OpenAI: GPT-5.6 Luna (batch)
GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for...
Everything else
| Max output | 128K |
|---|---|
| Input / 1M | $0.1 |
| Output / 1M | $0.6 |
| Cache read / 1M | $0.01 |
| Cache write / 1M | — |
| 1M in + 1M out | $0.7 |
| Takes | file, image, text |
| Returns | text |
| Tools | yes |
| Reasoning | optional · max, xhigh, high, medium, low, none |
| Open weights | no |
| Released | 2026-07-09 |
| Knowledge cutoff | 2026-02-16 |
| Retires | — |
| Catalog id | openai/gpt-5.6-luna:batch |
Using it
In 00, this model is picked per agent — and per tier, so the model that answers your customers need not be the one that writes your code. Get 00.