Gemini 2.5 Flash Preview is cheaper than OpenAI o4-mini at $0.15/M vs $1.1/M input tokens.
| Spec | Gemini 2.5 Flash Preview | OpenAI o4-mini |
|---|---|---|
| Input price | $0.15/M tokens | $1.1/M tokens |
| Output price | $0.6/M tokens | $4.4/M tokens |
| Context window | 1.0M tokens | — |
| Parameters | Not disclosed | Not disclosed |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | Apr 2025 | Apr 2025 |
| SWE-bench Verified | 60.4% | 68.1% |
Not enough votes to call it. On the specs, nothing separates them.
Gemini 2.5 Flash Preview costs 7.3x less per token.
Gemini 2.5 Flash Preview is cheaper on both: 7.3× input, 7.3× output.
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 8 Sep 2026.
Gemini 2.5 Flash Preview uses 407.5x more bold