gpt-5.6-luna
A OpenAI model. Every figure below was read off OpenAI's own pricing page and stamped with the date it was read — last pass 2026-08-04. Nothing here is estimated.
| Input / 1M tokens | $0.2 |
| Output / 1M tokens | $1.2 |
| Cached input / 1M | $0.02 |
repriced -80% — was $1/$6 in the 2026-07-29 snapshot; vendor page reads $0.20/$1.20 on 2026-08-04. Every ratio derived from luna changed ~5x
long-context tier: $0.40 in / $1.80 out / $0.04 cached
Price is only one decision input. Runtime performance requires reproducible measurement; the benchmark protocol explains what is measured and clearly marks results that are still pending. See every OpenAI model on its provider page.