GPT-5.4 Nano vs GPT Image 1.5
| OpenAI GPT-5.4 Nano | OpenAI GPT Image 1.5 | |
|---|---|---|
| Vendor | OpenAI | OpenAI |
| Context window | 400,000 | 128,000 |
| Max output | 128,000 | — |
| Reasoning | Yes | No |
| Tool calling | Yes | No |
| File input | Yes | Yes |
| Input | text, image | text, image |
| Output | text | image |
| Released | 2026-03-16 | 2025-12-16 |