GPT-5.4 Nano
GPT-5.4 nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks.
Specifications
| Lab | OpenAI |
|---|---|
| Context window | 400K tokens |
| Input price | $0.20/1M |
| Output price | $1.25/1M |
| Release | Mar 2026 |
In Depth: GPT-5.4 Nano
Summary
GPT-5.4 Nano is an AI model from OpenAI.
Released in Mar 2026. It currently appears in the Overall category on LMRank. It takes file, image, and text input and produces text output, with a context window of 400K tokens. Input pricing is $0.20 per 1M tokens and output is $1.25 per 1M tokens on OpenRouter.