gemini-3.5-flash vs gpt-5.4 Benchmark Comparison
Direct benchmark comparison between gemini-3.5-flash and gpt-5.4 based on LMArena Elo and the latest 2026 API pricing.
Direct Technical & Pricing Comparison
| Frontier Model |
LMArena Elo |
API Cost (1M) |
Throughput |
| gemini-3.5-flash |
1480 |
$0.0000015 |
118 |
| gpt-5.4 |
1467 |
$0.0000025 |
48 |
*These models represent the Pareto Frontier (optimal cost-to-performance).*
Comparison Summary: These models are highly competitive, with a negligible Elo gap of only 13 points. The choice between them should be driven by specific API features or provider preference. Specifically, gemini-3.5-flash is currently on the Pareto line, suggesting it offers better systemic value for its performance tier.