The September 22, 2026 releases of GPT-6 Sol, Luna, and Claude Opus 5.5 are the first from OpenAI and Anthropic since their respective CEOs called for an industrywide slowdown on advanced AI development

From the articleAnthropic and OpenAI roll out cheaper models in first release since call for slowdownAlso in Anthropic releases Opus 5.5 with lower prices and Fable-level performance, What AI slowdown? OpenAI, Anthropic release dueling models as price wars heat up | Fortune
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