GPT-5.4 Nano vs DeepSeek V4.1 Flash
| OpenAI GPT-5.4 Nano | DeepSeek DeepSeek V4.1 Flash | |
|---|---|---|
| Vendor | OpenAI | DeepSeek |
| Context window | 400,000 | 1,040,000 |
| Max output | 128,000 | 384,000 |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image | text |
| Output | text | text |
| Released | 2026-03-17 | 2026-09-10 |