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FrontierThe story, in brief

Introducing GPT-5.2-Codex

OpenAI just shipped GPT-5.2-Codex. Long-horizon reasoning + large-scale code transformations.

Reporting by OpenAI Blog 1 min brief
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The KeyNews take

Why it matters

OpenAI is doubling down on coding-specific models as a competitive moat. A dedicated code model signals the company believes general-purpose LLMs aren't enough to own the developer workflow—and it matters for anyone building on top of these APIs.

The key facts

4 to know

  1. GPT-5.2-Codex: OpenAI's advanced coding model

  2. Capabilities: long-horizon reasoning, large-scale code transformations

  3. Enhanced cybersecurity capabilities included

  4. Published Dec 18, 2025 from official OpenAI blog

Go to the source

OpenAI Blogopenai.com

Publisher excerpt: GPT-5.2-Codex is OpenAI’s most advanced coding model, offering long-horizon reasoning, large-scale code transformations, and enhanced cybersecurity capabilities.
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