OpenAI · current

GPT-5.6 Luna API pricing

Cost-sensitive GPT-5.6 tier for high-volume general and agentic work.

Input / million
$1.00
Cached input / million
Not recorded
Output / million
$6.00
Context window
1,050,000

Example cost

A request with 10,000 input tokens and 2,000 output tokens costs approximately $0.0220 at the recorded standard rate.

  • 10,000 standard input tokens / 1,000,000 × $1
  • 0 cached tokens / 1,000,000 × $1
  • 2,000 output tokens / 1,000,000 × $6

Pricing rules and limitations

Official list rate; undocumented cache and special tiers are omitted from calculations.

Price history

EffectiveUntilInputOutputStatus
2026-03-01Current / scheduled$1.00$6.00current