At a Glance · AI-generated

OpenAI expanded its Codex platform capabilities throughout the second half of 2025, beginning with infrastructure upgrades in September and moving to general availability in October. The company subsequently introduced new features including an agent loop system, a dedicated app, and an App Server designed to support agent-first architectures. By February 2026, OpenAI addressed scalability challenges by implementing solutions to move beyond rate limits, enabling broader access to Codex and related services like Sora.