Models › OpenAI
gpt-5.5 API pricing
$5.00 per 1M input tokens and $30.00 per 1M output tokens (prompts up to 272K tokens). Verified 2026-11-01 against the official price list.
Current prices
| Mode | Input | Output | Cache read |
|---|---|---|---|
| Standardprompts ≤ 272K tokens | $5.00 | $30.00 | $0.50 |
| Standardprompts > 272K tokens | $10.00 | $45.00 | $1.00 |
| Batch APIprompts ≤ 272K tokens | $2.50 | $15.00 | $0.25 |
| Batch APIprompts > 272K tokens | $5.00 | $22.50 | $0.50 |
| Flexprompts ≤ 272K tokens | $2.50 | $15.00 | $0.25 |
| Flexprompts > 272K tokens | $5.00 | $22.50 | $0.50 |
| Fast modeprompts ≤ 272K tokens | $12.50 | $75.00 | $1.25 |
USD per 1M tokens.
Price history
No price change observed since tracking started on 2025-10-25.
Source
- https://developers.openai.com/api/docs/pricing — official OpenAI price list, last verified 2026-11-01