# GPT-6 Luna — price & specs

Source: https://modelbank.ai/models/gpt-6-luna · updated 2026-11-12 · ModelBank

| Field | Value |
|---|---|
| Vendor | OpenAI |
| Input price | $0.1 / 1M tokens |
| Output price | $0.5 / 1M tokens |
| Cached input | $0.01 / 1M tokens |
| Context window | 1,050,000 tokens |
| Max output | 128,000 tokens |
| Input modalities | file,image,text |
| Reasoning / tool use | yes / yes |
| Intelligence / coding index | 27.9 / — |
| Released | 2026-09-22 |
| Retirement date | none announced |

## About

GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol. It is suited for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic...

## Price history

- 2026-09-24: $0.1 in / $0.5 out

## Cheaper alternatives with similar intelligence

- [GLM 5.3 Flash](https://modelbank.ai/models/glm-5.3-flash): $0.0399 / $0.0784, intelligence 27.8
- [DeepSeek V4.1 Flash 1017](https://modelbank.ai/models/deepseek-v4.1-flash-1017): $0.098 / $0.29, intelligence 28.6
- [MiMo-V2.6-Flash](https://modelbank.ai/models/mimo-v2.6-flash): $0.14 / $0.28, intelligence 26.7

JSON: https://modelbank.ai/api/v1/models/gpt-6-luna