version is intended for more extended and labor-intensive tasks.

In an official statement, OpenAI emphasized that Spark is engineered for minimal latency in Codex.

“Codex-Spark is the first step towards Codex operating in two complementary modes: real-time collaboration for quick iterations and extended tasks requiring deep reasoning,” the company noted.

Back in February 2026, OpenAI released a standalone application for the Codex programming assistant.