OpenAI reduced prices for two GPT-5.6 models citing improved system efficiencies. The company cut the price of its entry-level Luna model by approximately 80%. The mid-tier Terra model is now 20% cheaper. Pricing for the flagship Sol model remains unchanged.
The reductions occur just weeks after the GPT-5.6 family reached general availability. OpenAI implemented the cuts to address enterprise cost scrutiny and rising market competition. This strategy pressures rivals Anthropic and Google to adjust pricing for comparable models. Lower costs increase accessibility for high-volume tasks and may accelerate broad AI adoption.