Gemini 3.1 Flash-Lite vs GPT-5.3 Codex
| Google Gemini 3.1 Flash-Lite | OpenAI GPT-5.3 Codex | |
|---|---|---|
| Vendor | OpenAI | |
| Context window | 1,048,576 | 400,000 |
| Max output | 65,536 | 128,000 |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image, audio, video, file | text, image, file |
| Output | text | text |
| Released | 2026-03-02 | 2026-02-05 |