Anthropic and OpenAI dropped competing model updates within the same hour. Claude Opus 5.5 and GPT-6 Sol and Luna launched simultaneously, and both vendors led with cost reductions.
The timing is not coincidental. This is a direct market pressure move from both sides, and the pricing angle suggests neither company is willing to let the other own the efficiency narrative heading into Q4.
The full article breaks down what Sol and Luna actually differ on, which is the detail that matters most here. Read it to understand whether this is one model split into two SKUs or two genuinely distinct architectures.
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