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Anthropic and OpenAI roll out cheaper models in first release since call for slowdown
Tuesday, September 22, 2026
OpenAI introduced GPT-6 Sol and GPT-6 Luna, while Anthropic unveiled Claude Opus 5.5. Both companies released the models without providing detailed technical specifications or pricing information at the time of announcement. The releases marked the first model updates from each company following public statements from AI researchers calling for a slowdown in large-scale AI development.
Original reporting: https://www.cnbc.com/2026/09/22/anthropic-openai-cheaper-ai-models.html