Gemini 2.5 Pro (I/O Edition) is cheaper than Claude Sonnet 3.6 (2022-10-22) at $1.25/M vs $3/M input tokens.
| Spec | Claude Sonnet 3.6 (2022-10-22) | Gemini 2.5 Pro (I/O Edition) |
|---|---|---|
| Input price | $3/M tokens | $1.25/M tokens |
| Output price | $15/M tokens | $10/M tokens |
| Context window | 200K tokens | — |
| Parameters | Not disclosed | Not disclosed |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | Jun 2024 | May 2025 |
Not enough votes to call it. On the specs, Gemini 2.5 Pro (I/O Edition) has the edge: bigger model tier, newer.
Reviewing agent-written code?See a Brief PR report
Gemini 2.5 Pro (I/O Edition) is cheaper on both: 2.4× input, 1.5× output.
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 13 Sep 2026.
Gemini 2.5 Pro (I/O Edition) uses 21.4x more bold