OpenAI API pricing

GPT API models for general-purpose, agentic, and high-throughput workloads.

Official provider site
OpenAI

GPT-5.6 Luna

Verified

OpenAI's fast, economical model for everyday API tasks and large request volumes.

Input
$0.20
Cached
$0.02
Output
$1.20
Open GPT-5.6 Luna cost calculator
OpenAI

GPT-5.6 Sol

Verified

OpenAI's flagship model for demanding agentic tasks, calculated at the standard API processing rate.

Input
$5.00
Cached
$0.50
Output
$30.00
Open GPT-5.6 Sol cost calculator
OpenAI

GPT-5.6 Terra

Verified

OpenAI's balanced model for performance-sensitive, high-throughput production workloads.

Input
$2.00
Cached
$0.20
Output
$12.00
Open GPT-5.6 Terra cost calculator