Advancing the price-performance frontier with GPT-5.6
OpenAI is reducing the cost of GPT‑5.6 Luna and Terra models, with Luna now costing 80% less and Terra 20% less, to enhance efficiency and performance per dollar. Luna, the fastest and most affordable model, is optimized for high-volume work, while Terra balances cost and quality, offering 60% less time at half the price. These improvements allow businesses to complete more useful work with the same compute, reducing time, tokens, and cost per result. The GPT‑5.6 series expands options by enabling businesses to apply the right amount of intelligence at every stage, with Luna delivering performance comparable to frontier-class models at 6 cents per task and nearly nine times the speed.
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