Major Upgrade: GPT-5.3-Codex Makes Its Debut

OpenAI has officially launched GPT-5.3-Codex, a groundbreaking enhancement in code generation technology. Compared to its predecessor, this version delivers significantly improved performance, offering developers a smarter and faster programming experience.

Performance Leap: Faster and More Efficient

This latest model uses only half the tokens of version 5.2-Codex for the same workload, while increasing per-token processing speed by more than 25%. This efficiency boost allows developers to achieve more with fewer resources and reduced costs.

Real-Time Updates and Resource Optimization

GPT-5.3-Codex supports dynamic adjustments and real-time updates during task execution, enhancing interactive coding capabilities. It also optimizes computing resource utilization, improving system efficiency for multi-task environments.

  • Enhanced code generation accuracy
  • Improved execution control
  • Optimized computing performance