OpenAI · current

GPT-5.6 Sol API pricing

OpenAI frontier reasoning and coding model for complex professional workloads.

Input / million
$5.00
Cached input / million
$0.5000
Output / million
$30.00
Context window
1,050,000

Example cost

A request with 10,000 input tokens and 2,000 output tokens costs approximately $0.1100 at the recorded standard rate.

  • 10,000 standard input tokens / 1,000,000 × $5
  • 0 cached tokens / 1,000,000 × $0.5
  • 2,000 output tokens / 1,000,000 × $30

Pricing rules and limitations

Prompts above 272K input tokens use 2x input and 1.5x output for the full request; cache writes are 1.25x input.

Price history

EffectiveUntilInputOutputStatus
2026-03-01Current / scheduled$5.00$30.00current