OpenAI
Launch calculator$GPT-5.1 nano Pricing & Token Costs (2025)
Per 1M tokens: input $0.05 · output $0.40$ · cached 0.005. Context window $200,000 tokens with source and verification details.
Key metrics
- Context window
- 200,000 tokens
- Input price
- $0.05 / 1M tokens
- Output price
- $0.40 / 1M tokens
- Cached input
- $0.005 / 1M tokens
Trusted sources
Official link:https://platform.openai.com/docs/pricing
Last verified: 2025-11-19
Pricing notes
- · Ultra-low-cost GPT-5.1 variant ideal for high-volume applications
Multi-currency (per 1M tokens)
| Currency | Input | Cached | Output |
|---|---|---|---|
| USD | $0.05 | $0.01 | $0.40 |
| CNY | ¥0.36 | ¥0.04 | ¥2.86 |
| EUR | 0,05 € | 0,00 € | 0,37 € |
| JPY | ￥7 | ￥1 | ￥58 |
* Live search cost uses sources / 1000 × price and currently applies to xAI Grok only.
FAQ
How does cached input pricing work?
With official caching enabled, input pricing drops to $0.005 / million tokens for repeated content while output remains $0.4 / million tokens.
How frequently is the pricing updated?
All prices reference the official documentation (https://platform.openai.com/docs/pricing); last verified on 2025-11-19. Updates land as soon as providers revise their schedules.