GPT-4o mini vs Gemini 1.5 Flash

Performance benchmarks + pricing comparison — updated April 2026

GPT-4o mini

OpenAI

Affordable small model. Fast and cost-effective for high-volume coding tasks.

Input$0.150/M
Output$0.600/M
Context128K tokens
Best ForHigh-volume tasks, simple coding, cost-sensitive projects
Benchmark58/100

Gemini 1.5 Flash

Google

Cheapest Gemini model. Good for high-volume, simple tasks.

Input$0.075/M
Output$0.300/M
Context1M tokens
Best ForHigh-volume simple tasks, cost optimization

Cost Comparison by Scenario

Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.

ScenarioGPT-4o miniGemini 1.5 FlashSavings
Small Script (1K lines) $0.02 $0.01 Gemini 1.5 Flash saves $0.01 (52%)
Medium Feature (10K lines) $0.18 $0.09 Gemini 1.5 Flash saves $0.10 (53%)
Large Project (50K lines) $0.92 $0.43 Gemini 1.5 Flash saves $0.49 (53%)
Code Review (5K lines) $0.05 $0.02 Gemini 1.5 Flash saves $0.03 (56%)

Verdict

Gemini 1.5 Flash wins on both price and performance — $0.075/M input with a benchmark score of N/A/100.

For most developers, this is the clear choice between these two models.

Compare with Other Models