GPT-5.4 Mini vs gpt-4-gizmo-*
| OpenAI GPT-5.4 Mini | OpenAI gpt-4-gizmo-* | |
|---|---|---|
| Vendor | OpenAI | OpenAI |
| Context window | 400,000 | — |
| Max output | 128,000 | — |
| Reasoning | Yes | No |
| Tool calling | Yes | No |
| File input | Yes | No |
| Input | text, image | text, image |
| Output | text | text |
| Released | 2026-03-16 | — |