Introducing GPT-6 Sol and Luna
While the most demanding and important projects still call for Astra’s full depth, work happens at different scales, rhythms, and budgets.That’s why we’re expanding the GPT‑6 universe with GPT‑6 Sol and GPT‑6 Luna. GPT‑6 Astra introduced a new generation of intelligence—these models help distribute the benefits of that intelligence by advancing the frontier on cost efficiency. Improvements in caching and inference let us serve these models at lower cost, and we’re passing those savings directly on to users and customers by reducing API prices for Sol and Luna by 50% compared with their GPT‑5.6 promotional pricing.
- ▪While the most demanding and important projects still call for Astra’s full depth, work happens at different scales, rhythms, and budgets.That’s why we’re expanding the GPT‑6 universe with GPT‑6 Sol and GPT‑6 Luna.
- ▪GPT‑6 Astra introduced a new generation of intelligence—these models help distribute the benefits of that intelligence by advancing the frontier on cost efficiency.
- ▪Improvements in caching and inference let us serve these models at lower cost, and we’re passing those savings directly on to users and customers by reducing API prices for Sol and Luna by 50% compared with their GPT‑5.6 promotional pricing
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Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | OpenAI Blog |
| Canonical URL | https://openai.com/index/introducing-gpt-6-sol-and-luna |
| Publication time | Tue, 22 Sep 2026 18:00:00 GMT |
| Retrieval time | 2026-09-22T19:08:57.509Z |
| Last seen | 2026-09-22T19:08:57.509Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | 5Ily0uxwVuBZ · 4 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Introducing GPT‑6 Sol and LunaMore ways to bring frontier intelligence into the work you do every day.Loading…ShareGPT‑6 API pricingGPT‑6 API pricingA step up across the model familyProfessional workFactualityCodingComputer useCollaboration styleImproving caching for agents and long conversationsContinuing to improve alignmentAvailabilityGPT‑6 API pricingA step up across the model familyProfessional workFactualityCodingComputer useCollaboration styleImproving caching for agents and long conversationsContinuing to improve alignmentAvailabilityEarlier this month, we introduced GPT‑6 Astra, the most intelligent and aligned model in the world.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at OpenAI Blog.
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