OpenAI Codex evolves further: reasoning speed increased by 40%, significantly reducing programming latency

```

OpenAI is accelerating the upgrade of its AI programming ecosystem, attempting to regain market influence from strong rivals such as Anthropic.

The official OpenAI developer account announced today that its core programming tool Codex has undergone a major upgrade. OpenAI has not only launched a standalone desktop application, but also achieved breakthroughs in underlying model performance: The models GPT-5.2 and GPT-5.2-Codex have realized approximately 40% overall speed improvement without changing parameter weights.

For developers and enterprise users, speed is the primary productivity of AI programming tools. OpenAI stated that this 40% speed increase is entirely due to engineering optimizations of its inference stack.

This means all API clients can enjoy ultra-fast responses directly without needing to change any code or adjust model architecture. In multi-agent collaboration scenarios, lower latency will directly translate into a more coherent development experience, drastically reducing the waiting time from logic generation to code implementation.

From “Conversation Assistant” to “Command Center”

The company’s newly released Codex desktop application marks a paradigm shift in OpenAI’s programming strategy. Unlike traditional conversational interfaces, Codex is designed as an “Agent Command Center.”

It supports users calling multiple AI agents to work in parallel. Using the “Worktrees” feature, developers can assign different agents to handle UI design, backend architecture, and bug scanning, without interfering with each other. Additionally, Codex has integrated the MCP protocol, allowing AI agents to directly operate external software.

OpenAI CEO Sam Altman said frankly when discussing AI programmers’ competitive advantage:

“The models never run out of dopamine. They don’t get frustrated, nor do they run out of energy. They keep trying, and their motivation never wanes.”

Targeting Anthropic’s “Billion Dollar Deal”

This intensive update from OpenAI is highly targeted. According to Reuters, despite OpenAI’s lead in general large models, it has been behind Anthropic in the AI programming niche market.

Data shows Anthropic’s programming tool Claude Code reached an annualized revenue of $1 billion within just six months after going public. To take back this lucrative “meat,” OpenAI not only sped up significantly but is also offering “limited time benefits”: ChatGPT free users and Go version users can experience Codex, while speed limits for Plus and enterprise users will be directly doubled.

For the market, Codex’s evolution lowers the threshold for software development. As some observers say, this opens the era of “Vibe Coding”—even non-technical people can command an army of agents with text instructions and “whip up” a fully functional app within minutes.

Risk Warning and DisclaimerThere are risks in the market; investments need to be made with caution. This article does not constitute personal investment advice and does not consider individuals’ specific investment objectives, financial situations, or needs. Users should consider whether any opinions, views, or conclusions in this article fit their particular circumstances. Investment is at your own risk. ```