OpenAI cuts GPT-5.6 Luna API prices by 80%, Terra by 20%

OpenAI has reduced API pricing for its GPT-5.6 Luna and Terra models: Luna is now 80% cheaper at $0.20 per million input tokens and $1.20 per million output tokens, while Terra dropped 20% to $2 and $12 respectively. The changes are rolling out, including on AWS, and both models now consume fewer credits.

• Luna: $0.20 per million input tokens, $1.20 per million output
• Terra: $2 per million input tokens, $12 per million output
• New pricing is rolling out, including on AWS
• Sol Fast mode is up to 2.5x faster at twice the price