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OpenAI

Is GPT-6 Luna out? Yes, since September 22, 2026

Yes. GPT-6 Luna was released on September 22, 2026.

A browser notification for each confirmed release in this family. No account or email.

Have you used it? GPT-6 Luna

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Lab
OpenAI
Family
GPT
Release date
Source
OpenAI · GPT-6 Sol & Luna

What changed

  • context 1.05M tokens · Context window of GPT-6 Luna. GPT-6 Astra is the previous model of the same tier, but the gap is beyond what a percentage explains.
  • price -99 % · Prompt price compared with GPT-6 Astra, same tier in this family. Went from $10.00 / MTok to $0.100 / MTok. Lower is better.

About GPT-6 Luna

GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol. It is suited for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic...

Next GPT model to watch

Questions

When was GPT-6 Luna released?
GPT-6 Luna was released on September 22, 2026.
Who makes GPT-6 Luna?
GPT-6 Luna is made by OpenAI.
What comes after GPT-6 Luna?
GPT-6 Sol, released on September 22, 2026.