OpenAI · small
OpenAI GPT-5.6 Luna: API pricing 2026
Cheapest GPT-5.6 tier at $1/$6. Suitable for classification, routing, and simple extraction where the flagship's reasoning depth isn't needed.
Input $/M tokens
$1.00
Output $/M tokens
$6.00
Cost / task
$0.0090
3k in + 1k out
Tier
small
OpenAI
Cost at common task volumes
| 1,000 tasks / yr | $9.00 |
| 10,000 tasks / yr | $90.00 |
| 100,000 tasks / yr | $900 |
| 1,000,000 tasks / yr | $9,000 |
Token shape: 3,000 input + 1,000 output per task. No prompt caching. Real cost varies with your actual prompt shape.
Source
↗ https://openai.com/api/pricingVerified 2026-07-17.
Compare with other LLMs