function_callingSmallest GPT-5.6 variant, optimized for cost and speed; Agentic and reasoning capabilities; Fast mode is available at 2x pricing; Cache writes are billed at 1.25x the uncached input rate
| Provider | Input | Output | Since launch |
|---|---|---|---|
| OpenRoutercheapest | $0.1 | $0.6 | ↓90% |
| Cursor | $0.2 | $1.2 | — |
| OpenAI | $0.2 | $1.2 | ↓80% |
| Perplexity | $0.2 | $1.2 | ↓80% |
| Vercel AI Gateway | $0.2 | $1.2 | ↓80% |
| Model | Context | Max out | Pricing |
|---|---|---|---|
| GPT-5.6 Luna | 272K | 128K | $0.2$1.2 |
| GPT-5.6 Terra | 272K | 128K | $2$12 |
| GPT-5.6 Sol | 272K | 128K | $5$30 |
/v1/models/cursor/gpt-5.6-luna