OpenAI and Anthropic Launch New Models on Same Day: GPT-6 Sol/Luna vs. Claude Opus 5.5

OpenAI released GPT-6 Sol and GPT-6 Luna, built on the GPT-6 Astra foundation, with API prices cut by 50% compared to GPT-5.6. Anthropic launched Claude Opus 5.5, reducing costs by about 40% and increasing output speed by over 30%. The simultaneous releases highlight intensifying competition in performance and cost-efficiency, with OpenAI emphasizing democratizing AI access.

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