According to @OpenAI, GPT-5.2-Codex is now available in Codex, targeting agentic coding in real-world software development and defensive cybersecurity. Source: OpenAI Twitter announcement on Dec 18, 2025 and the OpenAI blog Introducing GPT-5.2-Codex. It claims more reliable performance on complex tasks and effective scalability across large projects, creating a concrete capability upgrade that traders can log as a dated product release in the AI software and cybersecurity stack. Source: OpenAI Twitter announcement on Dec 18, 2025 and the OpenAI blog Introducing GPT-5.2-Codex. For positioning, the confirmed availability and stated focus areas offer a time-stamped reference for monitoring AI development-tool and security automation themes in equities and crypto narratives, with no token or pricing details in the Twitter announcement. Source: OpenAI Twitter announcement on Dec 18, 2025.

According to Greg Brockman, OpenAI's Codex is getting very good at finding security vulnerabilities, and OpenAI is exploring trusted access programs for defensive cybersecurity to help enterprises and the open-source community ship more secure code. Source: Greg Brockman on X (Dec 18, 2025) https://twitter.com/gdb/status/2001758799657603185; OpenAI https://openai.com/index/introducing-gpt-5-2-codex/ For crypto traders, stronger vulnerability discovery and secure development practices are materially relevant because flaws in smart contracts can lead to irreversible loss of funds in DeFi. Source: Ethereum.org smart contract security guidelines https://ethereum.org/en/developers/docs/smart-contracts/security/