openai shipping tiered reasoning at 25x cost spread. the real benchmark is not the top score, it's the cheapest token that can run a 10 step agent loop. that number just dropped hard.
GPT-5.6 is a major step forward for health intelligence.
Across the lineup, we’re delivering stronger performance at lower cost: GPT-5.6 Luna outperforms GPT-5.5 at its highest reasoning setting while costing 25x less.
Together, these advances raise quality while making advanced models accessible to more people globally.
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