Solar Pro 4 is cheaper than OpenAI o4-mini at $0.09/M vs $1.1/M input tokens.
| Spec | OpenAI o4-mini | Solar Pro 4 |
|---|---|---|
| Input price | $1.1/M tokens | $0.09/M tokens |
| Output price | $4.4/M tokens | $0.36/M tokens |
| Context window | — | 524K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Apr 2025 | Aug 2026 |
Not enough votes to call it. On the specs, Solar Pro 4 has the edge: bigger model tier, newer, bigger context window.
Solar Pro 4 costs 12x less per token.
Solar Pro 4 is cheaper on both: 12× input, 12× output.
Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.