# GPT-5.4 **GPT-5.4** is OpenAI's most capable frontier model, delivering higher-quality outputs with fewer iterations across coding, reasoning, and professional workflows. --- ## Overview GPT-5.4 brings the coding capabilities of GPT-5.3-Codex to the flagship frontier model. It excels at: - **Coding**: Production-quality code generation, polished front-end UI, repo-specific patterns, and multi-file changes with fewer retries - **Reasoning**: Configurable reasoning effort from none (fast, low-latency) to xhigh (deep multi-step reasoning) - **Agentic workflows**: Reduced end-to-end time across multi-step trajectories, fewer tokens and tool calls - **Document understanding**: Document-heavy and spreadsheet-heavy business workflows - **Image perception**: Improved multimodal tasks and image analysis - **Long context**: Up to 1,050,000 token context window --- ## Key improvements over GPT-5.2 - Coding, document understanding, tool use, and instruction following
