GPT-5.4
GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system.
Specifications
| Lab | OpenAI |
|---|---|
| Context window | 1.1M tokens |
| Input price | $2.50/1M |
| Output price | $15.00/1M |
| Release | Mar 2026 |
In Depth: GPT-5.4
Summary
GPT-5.4 is an AI model from OpenAI.
Released in Mar 2026. It currently appears in the Overall category on LMRank. It takes text, image, and file input and produces text output, with a context window of 1.1M tokens. Input pricing is $2.50 per 1M tokens and output is $15.00 per 1M tokens on OpenRouter.