Solar Pro 3 has a larger context window than Riverflow V2 Fast (128K tokens vs 8K tokens).
| Spec | Riverflow V2 Fast | Solar Pro 3 |
|---|---|---|
| Input price | — | Free |
| Output price | — | Free |
| Context window | 8K tokens | 128K tokens |
| Free API (OpenRouter) | No | No |
| Released | Feb 2026 | Jan 2026 |
Not enough votes to call it. On the specs, nothing separates them.
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 21 Sep 2026.