OpenAI Releases GPT-5.3-Codex Improving Agentic Coding

OpenAI has introduced GPT-5.3-Codex, an agentic coding model claiming state-of-the-art results and broader availability across DigitalOcean Gradient, ChatGPT, and Codex resources. Benchmarks report improved performance on SWE-Bench Pro and Terminal-Bench, and OpenAI cites roughly 25% faster inference than GPT-5.2-Codex; a provided tutorial demonstrates building a real-time Z-Image-Turbo app in about 30 minutes with five prompts.