A short post from @Conor_D_Dart speculates that future models could be named GPT-6 Sol, GPT-6 Terra and GPT-6 Luna, with GPT-5.6 Luna also mentioned as a model to watch. The post presents these names as an expectation, not as a detailed product announcement.

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What the post says

The prediction contains two related ideas: a future GPT-6 series using the names Sol, Terra and Luna, and a possible GPT-5.6 Luna release. It does not explain what the names represent, when any of the models might appear, or what capabilities they would have.

That makes the naming itself the only concrete subject of the post. Readers should treat the model names as speculation rather than confirmed roadmap details. Nothing in the post establishes a release date, technical specification or official availability.

For a specific Astra capability beyond unconfirmed naming, see Astra’s searchable Codex context.