gemini-2.5-pro vs gpt-5.5 Benchmark Comparison
Direct benchmark comparison between gemini-2.5-pro and gpt-5.5 based on LMArena Elo and the latest 2026 API pricing.
Direct Technical & Pricing Comparison
| Frontier Model |
LMArena Elo |
API Cost (1M) |
Throughput |
| gemini-2.5-pro |
1446 |
$0.00000125 |
111 |
| gpt-5.5 |
1477 |
$0.00000125 |
81 |
*These models represent the Pareto Frontier (optimal cost-to-performance).*
Comparison Summary: gpt-5.5 is the more capable model in this pair, leading by 31 Elo points. However, neither model is currently Pareto-optimal. Developers looking for peak efficiency should investigate hy4-preview, which offers a superior benchmark-to-price ratio.