gpt-3.5-turbo-16k vs GPT-5.6 Luna
| OpenAI gpt-3.5-turbo-16k | OpenAI GPT-5.6 Luna | |
|---|---|---|
| Vendor | OpenAI | OpenAI |
| Context window | 16,385 | 1,050,000 |
| Max output | 4,096 | 128,000 |
| Reasoning | No | Yes |
| Tool calling | Yes | Yes |
| File input | No | Yes |
| Input | text | text, image |
| Output | text | text |
| Released | — | 2026-07-08 |