OpenAI Expands GPT-6 Series with Sol and Luna Models
OpenAI is expanding its GPT-6 family with two new API models, Sol and Luna. The new models halve token prices compared to the GPT-5.6 generation.
What happened?
OpenAI has expanded its GPT-6 series with two new AI models, GPT-6 Sol and GPT-6 Luna. Sol is priced at $2 per million input tokens, while Luna is priced at $0.10 per million input tokens. This represents a 50 percent price reduction compared to the predecessor, GPT-5.6. The launch complements the flagship model, GPT-6 Astra, which was introduced earlier in September 2026.
Key facts
| Pris GPT-6 Sol | 2 USD / miljon indatatoken |
|---|---|
| Pris GPT-6 Luna | 0,10 USD / miljon indatatoken |
| Prissänkning jmf med GPT-5.6 | 50 % lägre API-priser |
| Lanseringsdatum | 23 september 2026 |
Why it matters
One of the greatest obstacles to widespread AI integration in production has been high computation and token costs. By halving API prices compared to the GPT-5.6 generation, OpenAI is making it economically viable to run continuous background processes, data analytics, and chat interfaces at scale without exceeding hardware or API budgets.
Who is affected?
The models are aimed at developers and enterprises building large-scale AI applications where token costs are a critical factor. Sol is tailored for more demanding professional applications, while Luna is aimed at volume-based data processing and simpler automations.
Impact on the EU
The models have been released globally via OpenAI's API and are immediately available to developers and companies within the EU. Existing data protection regulations and the AI Act apply to their implementation.
What else you should know
The launch of Sol and Luna comes shortly after the presentation of OpenAI's flagship model, GPT-6 Astra, earlier in September 2026. By offering multiple size and price tiers within the GPT-6 family, the company covers everything from advanced reasoning tasks to volume-intensive data processing.
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