GPT-4o mini vs Grok 4

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

Grok 4

xAI

Next-generation xAI model with enhanced reasoning and coding capability. Competes with Claude Opus and o3 Pro tier.

Input$5.00/M
Output$25.00/M
Context256K tokens
Best ForComplex reasoning, advanced coding, enterprise applications

Cost Comparison by Scenario

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

ScenarioGPT-4o miniGrok 4Savings
Small Script (1K lines) $0.02 $0.93 GPT-4o mini saves $0.90 (97%)
Medium Feature (10K lines) $0.18 $6.75 GPT-4o mini saves $6.57 (97%)
Large Project (50K lines) $0.92 $33.75 GPT-4o mini saves $32.83 (97%)
Code Review (5K lines) $0.05 $1.50 GPT-4o mini saves $1.45 (97%)

Verdict

GPT-4o mini 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