Analysis • OpenAI • GPT-6 • September 27, 2026

GPT-6 Sol and GPT-6 Luna – OpenAI didn't just boost intelligence.

They changed the economics of AI GPT-6 Sol and GPT-6 Luna are two new models from OpenAI designed to move the capabilities of GPT-6 generation from the most expensive frontier model segment into everyday work and mass deployments.

Benchmarks, however, tell a more interesting story than marketing: Sol does not beat GPT-6 Astra or Claude Opus 5.5 in terms of general intelligence.

Luna is even weaker.

Nevertheless, these two models may have a greater impact on real AI implementations than another benchmark record.

The reason is simple – price.

Data status: September 27, 2026 .

In this article, we deliberately separate benchmarks published by OpenAI from independent measurements by Artificial Analysis.