# GPT-5.4: AI model fact sheet

- **Provider:** openai
- **Released:** 2026-03-05
- **Context window:** 1,050,000 tokens
- **API pricing:** $2.50 / 1M input, $15.00 / 1M output
- **OpenRouter ID:** openai/gpt-5.4
- **Capabilities:** conversation, reasoning, code-generation, analysis, agentic-tool-use

GPT-5.4 is OpenAI's latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for text and image inputs, enabling high-context reasoning, coding, and multimodal analysis within the same workflow. The model delivers improved performance in coding, document understanding, tool use, and instruction following.

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/gpt-5.4