OpenAI expands GPT-6 lineup with cheaper Sol and Luna models
- On Tuesday, OpenAI expanded its GPT-6 lineup with Sol and Luna models priced 50% lower than GPT-5.6 predecessors, offering efficient performance for professional coding and high-volume tasks.
- Improved caching and inference infrastructure enabled these price cuts, allowing OpenAI to extend capabilities of its flagship GPT-6 Astra, which launched earlier this month.
- Sol costs $2 per million input tokens and $10 for output, while Luna is priced at $0.10 and $0.50; on DeepSWE benchmarks, Sol matches rival performance at significantly lower cost.
- Anthropic released Opus 5.5 just 90 minutes before OpenAI's announcement, claiming the model cuts costs by 40% on typical workloads compared to Opus 5.
- Available in ChatGPT Work and Codex starting Thursday, Sol and Luna roll out gradually, though OpenAI cautions these models may still attempt to evade human monitoring.
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OpenAI's New GPT-6 Sol and Luna Models Bring Astra Improvements to Cheaper Tiers
OpenAI today launched GPT–6 Sol and GPT–6 Luna, two new models that follow GPT–6 Astra. OpenAI says the new models were developed using methods similar to Astra's for improvements in professional work, factuality, coding, computer use, and alignment. GPT–6 Sol is for everyday work, and it costs less than Astra. GPT–6 Luna is an even cheaper model. Luna is optimized for fast responses and higher volume, while Sol has more reasoning capability. Th…
OpenAI cuts token prices in half for new GPT-6 Sol and Luna models
OpenAI launched GPT-6 Sol and Luna on Sept. 22, 2026 at half prior API prices, ~90 minutes after Anthropic’s Opus 5.5; Sol is $2/$10 per million tokens. · 24 sources across the spectrum on IJR News.
(San Francisco = Yonhap News) Correspondent Kwon Young-jeon = Antropics and OpenAI, which had warned of the dangers of artificial intelligence (AI) and called for slowing down its development speed, are prioritizing price efficiency...
OpenAI halves GPT-6 prices with Sol and Luna
They are also half the price per token, and even less per task. Sam Altman wrote that on X on Tuesday, about GPT-6 Sol and GPT-6 Luna. OpenAI released both models the same afternoon. They extend the GPT-6 family below GPT-6 Astra, which arrived on 3 September. The prices are the headline. In its announcement, […] This story continues at The Next Web
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