GPT-5.6 Luna vs gpt-4o-image
| OpenAI GPT-5.6 Luna | OpenAI gpt-4o-image | |
|---|---|---|
| Vendor | OpenAI | OpenAI |
| Context window | 1,050,000 | — |
| Max output | 128,000 | — |
| Reasoning | Yes | No |
| Tool calling | Yes | No |
| File input | Yes | No |
| Input | text, image | text |
| Output | text | image, text |
| Released | 2026-07-08 | — |