OpenAI Slashes GPT-5.6 Model Prices and Adds Fast Mode
shensi · x · 2026-07-31
OpenAI has announced major price cuts across its GPT-5.6 model family and introduced a new inference mode.
- GPT-5.6 Luna: API prices have been slashed by 80%, now costing $0.20 per million input tokens and $1.20 per million output tokens.
- GPT-5.6 Terra: Prices reduced by 20%, with input and output prices adjusted to $2 and $12, respectively.
- GPT-5.6 Sol: Introduced a new Fast mode in the API, offering up to 2.5x the speed for 2x the price while maintaining the same level of intelligence.
Related event: OpenAI launches GPT-5.6 family: Luna price cut 80%, Sol gets Fast mode(67 posts)→
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