Model Price Index
Updated 2026-08-04 · Changelog

GPT-5.6 Luna

OpenAI

Cost-efficient GPT-5.6-class model for high-volume, latency-sensitive tasks

$0.20

Input

$1.20

Output

per 1M tokens
272K input tokens

Above 272K input tokens per request: $0.40 in / $1.80 out. Cache and batch rates step at the same bracket.

Ratesper 1M tokens

GPT-5.6 Luna pricing by input token bracket
Rate≤272K>272K
Standard Input$0.20$0.40
Standard Output$1.20$1.80
Cache Read$0.02$0.04
Cache Write$0.25$0.50
Batch Input$0.10$0.20
Batch Output$0.60$0.90

Bracket is selected by input tokens per request.

Estimate Your Monthly Cost

A request with input and output tokens, requests / month at a % cache hit rate $38.00/mo≤272K rate

Compare all models at this workload →

Per-request input tokens select the bracket. Excludes cache writes and batch discounts.

Specifications

API Model IDgpt-5.6-luna
Context Window1.05M tokens

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