GPT-5.5
pioneer / gpt-5.5
Input price
$5
per 1M tokens
Output price
$30
per 1M tokens
Context
1,050K
tokens
Capabilities
✓ Reasoning✓ Tool calls✓ Image input— Open weights
| cache read | $0.5 |
| cache write | $5 |
| Context | 1,050,000 tokens |
| max output | 128,000 tokens |
| Released | 2026-04-23 |
| Data updated | 2026-04-23 |
Prices are official/data-source rates (per 1M tokens), not what relays actually charge — relay prices vary with discounts and group multipliers. See methodology.