OpenAI released GPT-6 Sol and GPT-6 Luna at half the price of their GPT-5.6 equivalents, with GPT-6 Luna at $0.10/$0.50 per million tokens. Anthropic's Claude Opus 5.5 received a 20% price cut to $4/$20 per million tokens, plus a 60% reduction in cache read pricing. However, Opus 5.5 at "max" thinking failed the author's pelican SVG test, hitting its 128,000 output token limit while reasoning.
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