OpenAI Expands GPT-6 Lineup with Cheaper Sol and Luna Models
OpenAI says the updated models cut API prices by half or more and improve factual accuracy and coding performance.
- 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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Channel News Asia
OpenAI expands GPT-6 lineup with cheaper Sol and Luna models
Sept 22 : OpenAI on Tuesday expanded its GPT-6 AI lineup with two models priced at half the promotional rates of their predecessors, while offering some of the capabilities of its flagship Astra.The launch of low-cost GPT-6 Sol and GPT-6 Luna follows the rollout of GPT-6 Astra, a faster model for handling mor
OpenAI Announces Cheaper GPT-6 Family Models
OpenAI on Tuesday announced GPT-6 Sol and GPT-6 Luna, which it describes as cheaper and faster models in the GPT-6 Astra family. The company said that the new models show significant improvements compared to their predecessors, GPT-5.6 Sol and GPT-5.6 Luna, in areas like professional work, coding, computer use and accuracy. Additionally, OpenAI said that it had been able to make
OpenAI launched GPT-6 Sol only a few minutes after Anthropic introduced Claude Opus 5.5. Two rival models unveiled on the same day, in the same handkerchief.
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