GPT-4 vs Gemini 1.5 Pro

Performance benchmarks + pricing comparison — updated April 2026

GPT-4

OpenAI

Original GPT-4. Most expensive OpenAI model, largely superseded by newer options.

Input$30.00/M
Output$60.00/M
Context8K tokens
Best ForLegacy applications requiring GPT-4 specifically
Benchmark68/100

Gemini 1.5 Pro

Google

Previous generation Google pro model. Good for general tasks.

Input$1.25/M
Output$5.00/M
Context1M tokens
Best ForGeneral-purpose tasks, document analysis

Cost Comparison by Scenario

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

ScenarioGPT-4Gemini 1.5 ProSavings
Small Script (1K lines) $2.85 $0.19 Gemini 1.5 Pro saves $2.66 (93%)
Medium Feature (10K lines) $22.50 $1.44 Gemini 1.5 Pro saves $21.06 (94%)
Large Project (50K lines) $112.50 $7.19 Gemini 1.5 Pro saves $105.31 (94%)
Code Review (5K lines) $6.75 $0.34 Gemini 1.5 Pro saves $6.41 (95%)

Verdict

Gemini 1.5 Pro wins on both price and performance — $1.25/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