OpenAI launches faster, cheaper GPT-6 Sol and Luna
OpenAI is positioning Sol and Luna as the cheaper GPT-6 workhorses below Astra.
Sol and Luna bring GPT-6 improvements to faster, lower-cost models for professional work, coding and agentic tasks. OpenAI says API prices are down 50% versus GPT-5.6 promotional pricing, with Luna far cheaper than Sol per token. The piece cites benchmark gains for Sol in automation, agents and coding, while noting Astra still leads OpenAI’s computer-use lineup. Prompt caching is a major part of the rollout, with 90% discounts on cached input reads and new diagnostics for developers. TestingCatalog's note
Sol and Luna bring GPT-6 improvements to faster, lower-cost models for professional work, coding and agentic tasks. OpenAI says API prices are down 50% versus GPT-5.6 promotional pricing, with Luna far cheaper than Sol per token. The piece cites benchmark gains for Sol in automation, agents and coding, while noting Astra still leads OpenAI’s computer-use lineup. Prompt caching is a major part of the rollout, with 90% discounts on cached input reads and new diagnostics for developers. TestingCatalog's note
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