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GPT 5.6 Luna

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GPTtext

Also included in OpenAI ChatGPT Plus · OpenAI ChatGPT Pro (5x) · OpenAI ChatGPT Pro (20x) · OpenAI ChatGPT Business. Compare those subscriptions

Pricing
Input PriceOutput PriceCached Input
≤272K$0.2$1.2$0.02
>272K$0.4$1.8$0.04

per 1M tokens · USD

View official pricing
Capabilities
Context
Max Output
Tools
Batch
Caching

Price History

FieldOldNewChangeDate
cached_write_price_per_million$2.5$0.5-80.0%2026-07-31
output_price_per_million$9$1.8-80.0%2026-07-31
cached_input_price_per_million$0.2$0.04-80.0%2026-07-31
input_price_per_million$2$0.4-80.0%2026-07-31
cached_write_price_per_million$1.25$0.25-80.0%2026-07-31
output_price_per_million$6$1.2-80.0%2026-07-31
cached_input_price_per_million$0.1$0.02-80.0%2026-07-31
input_price_per_million$1$0.2-80.0%2026-07-31