OpenAI Launches Cheaper GPT-6 Sol and Luna Models

OpenAI has expanded its GPT-6 artificial intelligence lineup with two lower-cost models priced at half the promotional rates of their predecessors. The new Sol and Luna models are designed to offer affordable options for professional work, coding, and automation tasks.

People visit an OpenAI booth at Moscone Center during the Dreamforce 2026 technology summit in San Francisco, California, US, September 17, 2026. REUTERS/Carlos Barria

OpenAI expanded its GPT-6 lineup on Tuesday by launching two lower-cost models priced at half their predecessors' promotional rates. The release follows the rollout of its flagship Astra model earlier in the month. The expansion targets cost reductions as AI firms face mounting pressure over operational expenses.

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