GPT-4 Turbo vs Gemini 2.5 Flash

Performance benchmarks + pricing comparison — updated April 2026

GPT-4 Turbo

OpenAI

Previous generation high-performance model. Good for complex reasoning tasks.

Input$10.00/M
Output$30.00/M
Context128K tokens
Best ForComplex reasoning, data extraction, analysis
Benchmark70/100

Gemini 2.5 Flash

Google

Google's latest Flash model with improved reasoning. Excellent price-performance for multimodal tasks.

Input$0.150/M
Output$0.600/M
Context1M tokens
Best ForMultimodal tasks, video analysis, image understanding

Cost Comparison by Scenario

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

ScenarioGPT-4 TurboGemini 2.5 FlashSavings
Small Script (1K lines) $1.25 $0.02 Gemini 2.5 Flash saves $1.23 (98%)
Medium Feature (10K lines) $9.50 $0.17 Gemini 2.5 Flash saves $9.33 (98%)
Large Project (50K lines) $47.50 $0.86 Gemini 2.5 Flash saves $46.64 (98%)
Code Review (5K lines) $2.50 $0.04 Gemini 2.5 Flash saves $2.46 (98%)

Verdict

Gemini 2.5 Flash wins on both price and performance — $0.150/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