GPT-5.5 Pro vs Gemini 2.5 Pro
30-second takeaway
- Gemini 2.5 Pro has the cheaper input: $1.25 vs $30 (per 1M tokens, 96% less)
- GPT-5.5 Pro has the larger context: 1.05M vs 1.049M tokens
| GPT-5.5 Pro OpenAI | Gemini 2.5 Pro Google | |
|---|---|---|
| Input | $30 | $1.25 |
| Output | $180 | $10 |
| Context | 1.05M | 1.049M |
More specs (max output / capabilities)
| max output | 128,000 | 65,536 |
| Reasoning | ✓ Yes | ✓ Yes |
| Tool calls | ✓ Yes | ✓ Yes |
| Open weights | — No | — No |
Prices are official/data-source rates (per 1M tokens), not what relays actually charge — relay prices vary with discounts and group multipliers. See methodology.