Models / openai
gpt-5.6-luna pricing
Input
$1
per 1M tokens
Output
$6
per 1M tokens
100k calls / month*
$300.00
*1,200 in / 300 out avg tokens
provider list price · as of 2026-07-28 · source: the same table ReasonRank uses in production
How much does gpt-5.6-luna cost per million tokens?
gpt-5.6-luna costs $1 per million input tokens and $6 per million output tokens (list price, as of 2026-07-28).
What does gpt-5.6-luna cost at 100k calls a month?
At 100,000 calls/month averaging 1,200 input and 300 output tokens, gpt-5.6-luna costs about $300.00/month at list prices.
Is a cheaper model good enough to replace gpt-5.6-luna?
Price tables can’t answer that — it depends on your workload. ReasonRank tests candidate models on your own cases with a statistical non-inferiority gate, then verifies savings on live traffic.
Wondering if gpt-5.6-luna is over- or under-powered for your workload? Estimate with the free calculator, see what a verified switch decision looks like, or test it on your own cases — ReasonRank verifies the answer with a statistical gate, for cents.