Upcoming

GPT-6 Luna is upcoming

OpenAI has not announced this name. There is no model ID, price, or release date. Posts on X only guess that GPT-6 is a family, and place Luna in a tier that has not arrived.

Status: Upcoming
Model ID: Unpublished
Price: Unpublished
Shipped flagship: GPT-6 Astra

See the latest on @OpenAI Check the OpenAI release notes

2026-09-06 · X

The post that put Luna in the family

The whole card opens OpenAI’s X account. The leak itself came from a different account, and it is only an inference.

Not confirmed by OpenAI

GPT-6 Astra is the flagship. GPT-6 is described as a model family, so Sol, Terra, and Luna are still to come.

Open @OpenAI for the latest

This paraphrases a September 6, 2026 post from @kimmonismus. It opens with “It appears that,” and it includes neither a model id nor a screenshot. This page did not reopen that post. @kimmonismus

What else was said

A name, and no specification

09-06Unverified
@kimmonismus
Called GPT-6 Astra the flagship and inferred that Sol, Terra, and Luna were still to come. That is a family guess, not a release note.
09-06Relay
@Conor_D_Dart
A separate short post also wrote the names GPT-6 Sol, Terra, and Luna. It gave no date, capability, or price.
09-17Relay
OrcaRouter
Later coverage placed Luna in a tier under the flagship, without a public model id, price, or benchmark. OpenAI’s release notes still list only GPT-6 Astra, shipped on September 3.

What you can check now

Astra has shipped. Luna has not.

OpenAI’s timeline is where the latest public posts show up. GPT-6 Luna exists only if OpenAI writes the name itself.

See the latest on @OpenAI Open the shipped GPT-6 Astra

Still waiting?

Tour the GPT lineup that already ships

GPT-6 Luna is a name without a model ID or price so far. While the announcement waits, look at the shipped GPT-6 flagship and the real Luna already listed.

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