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GPT-5.6 API prices drop up to 80%, and Sol gains a Fast mode
OpenAI cut GPT-5.6 Luna token prices by 80% and Terra's by 20% in the API. Intelligence that was frontier-class a year ago now costs about six cents on the dollar per task at nearly nine times the speed, with gains spanning the model, inference stack, and agentic harness.
What changed
A Fast mode also arrives for GPT-5.6 Sol, offering up to 2.5 times Standard speed at twice the Standard price with no change in intelligence.
Why it matters for advertisers
For you, this means high-volume agentic work gets dramatically cheaper while latency-sensitive work gets a paid fast lane, so re-run the economics on automations you previously shelved.
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GPT-5.6 API prices drop up to 80%, and Sol gains a Fast mode
OpenAI cut GPT-5.6 Luna token prices by 80% and Terra's by 20% in the API. Intelligence that was frontier-class a year ago now costs about six cents on the dollar per task at nearly nine times the speed, with gains spanning the model, inference stack, and agentic harness. A Fast mode also arrives for GPT-5.6 Sol, offering up to 2.5 times Standard speed at twice the Standard price with no change in intelligence. For you, this means high-volume agentic work gets dramatically cheaper while latency-sensitive work gets a paid fast lane, so re-run the economics on automations you previously shelved.
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