OpenAIGPT-5 miniVSxAIGrok 4.20
Our Take
We recommend Grok 4.20 if you need peak intelligence for reasoning and coding tasks, or the 4.4x cheaper GPT-5 mini to optimize your budget for high-volume pipelines. While Grok 4.20 holds a clear performance lead, it carries a heavy price premium. Choose Grok 4.20 for complex logic, or GPT-5 mini for budget efficiency.
▶WHY?
Benchmark Calculations & Evidence:
Coding Benchmarks: Both models were evaluated on the SWE-bench Pro benchmark. Grok 4.20 scored 51.8%, while GPT-5 mini scored 45.7%.
Reasoning Benchmarks: Both models were evaluated on the GPQA Diamond benchmark. Grok 4.20 scored 90%, while GPT-5 mini scored 81.6%.
Cost Efficiency: GPT-5 mini pricing ($0.25/M input, $2/M output) is 4.4x cheaper than Grok 4.20 ($2/M input, $6/M output).
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Benchmarks & Scores
Coding (swe-bench-pro)
45.7%complex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)
81.6%graduate-level science QA
Cost & Context
Cost (per 1M tokens)4.4x cheaper
$0.69Input: $0.25 | Output: $2.00Context Window
400k tokensBenchmarks & Scores
Coding (swe-bench-pro)Winner (+6.1%)
51.8%complex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)Winner (+8.4%)
90%graduate-level science QA
Cost & Context
Cost (per 1M tokens)
$3.00Input: $2.00 | Output: $6.00Context WindowLarger
1.05M tokensFrequently Asked Questions about GPT-5 mini vs Grok 4.20
GPT-5 mini is cheaper than Grok 4.20. GPT-5 mini has a blended cost of $0.69/1M tokens, which is about 4.4x cheaper than Grok 4.20 at $3.00/1M tokens.
Grok 4.20 is better for coding tasks on this benchmark. It scores 51.8% on swe-bench-pro (complex codebases, multi-file repositories, and architectural planning) compared to GPT-5 mini which scores 45.7%.
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