Compare models
Prices, specs and price history side by side. Data as of 2026-08-02
| Spec | GPT-5.6 Luna ProOpenAI | gpt-oss-20bOpenAI |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Context window | 1.1M | 131K |
| Max output | 128K | 131K |
| Modalities | file, image, text → text | text → text |
| Open source | No | No |
| License | - | - |
| Released | - | - |
| Status | active | active |
| Input$ / 1M | 1 | 0.03cheapest |
| Output$ / 1M | 6 | 0.13cheapest |
| Cached$ / 1M | 0.1 | 0.03cheapest |
| Channel | openrouter | openrouter |
Price history
Overlaid price history. Solid = verified by us, dashed = estimated (archive).
GPT-5.6 Luna Progpt-oss-20bverified by usestimated (archive)