GPT-5.6 Luna
by OpenAI · gpt-luna family · released 2026-07-09
On output pricing, GPT-5.6 Luna is cheaper than 408 of the 642 priced models tracked here, at $1.2/Mtok. Its 1,050,000-token context window is larger than 727 of 741 models. Capabilities: vision, tools, reasoning, structured output.
Specifications
| Provider | OpenAI |
| Family | gpt-luna |
| Input price | $0.2/Mtok |
| Output price | $1.2/Mtok |
| Cache read price | $0.02/Mtok |
| Cache write price | $0.25/Mtok |
| Context window | 1,050,000 |
| Max output tokens | 128,000 |
| Input modalities | text, image, pdf |
| Output modalities | text |
| Capabilities | vision, tools, reasoning, structured output |
| Knowledge cutoff | 2026-02-16 |
| Released | 2026-07-09 |
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