Compare models
Prices, specs and price history side by side. Data as of 2026-08-02
| Spec | GPT-5.6 Terra ProOpenAI | GPT-5.6 LunaOpenAI |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Context window | 1.1M | 1.1M |
| Max output | 128K | 128K |
| Modalities | file, image, text → text | file, image, text → text |
| Open source | No | No |
| License | - | - |
| Released | - | - |
| Status | active | active |
| Input$ / 1M | 2.5 | 1cheapest |
| Output$ / 1M | 15 | 6cheapest |
| Cached$ / 1M | 0.25 | 0.1cheapest |
| Channel | openrouter | openrouter |
Price history
Overlaid price history. Solid = verified by us, dashed = estimated (archive).
GPT-5.6 Terra ProGPT-5.6 Lunaverified by usestimated (archive)