GPT 5.6 Luna

Details

GPT 5.6 Luna is an efficient, high-volume version of GPT-5.6 — fast and cost-effective for everyday tasks, now with the same 1M context window as the rest of the 5.6 generation.

Context window

1.05M tokens

Max output

128K tokens

Knowledge cutoff

February 16, 2026

Provider

OpenAI GPT

Pricing

Free

PDF support

Yes

Zero Data Retention

Yes

Added

July 10, 2026