GPT-5.6 Luna

gpt-5.6-luna · OpenAI · Codex

Input
$0.20
per million tokens
Output
$1.20
per million tokens
Blended
$0.45
input weighted 3:1 over output, because a coding agent reads far more than it writes

Plans that include it

PlanPriceMax possible spend
OpenAI ChatGPT Go $8/mo not measured
OpenAI ChatGPT Plus $20/mo not measured
OpenAI ChatGPT Pro $100/mo not measured

Checked 2026-08-20. JSON: /api/models/gpt-5.6-luna