SIDE BY SIDE
GPT-5.4 Mini vs GPT-5.4 Nano
Both are GPT models. GPT-5.4 Nano was added to OpenRouter on 2026-03-17, GPT-5.4 Mini on 2026-03-17.
| Field | GPT-5.4 Mini | GPT-5.4 Nano |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Family | GPT | GPT |
| Province | Silvergrass Fields | Silvergrass Fields |
| Context window | 400K tokens | 400K tokens |
| Maximum output | 128K tokens | 128K tokens |
| Input / 1M tokens | $0.750 | $0.200 |
| Output / 1M tokens | $4.50 | $1.25 |
| Accepts | text, files, images | text, files, images |
| Produces | text | text |
| Reasoning | Yes | Yes |
| Tool use | Yes | Yes |
| Added to OpenRouter | 2026-03-17 | 2026-03-17 |
| Model ID | openai/gpt-5.4-mini | openai/gpt-5.4-nano |
Questions and answers
Which is cheaper, GPT-5.4 Mini or GPT-5.4 Nano?
GPT-5.4 Nano costs less for both input ($0.200 vs $0.750) and output ($1.25 vs $4.50) per million tokens. On input, GPT-5.4 Nano is 73% cheaper.
Which has the larger context window?
Both have a 400K-token context window.
What can one do that the other cannot?
Nothing among reasoning, tool use and image input: both support reasoning, tool use and image input.
Answers are computed from the 2026-10-24 catalog snapshot.