OpenAI o4-mini vs Gemini 2.5 Pro

Performance benchmarks + pricing comparison — updated April 2026

OpenAI o4-mini

OpenAI

Updated mini reasoning model. Similar pricing to o3-mini with updated capabilities.

Input$1.10/M
Output$4.40/M
Context200K tokens
Best ForGeneral reasoning, coding tasks
Benchmark72/100

Gemini 2.5 Pro

Google

Google's most capable model. Strong coding, multimodal understanding, and very competitive pricing.

Input$1.25/M
Output$10.00/M
Context1M tokens
Best ForLong document analysis, coding, multimodal tasks

Cost Comparison by Scenario

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

ScenarioOpenAI o4-miniGemini 2.5 ProSavings
Small Script (1K lines) $0.17 $0.34 OpenAI o4-mini saves $0.17 (50%)
Medium Feature (10K lines) $1.27 $2.44 OpenAI o4-mini saves $1.17 (48%)
Large Project (50K lines) $6.33 $12.19 OpenAI o4-mini saves $5.86 (48%)
Code Review (5K lines) $0.30 $0.47 OpenAI o4-mini saves $0.17 (35%)

Verdict

OpenAI o4-mini wins on both price and performance — $1.10/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