About GPT-5.4 Pro
GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token context window (922K input, 128K output) with support for text and image inputs. Optimized for step-by-step reasoning, instruction following, and accuracy, GPT-5.4 Pro excels at agentic coding, long-context workflows, and multi-step problem solving.
Specifications
- Provider
- OpenAI
- Context Length
- 1,050,000 tokens
- Input Types
- text, image, file
- Output Types
- text
- Category
- GPT
- Added
- 3/5/2026