OpenAI launches GPT 6 Sol and Luna with Astra-level AI at lower cost, check details
digit.in Sep 23, 2026

OpenAI launches GPT 6 Sol and Luna with Astra-level AI at lower cost, check details

AI-summarised brief · reviewed before publication

OpenAI announced the addition of two models, GPT‑6 Sol and GPT‑6 Luna, to its GPT‑6 lineup. Both models are now accessible through ChatGPT Work and Codex for Plus, Pro, Business, Enterprise and Edu tiers. OpenAI also reduced API pricing for the new models by 50 percent relative to the promotional rates of GPT‑5.6. GPT‑6 Sol targets demanding professional workflows and coding tasks, reportedly outperforming Claude Opus 5 on AutomationBench while costing only 9 percent of the competitor per task, and achieving a 68.8 percent score on DeepSWE v1.1—about 80 percent cheaper per task than Claude Fable 5. GPT‑6 Luna is positioned for large‑scale production use. The launch aims to broaden the reach of Astra‑level AI by delivering higher cost efficiency.

💡 Why It Matters

  • · By slashing costs while boosting performance, OpenAI is poised to accelerate AI adoption in enterprise and developer ecosystems that previously balked at premium pricing.