OpenAIGPT-5.4 miniVSxAIGrok 4.20
Our Take
We recommend GPT-5.4 mini for a 1.8x API cost saving and superior coding capability, or Grok 4.20 if your workflow requires peak reasoning. While GPT-5.4 mini is more cost-effective, Grok 4.20 holds a clear reasoning advantage. Choose GPT-5.4 mini for code generation, or Grok 4.20 for complex logical reasoning.
▶WHY?
Benchmark Calculations & Evidence:
Coding Benchmarks: Both models were evaluated on the SWE-bench Pro benchmark. GPT-5.4 mini scored 54.4%, while Grok 4.20 scored 51.8%.
Reasoning Benchmarks: Both models were evaluated on the GPQA Diamond benchmark. GPT-5.4 mini scored 87.5%, while Grok 4.20 scored 90%.
Cost Efficiency: Grok 4.20 pricing ($2/M input, $6/M output) is 1.8x cheaper than GPT-5.4 mini ($0.75/M input, $4.5/M output).
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Benchmarks & Scores
Coding (swe-bench-pro)Winner (+2.6%)
54.4%complex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)
87.5%graduate-level science QA
Cost & Context
Cost (per 1M tokens)1.8x cheaper
$1.69Input: $0.75 | Output: $4.50Context Window
400k tokensBenchmarks & Scores
Coding (swe-bench-pro)
51.8%complex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)Winner (+2.5%)
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-5.4 mini vs Grok 4.20
GPT-5.4 mini is cheaper than Grok 4.20. GPT-5.4 mini has a blended cost of $1.69/1M tokens, which is about 1.8x cheaper than Grok 4.20 at $3.00/1M tokens.
GPT-5.4 mini is better for coding tasks on this benchmark. It scores 54.4% on swe-bench-pro (complex codebases, multi-file repositories, and architectural planning) compared to Grok 4.20 which scores 51.8%.
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