Gemini 2.0 Flash Thinking is cheaper than OpenAI o3 at $0.25/M vs $10/M input tokens.
| Spec | Gemini 2.0 Flash Thinking | OpenAI o3 |
|---|---|---|
| Input price | $0.25/M tokens | $10/M tokens |
| Output price | $0.5/M tokens | $40/M tokens |
| Context window | 500K tokens | — |
| Parameters | Not disclosed | Not disclosed |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | Dec 2024 | Apr 2025 |
Not enough votes to call it. On the specs, OpenAI o3 has the edge: bigger model tier, newer.
Gemini 2.0 Flash Thinking costs 80x less per token.
Reviewing agent-written code?See a Brief PR report
Gemini 2.0 Flash Thinking is cheaper on both: 40× input, 80× output.
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
OpenAI o3 uses 9.5x more headings