Upstage models
We track 5 Upstage models. The most recent release is Solar Mini 4, released 23 Sept 2026.
| Model | Released | Context | Input $/1M | Output $/1M | Weights |
|---|---|---|---|---|---|
| Solar Mini 4 | 23 Sept 2026 | 524K | $0.05 | $0.20 | – |
| Solar Pro 4 | 6 Aug 2026 | 524K | $0.09 | $0.36 | Closed |
| solar-pro3 | Jan 2026 | 131K | $0.15 | $0.25 | Closed |
| solar-pro2 | 20 May 2025 | 66K | $0.25 | $0.25 | Closed |
| solar-mini | 12 Jun 2024 | 33K | $0.15 | $0.15 | Closed |