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Select any two models. Input, output, cached, and context rarely move together — the cheaper model on one line isn't always the cheaper one on the next.

Description

GPT-5.6 Luna is OpenAI's lightweight model in the GPT-5.6 series, optimized for speed and efficiency with a 1.05M token context window.

OpenAI's frontier model for complex professional workloads. 1M token context, text + image input, native computer use.

I/O price /1M

$0.1/$0.6

$5.00/$30.00

Input /1M

$0.1

$5.00

Output /1M

$0.6

$30.00

Cached in /1M

$0.01

$0.5

Context

1.05M

Δ input since launch

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Δ output since launch

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Released

Jul 2026

Apr 2026

Status

—

Provider

OpenAI