OpenAI · LLM API Modelactive

gpt-6-luna

gpt-6-luna costs $0.10 per 1M input tokens, $0.01 cached input and $0.50 per 1M output tokens. Batch API: $0.05 input, $0.25 output.

Updated September 28, 2026
Input / 1M
$0.10
Output / 1M
$0.50
Cached Input
$0.01
Context Window
922K
Standard Input
$0.10 / 1M
Base prompt input rate
Standard Output
$0.50 / 1M
Completion output rate
Prompt Caching -50%
$0.01 / 1M
Cached prompt context
Batch API -50%
$0.05 / 1M
Asynchronous 24h batch

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All rates listed in USD per 1 Million (1M) tokens unless noted

StandardBatchFlexFast mode
Pricing Metric / Parameter
Standard RATE
(per 1M)
Batch RATE
(per 1M)
Flex RATE
(per 1M)
Fast mode RATE
(per 1M)
Short context input$0.10$0.05$0.05$0.20
Short context cached input$0.01$0.005$0.005$0.02
Short context cache writes$0.125$0.0625$0.0625$0.25
Short context output$0.50$0.25$0.25$1.00
Long context input$0.20$0.10$0.10$0.40
Long context cached input$0.02$0.01$0.01$0.04
Long context cache writes$0.25$0.125$0.125$0.50
Long context output$0.75$0.375$0.375$1.50

Source: OpenAI official pricing page, verified 2026-09-28. Prices in USD per 1M tokens.

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