OpenAI has launched GPT-5.3 Codex, enhancing its AI capabilities, alongside a new corporate platform called Frontier, aimed at improving business AI integration.
OpenAI has introduced its latest AI programming model, GPT-5.3 Codex, in a notable move that follows closely on the heels of Anthropic's launch of its neural network, Claude Opus 4.6.
GPT-5.3 Codex is now available in Codex.
You can just build things.
— OpenAI (@OpenAI) February 5, 2026
This new large language model (LLM) enhances the Codex application, evolving it from a basic coding assistant into a robust tool that can perform a wide array of tasks typically managed by developers and professionals.
OpenAI's assessments indicate that the GPT-5.3 Codex can generate complex games and applications from scratch in just a few days, showcasing significant advancements in functionality.
Notably, this version operates 25% faster than its predecessor, GPT-5.2, and is unique as it contributed to its own development, with team members utilizing early versions for debugging and performance testing.
Both OpenAI and Anthropic launched their respective products nearly simultaneously, with Anthropic adjusting its launch timing slightly ahead of OpenAI's announcement.
Introduction of Frontier Platform
In addition to GPT-5.3 Codex, OpenAI unveiled a new corporate platform named Frontier, designed to integrate various systems and data within organizations.
This platform aims to enhance the management and deployment of AI agents, allowing them to autonomously execute tasks for businesses.
"Frontier is an acknowledgment that we won't create everything ourselves. It's better to work with an ecosystem to create together," remarked Fiji Simo, OpenAI's CEO for applications.
The company has been expanding its footprint in the B2B market, recently surpassing 1 million corporate users. CFO Sarah Friar noted that the B2B sector now constitutes about 40% of OpenAI's business.
Frontier complements existing offerings such as ChatGPT Enterprise, providing agents with shared access to organizational context, which allows them to conduct sophisticated tasks and data analysis.
Earlier in January, a specialized version of the GPT-5 line, GPT-5.2 Codex, was also made available in Cursor.
