GPT-3.5 Turbo vs Gemini 2.0 Flash

Performance benchmarks + pricing comparison — updated April 2026

GPT-3.5 Turbo

OpenAI

Budget model for simple tasks. Being phased out but still widely used.

Input$0.500/M
Output$1.50/M
Context16K tokens
Best ForSimple chatbots, basic text generation
Benchmark40/100

Gemini 2.0 Flash

Google

Cheapest Google model. Fast responses for simple coding tasks.

Input$0.100/M
Output$0.400/M
Context1M tokens
Best ForSimple tasks, fast responses, cost optimization

Cost Comparison by Scenario

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

ScenarioGPT-3.5 TurboGemini 2.0 FlashSavings
Small Script (1K lines) $0.06 $0.02 Gemini 2.0 Flash saves $0.05 (75%)
Medium Feature (10K lines) $0.48 $0.12 Gemini 2.0 Flash saves $0.36 (76%)
Large Project (50K lines) $2.38 $0.58 Gemini 2.0 Flash saves $1.80 (76%)
Code Review (5K lines) $0.13 $0.03 Gemini 2.0 Flash saves $0.10 (78%)

Verdict

Gemini 2.0 Flash wins on both price and performance — $0.100/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