# Please welcome GPT\-6 Sol and GPT\-6 Luna to the GPT\-6 universe

[Reference page](https://posts.design/openai-please-welcome-gpt-6-sol-and-gpt-2026-09-22) · [Markdown](https://posts.design/openai-please-welcome-gpt-6-sol-and-gpt-2026-09-22.md) · [Original source](https://x.com/openai/status/2102460975790137662)

Please welcome GPT\-6 Sol and GPT\-6 Luna to the GPT\-6 universe\.

GPT\-6 Sol and Luna build on the advances behind GPT\-6 Astra, bringing much of its strengths into faster and more affordable models to support work at scale\.

We’ve also made caching and inference more efficient, and

- Kind: post
- Media: video
- Posting account: OpenAI · @OpenAI
- Account: [OpenAI](https://x.com/OpenAI)
- Represented brand: OpenAI
- Categories: Launch
- Subjects: AI
- Source published: 2026\-09\-22T18:12:13\.000Z
- Captured: 2026\-09\-22
- Added to posts.design: 2026\-09\-22T18:40:44\.548Z
- Recorded views: 10156983 · captured 2026\-10\-12T15:53:02\.034Z · refresh\-observed\-public

![OpenAI: Please welcome GPT\-6 Sol and GPT\-6 Luna to the GPT\-6 universe — public x\-twitter post media curated for social post design inspiration\.](https://posts.design/images/posts/x-twitter-openai-2102460975790137662-openai-please-welcome-gpt-6-sol.webp)

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