GPT-5.4 nano
OpenAI's cheapest, fastest GPT-5-class model for high-volume tasks.
GPT-5.4 nano specifications
| Provider | OpenAI |
|---|---|
| Context window | 400,000 tokens (400K) |
| Input price | $0.20 / 1M tokens |
| Output price | $1.25 / 1M tokens |
| Inputs | Text, Images |
| Reasoning mode | Yes |
| Vision (image input) | Yes |
| Tool / function calling | Yes |
| Native real-time web | No |
| Open-weight | No |
| Released | April 2026 |
Pricing & context web-verified June 2026 — confirm on OpenAI's pricing page.
What GPT-5.4 nano is best for
- High-volume classification and extraction
- Cheap, fast chat
- Cost-sensitive pipelines
How to prompt GPT-5.4 nano
- Use it for well-scoped, repetitive tasks where a frontier model is overkill.
- Give tight, explicit output formats — small models follow structure better than freeform asks.
- Batch similar requests to keep cost low.
Work with GPT-5.4 nano
- Build an optimized prompt with the OpenAI prompt generator.
- Estimate cost with the token counter & cost calculator, or compare every model on the AI model comparison page.
- Related reading: Best Chatgpt Prompts 2026.
- Official: chatgpt.com
Frequently asked questions
What is GPT-5.4 nano's context window?
GPT-5.4 nano has a 400,000-token context window (about 400K tokens) — the maximum amount of text it can consider at once.
How much does GPT-5.4 nano cost?
Via the OpenAI API, GPT-5.4 nano costs $0.20 per 1M input tokens and $1.25 per 1M output tokens (web-verified June 2026). Output tokens cost more, so the length of the model's reply usually drives the bill.
Is GPT-5.4 nano multimodal?
Yes — GPT-5.4 nano accepts Text, Images as input, not just text.
Is GPT-5.4 nano open-weight?
No — GPT-5.4 nano is available only through the OpenAI API, not as downloadable weights.