GPT-5 Nano
fastrouter / openai/gpt-5-nano
Input price
$0.05
per 1M tokens
Output price
$0.4
per 1M tokens
Context
400K
tokens
Capabilities
✓ Reasoning✓ Tool calls✓ Image input— Open weights
| cache read | $0.005 |
| Context | 400,000 tokens |
| max output | 128,000 tokens |
| Released | 2025-08-07 |
| Data updated | 2025-08-07 |
Prices are official/data-source rates (per 1M tokens), not what relays actually charge — relay prices vary with discounts and group multipliers. See methodology.