Overview

• Codex is powered by codex-1, a version of OpenAI’s o3 model optimized for software engineering, enabling tasks like writing features, debugging, and running tests autonomously.
• The agent operates in a secure, air-gapped virtual computer with GitHub integration, designed to refuse malicious software requests and enhance safety.
• Initially available to ChatGPT Pro, Enterprise, and Team subscribers, Codex will expand to Plus and Edu users, with rate limits and purchasable credits introduced in the coming weeks.
• OpenAI is updating its Codex CLI tool with an o4-mini model optimized for coding, available via API with a pay-per-token pricing structure.
• The company is reportedly in talks to acquire Windsurf, a leading coding tool developer, for $3 billion to strengthen its position in the competitive AI coding market.