Head to head
GPT-5.6 Luna vs GPT-5.4
On a blended workload of one million input tokens and three million output tokens, GPT-5.6 Luna is 12.5× cheaper than GPT-5.4.
| GPT-5.6 Luna | GPT-5.4 | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input / MTok | $0.2 | $2.5 |
| Output / MTok | $1.2 | $15 |
| Cache read / MTok | $0.02 | $0.25 |
| Context window | — | — |
| Blended 1M in + 3M out | $3.80 | $47.50 |
| Status | ga | ga |